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Cloudera Enterprise 6.0.x | Other versions

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  • Getting Started
    • Cloudera Personas
    • Updating an existing CDH/Cloudera Manager deployment to access downloads with authentication
    • Planning a New Cloudera Enterprise Deployment
    • CDH Overview
      • Hive Overview
      • Apache Impala Overview
      • Apache Kudu Overview
      • Apache Sentry Overview
      • Apache Spark Overview
      • External Documentation
    • Cloudera Manager Overview
      • Overview of Cloudera Manager Software Management
        • Parcels
    • Cloudera Navigator Data Management
      • Getting Started with Cloudera Navigator
      • Cloudera Navigator Frequently Asked Questions
    • Cloudera Navigator Encryption
      • Cloudera Navigator Key Trustee Server Overview
      • Cloudera Navigator Key HSM Overview
      • Cloudera Navigator HSM KMS Overview
      • Cloudera Navigator Encrypt Overview
    • Cloudera Navigator Optimizer
    • Proof-of-Concept Installation Guide
      • Before You Begin
      • Installing a Proof-of-Concept Cluster
        • Step 1: Run the Cloudera Manager Installer
        • Step 2: Install CDH Using the Wizard
        • Step 3: Set Up a Cluster
      • Managing the Embedded Database
      • Migrating Embedded PostgreSQL Database
    • Getting Support
    • Frequently Asked Questions About Cloudera Software
  • Release Notes
  • Requirements and Supported Versions
  • Installation
    • Before You Install
      • Storage Space Planning for Cloudera Manager
      • Configure Network Names
      • Disabling the Firewall
      • Setting SELinux mode
      • Enable an NTP Service
      • Install Python 2.7 on Hue Hosts
      • Impala Requirements
      • Required Privileges
      • Ports
        • Ports Used by Cloudera Manager and Cloudera Navigator
        • Ports Used by Cloudera Navigator Encryption
        • Ports Used by CDH Components
        • Ports Used by DistCp
        • Ports Used by Third-Party Components
      • Recommended Role Distribution
      • Custom Installation Solutions
        • Using an Internal Parcel Repository
        • Using an Internal Package Repository
        • Manually Install Cloudera Software Packages
        • Creating Virtual Images of Cluster Hosts
        • Configuring a Custom Java Home Location
        • Creating a CDH Cluster Using a Cloudera Manager Template
    • Installing Cloudera Manager and CDH
      • Step 1: Configure a Repository
      • Step 2: Install JDK
      • Step 3: Install Cloudera Manager Server
      • Step 4: Install Databases
        • Install and Configure MariaDB
        • Install and Configure MySQL
        • Install and Configure PostgreSQL
        • Install and Configure Oracle Database
      • Step 5: Set up the Cloudera Manager Database
      • Step 6: Install CDH and Other Software
      • Step 7: Set Up a Cluster
    • Installing Navigator Data Management
    • Installing Navigator Encryption
      • Installing Cloudera Navigator Key Trustee Server
      • Installing Cloudera Navigator Key HSM
      • Installing Key Trustee KMS
      • Installing Navigator HSM KMS Backed by Thales HSM
      • Installing Navigator HSM KMS Backed by Luna HSM
      • Installing Cloudera Navigator Encrypt
    • After Installation
      • Deploying Clients
      • Testing the Installation
      • Installing the GPL Extras Parcel
      • Migrating from Packages to Parcels
      • Migrating from Parcels to Packages
      • Secure Your Cluster
    • Troubleshooting Installation Problems
    • Uninstalling Cloudera Software
      • Uninstalling a CDH Component From a Single Host
  • Upgrade Guide
  • Cluster Management
    • Cloudera Manager
      • Cloudera Manager Admin Console
        • Cloudera Manager Admin Console Home Page
        • Displaying Cloudera Manager Documentation
        • Automatic Logout
      • Cloudera Manager Frequently Asked Questions
      • Cloudera Manager API
        • Using the Cloudera Manager API for Cluster Automation
      • Cloudera Manager Administration
        • Starting, Stopping, and Restarting the Cloudera Manager Server
        • Configuring Cloudera Manager Server Ports
        • Moving the Cloudera Manager Server to a New Host
        • Managing the Cloudera Manager Server Log
        • Cloudera Manager Agents
          • Starting, Stopping, and Restarting Cloudera Manager Agents
          • Configuring Cloudera Manager Agents
          • Managing Cloudera Manager Agent Logs
        • Configuring Network Settings
        • Managing Licenses
        • Sending Usage and Diagnostic Data to Cloudera
        • Exporting and Importing Cloudera Manager Configuration
        • Backing Up Cloudera Manager
        • Other Cloudera Manager Tasks and Settings
        • Cloudera Management Service
      • Extending Cloudera Manager
    • Cluster Configuration Overview
      • Modifying Configuration Properties Using Cloudera Manager
      • Autoconfiguration
      • Custom Configuration
      • Stale Configurations
      • Client Configuration Files
      • Viewing and Reverting Configuration Changes
      • Exporting and Importing Cloudera Manager Configuration
      • Cloudera Manager Configuration Properties Reference
    • Managing Clusters
      • Adding and Deleting Clusters
      • Starting, Stopping, Refreshing, and Restarting a Cluster
      • Pausing a Cluster in AWS
      • Renaming a Cluster
      • Cluster-Wide Configuration
      • Managing Services
        • Managing the HBase Service
        • Managing HDFS
          • Data Durability
            • Enabling Erasure Coding
          • NameNodes
            • Backing Up and Restoring HDFS Metadata
            • Moving NameNode Roles
            • Sizing NameNode Heap Memory
            • Backing Up and Restoring NameNode Metadata
          • DataNodes
            • Configuring Storage Directories for DataNodes
            • Configuring Storage Balancing for DataNodes
            • Performing Disk Hot Swap for DataNodes
          • JournalNodes
          • Configuring Short-Circuit Reads
          • Configuring HDFS Trash
          • HDFS Balancers
          • Enabling WebHDFS
          • Adding HttpFS
          • Adding and Configuring an NFS Gateway
          • Setting HDFS Quotas
          • Configuring Mountable HDFS
          • Configuring Centralized Cache Management in HDFS
          • Configuring Proxy Users to Access HDFS
          • Using CDH with Isilon Storage
          • Configuring Heterogeneous Storage in HDFS
        • Managing Hive
        • Managing Hue
          • Adding a Hue Service and Role Instance
          • Managing Hue Analytics Data Collection
          • Enabling Hue Applications Using Cloudera Manager
        • Managing Impala
          • The Impala Service
          • Modifying Impala Startup Options
          • Post-Installation Configuration for Impala
          • Configuring Impala to Work with ODBC
          • Configuring Impala to Work with JDBC
        • Managing Key-Value Store Indexer
        • Kudu
        • Managing Oozie
        • Managing Solr
        • Managing Spark
          • Managing Spark Using Cloudera Manager
          • Managing the Spark History Server
        • Managing the Sqoop 1 Client
        • Managing YARN (MRv2) and MapReduce (MRv1)
          • Managing YARN
          • Managing YARN ACLs
          • Managing MapReduce
        • Managing ZooKeeper
        • Configuring Services to Use the GPL Extras Parcel
    • Managing Hosts
      • Viewing Host Details
      • Using the Host Inspector
      • Adding a Host to the Cluster
      • Specifying Racks for Hosts
      • Host Templates
      • Performing Maintenance on a Cluster Host
        • Tuning and Troubleshooting Host Decommissioning
        • Maintenance Mode
      • Changing Hostnames
      • Deleting Hosts
      • Moving a Host Between Clusters
    • Managing Services
      • Adding a Service
      • Comparing Configurations for a Service Between Clusters
      • Add-on Services
      • Starting, Stopping, and Restarting Services
      • Rolling Restart
      • Aborting a Pending Command
      • Deleting Services
      • Renaming a Service
      • Configuring Maximum File Descriptors
      • Exposing Hadoop Metrics to Graphite
      • Exposing Hadoop Metrics to Ganglia
    • Managing Roles
      • Role Instances
      • Role Groups
    • Monitoring and Diagnostics
      • Introduction to Cloudera Manager Monitoring
        • Time Line
        • Health Tests
        • Cloudera Manager Admin Console Home Page
        • Viewing Charts for Cluster, Service, Role, and Host Instances
        • Configuring Monitoring Settings
      • Monitoring Clusters
      • Monitoring Services
        • Monitoring Service Status
        • Viewing Service Status
        • Viewing Service Instance Details
        • Viewing Role Instance Status
          • The Processes Tab
        • Running Diagnostic Commands for Roles
        • Periodic Stacks Collection
        • Viewing Running and Recent Commands
        • Monitoring Resource Management
      • Monitoring Hosts
        • Host Details
        • Host Inspector
      • Monitoring Activities
        • Monitoring MapReduce Jobs
          • Viewing and Filtering MapReduce Activities
          • Viewing the Jobs in a Pig, Oozie, or Hive Activity
          • Task Attempts
          • Viewing Activity Details in a Report Format
          • Comparing Similar Activities
          • Viewing the Distribution of Task Attempts
        • Monitoring Impala Queries
          • Query Details
        • Monitoring YARN Applications
        • Monitoring Spark Applications
      • Events
      • Alerts
        • Managing Alerts
          • Configuring Alert Email Delivery
          • Configuring Alert SNMP Delivery
          • Configuring Custom Alert Scripts
      • Triggers
        • Cloudera Manager Trigger Use Cases
      • Lifecycle and Security Auditing
      • Charting Time-Series Data
        • Dashboards
        • tsquery Language
        • Metric Aggregation
      • Logs
        • Viewing the Cloudera Manager Server Log
        • Viewing the Cloudera Manager Agent Logs
        • Managing Disk Space for Log Files
      • Reports
        • Directory Usage Report
        • Disk Usage Reports
        • Activity, Application, and Query Reports
        • The File Browser
        • Downloading HDFS Directory Access Permission Reports
      • Troubleshooting Cluster Configuration and Operation
      • Monitoring Reference
        • Cloudera Manager Entity Types
        • Cloudera Manager Entity Type Attributes
        • Cloudera Manager Events
          • SYSTEM Category
          • HEALTH_CHECK Category
          • AUDIT_EVENT Category
          • ACTIVITY_EVENT Category
          • LOG_MESSAGE Category
          • HBASE Category
        • Cloudera Manager Health Tests
          • Active Database Health Tests
          • Active Key Trustee Server Health Tests
          • Activity Monitor Health Tests
          • Alert Publisher Health Tests
          • Beeswax Server Health Tests
          • Cloudera Management Service Health Tests
          • DataNode Health Tests
          • DSSD DataNode Health Tests
          • Event Server Health Tests
          • Failover Controller Health Tests
          • Flume Health Tests
          • Flume Agent Health Tests
          • Garbage Collector Health Tests
          • HBase Health Tests
          • HBase REST Server Health Tests
          • HBase Thrift Server Health Tests
          • HDFS Health Tests
          • History Server Health Tests
          • Hive Health Tests
          • Hive Metastore Server Health Tests
          • HiveServer2 Health Tests
          • Host Health Tests
          • Host Monitor Health Tests
          • HttpFS Health Tests
          • Hue Health Tests
          • Hue Server Health Tests
          • Impala Health Tests
          • Impala Catalog Server Health Tests
          • Impala Daemon Health Tests
          • Impala Llama ApplicationMaster Health Tests
          • Impala StateStore Health Tests
          • JobHistory Server Health Tests
          • JobTracker Health Tests
          • JournalNode Health Tests
          • Kafka Health Tests
          • Kafka Broker Health Tests
          • Kafka MirrorMaker Health Tests
          • Kerberos Ticket Renewer Health Tests
          • Key Management Server Health Tests
          • Key Management Server Proxy Health Tests
          • Key-Value Store Indexer Health Tests
          • Lily HBase Indexer Health Tests
          • Load Balancer Health Tests
          • Logger Health Tests
          • MapReduce Health Tests
          • Master Health Tests
          • Monitor Health Tests
          • NFS Gateway Health Tests
          • NameNode Health Tests
          • Navigator Audit Server Health Tests
          • Navigator HSM KMS Metastore Health Tests
          • Navigator HSM KMS Proxy Health Tests
          • Navigator Luna KMS Metastore Health Tests
          • Navigator Luna KMS Proxy Health Tests
          • Navigator Metadata Server Health Tests
          • Navigator Thales KMS Metastore Health Tests
          • Navigator Thales KMS Proxy Health Tests
          • NodeManager Health Tests
          • Oozie Health Tests
          • Oozie Server Health Tests
          • Passive Database Health Tests
          • Passive Key Trustee Server Health Tests
          • RegionServer Health Tests
          • Reports Manager Health Tests
          • ResourceManager Health Tests
          • SecondaryNameNode Health Tests
          • Sentry Health Tests
          • Sentry Server Health Tests
          • Service Monitor Health Tests
          • Solr Health Tests
          • Solr Server Health Tests
          • Spark Health Tests
          • Spark (Standalone) Health Tests
          • Spark 2 Health Tests
          • Tablet Server Health Tests
          • TaskTracker Health Tests
          • Telemetry Publisher Health Tests
          • Tracer Health Tests
          • WebHCat Server Health Tests
          • Worker Health Tests
          • YARN (MR2 Included) Health Tests
          • ZooKeeper Health Tests
          • ZooKeeper Server Health Tests
        • Cloudera Manager Metrics
          • Accumulo Metrics
          • Active Database Metrics
          • Active Key Trustee Server Metrics
          • Activity Metrics
          • Activity Monitor Metrics
          • Agent Metrics
          • Alert Publisher Metrics
          • Attempt Metrics
          • Cloudera Management Service Metrics
          • Cloudera Manager Server Metrics
          • Cluster Metrics
          • DataNode Metrics
          • Directory Metrics
          • Disk Metrics
          • Event Server Metrics
          • Failover Controller Metrics
          • Filesystem Metrics
          • Flume Metrics
          • Flume Channel Metrics
          • Flume Sink Metrics
          • Flume Source Metrics
          • Garbage Collector Metrics
          • HBase Metrics
          • HBase REST Server Metrics
          • HBase RegionServer Replication Peer Metrics
          • HBase Thrift Server Metrics
          • HDFS Metrics
          • HDFS Cache Directive Metrics
          • HDFS Cache Pool Metrics
          • HRegion Metrics
          • HTable Metrics
          • History Server Metrics
          • Hive Metrics
          • Hive Metastore Server Metrics
          • HiveServer2 Metrics
          • Host Metrics
          • Host Monitor Metrics
          • HttpFS Metrics
          • Hue Metrics
          • Hue Server Metrics
          • Impala Metrics
          • Impala Catalog Server Metrics
          • Impala Daemon Metrics
          • Impala Daemon Resource Pool Metrics
          • Impala Llama ApplicationMaster Metrics
          • Impala Pool Metrics
          • Impala Pool User Metrics
          • Impala Query Metrics
          • Impala StateStore Metrics
          • Isilon Metrics
          • Java KeyStore KMS Metrics
          • JobHistory Server Metrics
          • JobTracker Metrics
          • JournalNode Metrics
          • Kafka Metrics
          • Kafka Broker Metrics
          • Kafka Broker Topic Metrics
          • Kafka MirrorMaker Metrics
          • Kafka Replica Metrics
          • Kerberos Ticket Renewer Metrics
          • Key Management Server Metrics
          • Key Management Server Proxy Metrics
          • Key Trustee KMS Metrics
          • Key Trustee Server Metrics
          • Key-Value Store Indexer Metrics
          • Kudu Metrics
          • Kudu Replica Metrics
          • Lily HBase Indexer Metrics
          • Load Balancer Metrics
          • MapReduce Metrics
          • Master Metrics
          • Monitor Metrics
          • NFS Gateway Metrics
          • NameNode Metrics
          • Navigator Audit Server Metrics
          • Navigator HSM KMS backed by SafeNet Luna HSM Metrics
          • Navigator HSM KMS backed by Thales HSM Metrics
          • Navigator Luna KMS Metastore Metrics
          • Navigator Luna KMS Proxy Metrics
          • Navigator Metadata Server Metrics
          • Navigator Thales KMS Metastore Metrics
          • Navigator Thales KMS Proxy Metrics
          • Network Interface Metrics
          • NodeManager Metrics
          • Oozie Metrics
          • Oozie Server Metrics
          • Passive Database Metrics
          • Passive Key Trustee Server Metrics
          • RegionServer Metrics
          • Reports Manager Metrics
          • ResourceManager Metrics
          • SecondaryNameNode Metrics
          • Sentry Metrics
          • Sentry Server Metrics
          • Server Metrics
          • Service Monitor Metrics
          • Solr Metrics
          • Solr Replica Metrics
          • Solr Server Metrics
          • Solr Shard Metrics
          • Spark Metrics
          • Spark (Standalone) Metrics
          • Sqoop 1 Client Metrics
          • Tablet Server Metrics
          • TaskTracker Metrics
          • Telemetry Publisher Metrics
          • Time Series Table Metrics
          • Tracer Metrics
          • User Metrics
          • WebHCat Server Metrics
          • Worker Metrics
          • YARN (MR2 Included) Metrics
          • YARN Pool Metrics
          • YARN Pool User Metrics
          • ZooKeeper Metrics
          • Disabling Metrics for Specific Roles
    • Performance Management
      • Optimizing Performance in CDH
      • Choosing and Configuring Data Compression
      • Tuning the Solr Server
      • Tuning Spark Applications
      • Tuning YARN
    • Resource Management
      • Static Service Pools
        • Linux Control Groups (cgroups)
      • Dynamic Resource Pools
      • YARN (MRv2) and MapReduce (MRv1) Schedulers
        • Configuring the Fair Scheduler
        • Enabling and Disabling Fair Scheduler Preemption
      • Resource Management for Impala
        • Admission Control and Query Queuing
        • Managing Impala Admission Control
      • Data Storage for Monitoring Data
      • Cluster Utilization Reports
        • Creating a Custom Cluster Utilization Report
    • High Availability
      • HDFS High Availability
        • Introduction to HDFS High Availability
        • Configuring Hardware for HDFS HA
        • Enabling HDFS HA
        • Disabling and Redeploying HDFS HA
        • Configuring Other CDH Components to Use HDFS HA
        • Administering an HDFS High Availability Cluster
        • Changing a Nameservice Name for Highly Available HDFS Using Cloudera Manager
      • MapReduce (MRv1) and YARN (MRv2) High Availability
        • YARN (MRv2) ResourceManager High Availability
        • Work Preserving Recovery for YARN Components
        • MapReduce (MRv1) JobTracker High Availability
      • Cloudera Navigator Key Trustee Server High Availability
      • Enabling Key Trustee KMS High Availability
      • Enabling Navigator HSM KMS High Availability
      • High Availability for Other CDH Components
        • HBase High Availability
          • HBase Read Replicas
        • Oozie High Availability
        • Search High Availability
      • Navigator Data Management in a High Availability Environment
      • Configuring Cloudera Manager for High Availability With a Load Balancer
        • Introduction to Cloudera Manager Deployment Architecture
        • Prerequisites for Setting up Cloudera Manager High Availability
        • Cloudera Manager Failover Protection
        • High-Level Steps to Configure Cloudera Manager High Availability
          • Step 1: Setting Up Hosts and the Load Balancer
          • Step 2: Installing and Configuring Cloudera Manager Server for High Availability
          • Step 3: Installing and Configuring Cloudera Management Service for High Availability
          • Step 4: Automating Failover with Corosync and Pacemaker
        • Database High Availability Configuration
        • TLS and Kerberos Configuration for Cloudera Manager High Availability
    • Backup and Disaster Recovery
      • Port Requirements for Backup and Disaster Recovery
      • Data Replication
        • Designating a Replication Source
        • HDFS Replication
          • Monitoring the Performance of HDFS Replications
        • Hive/Impala Replication
          • Monitoring the Performance of Hive/Impala Replications
        • Replicating Data to Impala Clusters
        • Using Snapshots with Replication
        • Enabling Replication Between Clusters with Kerberos Authentication
        • Replication of Encrypted Data
        • HBase Replication
      • Snapshots
        • Cloudera Manager Snapshot Policies
        • Managing HBase Snapshots
        • Managing HDFS Snapshots
      • BDR Tutorials
        • How To Back Up and Restore Apache Hive Data Using Cloudera Enterprise BDR
        • How To Back Up and Restore HDFS Data Using Cloudera Enterprise BDR
        • BDR Automation Examples
      • Migrating Data between Clusters Using distcp
        • Copying Cluster Data Using DistCp
        • Copying Data between a Secure and an Insecure Cluster using DistCp and WebHDFS
        • Post-migration Verification
    • Backing Up Databases
    • Cloudera Navigator Administration
    • Accessing Storage Using Amazon S3
      • Configuring the Amazon S3 Connector
        • Using S3 Credentials with YARN, MapReduce, or Spark
      • Using Fast Upload with Amazon S3
      • Configuring and Managing S3Guard
      • How to Configure a MapReduce Job to Access S3 with an HDFS Credstore
    • Accessing Storage Using Microsoft ADLS
      • Configuring ADLS Access Using Cloudera Manager
      • Configuring ADLS Connectivity
    • How To Create a Multitenant Enterprise Data Hub
  • Security
    • Cloudera Security Overview
      • Authentication Overview
      • Encryption Overview
        • Encryption Mechanisms
      • Authorization Overview
      • Auditing and Data Governance
    • Authentication
      • Kerberos Security Artifacts Overview
      • Configuring Authentication in Cloudera Manager
        • Cloudera Manager User Accounts
        • Configuring External Authentication and Authorization for Cloudera Manager
        • Enabling Kerberos Authentication for CDH
          • Step 1: Install Cloudera Manager and CDH
          • Step 2: Installing JCE Policy File for AES-256 Encryption
          • Step 3: Create the Kerberos Principal for Cloudera Manager Server
          • Step 4: Enabling Kerberos Using the Wizard
          • Step 5: Create the HDFS Superuser
          • Step 6: Get or Create a Kerberos Principal for Each User Account
          • Step 7: Prepare the Cluster for Each User
          • Step 8: Verify that Kerberos Security is Working
          • Step 9: (Optional) Enable Authentication for HTTP Web Consoles for Hadoop Roles
        • Kerberos Authentication for Non-Default Users
        • Customizing Kerberos Principals
        • Managing Kerberos Credentials Using Cloudera Manager
        • Using a Custom Kerberos Keytab Retrieval Script
        • Adding Trusted Realms to the Cluster
        • Using Auth-to-Local Rules to Isolate Cluster Users
      • Configuring Authentication for Cloudera Navigator
        • Cloudera Navigator and External Authentication
          • Configuring Cloudera Navigator for Active Directory
          • Configuring Cloudera Navigator for LDAP
          • Configuring Cloudera Navigator for SAML
        • Configuring Groups for Cloudera Navigator
      • Configuring Authentication for Other Components
        • Flume Authentication
          • Configuring Kerberos for Flume Thrift Source and Sink Using Cloudera Manager
          • Writing to a Secure HBase Cluster
          • Using Substitution Variables with Flume for Kerberos Artifacts
        • HBase Authentication
          • Configuring Kerberos Authentication for HBase
          • Configuring Secure HBase Replication
          • Configuring the HBase Client TGT Renewal Period
        • Hive Authentication
          • HiveServer2 Security Configuration
          • Using Hive to Run Queries on a Secure HBase Server
        • HttpFS Authentication
        • Hue Authentication
          • Enable Hue to Use Kerberos for Authentication
        • Impala Authentication
          • Enabling Kerberos Authentication for Impala
          • Enabling LDAP Authentication for Impala
          • Using Multiple Authentication Methods with Impala
          • Configuring Impala Delegation for Hue and BI Tools
        • Cloudera Search Authentication
          • Using Kerberos with Cloudera Search
        • Spark Authentication
        • Sqoop1 Authentication
        • ZooKeeper Authentication
      • Configuring a Dedicated MIT KDC for Cross-Realm Trust
      • Integrating MIT Kerberos and Active Directory
      • Hadoop Users (user:group) and Kerberos Principals
      • Mapping Kerberos Principals to Short Names
    • Authorization
      • Cloudera Manager User Roles
      • HDFS Extended ACLs
      • Authorization for HDFS Web UIs
      • Configuring LDAP Group Mappings
      • Authorization With Apache Sentry
      • Configuring HBase Authorization
    • Encrypting Data in Transit
      • Understanding Keystores and Truststores
      • Configuring TLS Encryption for Cloudera Manager and CDH Using Auto-TLS
      • Configuring TLS Encryption for Cloudera Manager
      • Configuring TLS/SSL Encryption for CDH Services
        • Configuring TLS/SSL for HDFS, YARN and MapReduce
        • Configuring TLS/SSL for HBase
        • Configuring TLS/SSL for Flume Thrift Source and Sink
        • Configuring Encrypted Communication Between HiveServer2 and Client Drivers
        • Configuring TLS/SSL for Hue
        • Configuring TLS/SSL for Impala
        • Configuring TLS/SSL for Oozie
        • Configuring TLS/SSL for Solr
        • Spark Encryption
        • Configuring TLS/SSL for HttpFS
      • Configuring TLS/SSL for Navigator Audit Server
      • Configuring TLS/SSL for Navigator Metadata Server
      • Configuring TLS/SSL for Kafka (Navigator Event Broker)
      • Configuring Encrypted Transport for HDFS
      • Configuring Encrypted Transport for HBase
    • Encrypting Data at Rest
      • Data at Rest Encryption Reference Architecture
      • Data at Rest Encryption Requirements
      • Resource Planning for Data at Rest Encryption
      • HDFS Transparent Encryption
        • Optimizing Performance for HDFS Transparent Encryption
        • Enabling HDFS Encryption Using the Wizard
        • Managing Encryption Keys and Zones
        • Configuring the Key Management Server (KMS)
        • Securing the Key Management Server (KMS)
          • Configuring KMS Access Control Lists (ACLs)
        • Migrating from a Key Trustee KMS to an HSM KMS
        • Migrating Keys from a Java KeyStore to Cloudera Navigator Key Trustee Server
        • Migrating a Key Trustee KMS Server Role Instance to a New Host
        • Configuring CDH Services for HDFS Encryption
    • Cloudera Navigator Key Trustee Server
      • Backing Up and Restoring Key Trustee Server and Clients
      • Initializing Standalone Key Trustee Server
      • Configuring a Mail Transfer Agent for Key Trustee Server
      • Verifying Cloudera Navigator Key Trustee Server Operations
      • Managing Key Trustee Server Organizations
      • Managing Key Trustee Server Certificates
    • Cloudera Navigator Key HSM
      • Initializing Navigator Key HSM
      • HSM-Specific Setup for Cloudera Navigator Key HSM
      • Validating Key HSM Settings
      • Managing the Navigator Key HSM Service
      • Integrating Key HSM with Key Trustee Server
    • Cloudera Navigator Encrypt
      • Registering Cloudera Navigator Encrypt with Key Trustee Server
      • Preparing for Encryption Using Cloudera Navigator Encrypt
      • Encrypting and Decrypting Data Using Cloudera Navigator Encrypt
      • Navigator Encrypt Access Control List
      • Maintaining Cloudera Navigator Encrypt
    • Configuring Encryption for Data Spills
      • Configuring Encrypted On-disk File Channels for Flume
    • Impala Security Overview
      • Security Guidelines for Impala
      • Securing Impala Data and Log Files
      • Installation Considerations for Impala Security
      • Securing the Hive Metastore Database
      • Securing the Impala Web User Interface
    • Kudu Security Overview
    • Security How-To Guides
      • Add Root and Intermediate CAs to Truststore for TLS/SSL
      • Amazon S3 Security
      • Authenticate Kerberos Principals Using Java
      • Check Cluster Security Settings
      • Configure Antivirus Software on CDH Hosts
      • Configure Browser-based Interfaces to Require Authentication (SPNEGO)
      • Configure Browsers for Kerberos Authentication (SPNEGO)
      • Configure Cluster to Use Kerberos Authentication
      • Convert DER, JKS, PEM Files for TLS/SSL Artifacts
      • Configure Authentication for Amazon S3
      • Configure Encryption for Amazon S3
      • Configure AWS Credentials
      • Enable Sensitive Data Redaction
      • Log a Security Support Case
      • Obtain and Deploy Keys and Certificates for TLS/SSL
      • Renew and Redistribute Certificates
      • Set Up a Gateway Host to Restrict Access to the Cluster
      • Set Up Access to Cloudera EDH or Altus Director (Microsoft Azure Marketplace)
      • Use Self-Signed Certificates for TLS
    • Troubleshooting Security Issues
      • Error Messages
      • Authentication and Kerberos Issues
      • HDFS Encryption Issues
      • Key Trustee KMS Encryption Issues
      • TLS/SSL Issues
      • YARN, MRv1, and Linux OS Security
        • TaskController Error Codes (MRv1)
        • ContainerExecutor Error Codes (YARN)
  • Cloudera Navigator Data Management
    • Overview
    • Search
      • Performing Actions on Entities
    • Auditing
      • Using Audit Events to Understand Cluster Activity
      • Exploring Audit Data
      • Cloudera Navigator Audit Event Reports
    • Analytics
    • Policies
    • Lineage
      • Using the Lineage View
      • Using Lineage to Display Table Schema
      • Generating Lineage Diagrams
    • Business Metadata
      • Defining Managed Properties
      • Adding and Editing Metadata
    • Administration (Navigator Console)
      • Managing Metadata Storage with Purge
      • Administering Navigator User Roles
    • Navigator Configuration and Management
      • Accessing Navigator Data Management Logs
      • Backing Up Cloudera Navigator Data
      • Authentication and Authorization
      • Configuring Cloudera Navigator to work with Hue HA
      • Encryption (TLS/SSL) and Cloudera Navigator
      • Limiting Sensitive Data in Navigator Logs
      • Preventing Concurrent Logins from the Same User
      • Navigator Audit Server Management
        • Setting Up Navigator Audit Server
        • Enabling Audit and Log Collection for Services
        • Configuring Service Auditing Properties
        • Adding Audit Filters
        • Monitoring Navigator Audit Service Health
        • Publishing Audit Events
        • Maintaining Navigator Audit Server
      • Navigator Metadata Server Management
        • Setting Up Navigator Metadata Server
        • Navigator Metadata Server Tuning
        • Configuring and Managing Extraction
        • Hive and Impala Lineage Configuration
        • Configuring the Server for Policy Messages
    • Cloudera Navigator and the Cloud
      • Using Cloudera Navigator with Altus Clusters
        • Configuring Extraction for Altus Clusters on AWS
      • Using Cloudera Navigator with Amazon S3
        • Configuring Extraction for Amazon S3
    • Cloudera Navigator APIs
      • Navigator APIs Overview
      • Applying Metadata to HDFS and Hive Entities using the API
      • Using the Purge APIs for Metadata Maintenance Tasks
    • Cloudera Navigator Reference
      • Lineage Diagram Icons
      • Search Syntax and Properties
      • Service Audit Events
      • Service Metadata Entity Types
      • Metadata Policy Expressions
      • User Roles and Privileges Reference
    • Troubleshooting Navigator Data Management
  • CDH Component Guides
    • Crunch
    • Flume
      • Configuring
        • Configuring the Flume Properties File
        • Files Installed by the Flume RPM and Debian Packages
        • Configuring Flume Security with Kafka
      • Using & Managing
        • Running Flume
        • Supported Sources, Sinks, and Channels
        • Viewing the Flume Documentation
    • HBase
      • Configuring
        • Accessing HBase by using the HBase Shell
        • HBase Online Merge
        • Using MapReduce with HBase
        • Configuring HBase Garbage Collection
        • Configuring the HBase Canary
        • Configuring the Blocksize for HBase
        • Configuring the HBase BlockCache
        • Configuring Quotas
        • Configuring the HBase Scanner Heartbeat
        • Limiting the Speed of Compactions
        • Configuring and Using the HBase REST API
        • Configuring HBase MultiWAL Support
        • Storing Medium Objects (MOBs) in HBase
        • Configuring the Storage Policy for the Write-Ahead Log (WAL)
      • Using & Managing
        • Starting and Stopping HBase
        • Accessing HBase by using the HBase Shell
        • Using HBase Command-Line Utilities
        • Checking Consistency in HBase Tables
        • Hedged Reads
        • Reading Data from HBase
        • HBase Filtering
        • Writing Data to HBase
        • Importing Data Into HBase
        • Exposing HBase Metrics to a Ganglia Server
        • Using HashTable and SyncTable Tool
      • Security
      • Troubleshooting
    • Hive
      • CDH 6.0 Changes
        • Hive Component Changes
          • New Features
          • Incompatible Changes
        • Hive on Spark Changes
        • Unsupported Features
      • Installation and Upgrade
      • Configuring
        • Configuring Hive Metastore
        • Configuring HiveServer2
        • Starting the Metastore
        • File System Permissions
        • Starting, Stopping, & Using HS2
        • Using Hive w/HBase
        • Using Schema Tool
        • Installing JDBC/ODBC Drivers
        • Setting HADOOP_MAPRED_HOME
        • Configuring HMS for HDFS HA
      • Using & Managing
        • Managing Hive with Cloudera Manager
        • Ingesting & Querying Data
        • Using Parquet Tables
        • Running Hive on Spark
        • Using HS2 Web UI
        • Accessing Table Statistics
        • Managing UDFs
        • Hive ETL Jobs on S3
        • Hive with Amazon RDS
        • Hive with ADLS
      • Tuning
        • Tuning Hive on Spark
        • Tuning Hive on S3
        • Configuring Metastore HA
        • Configuring HS2 HA
        • Enabling Query Vectorization
      • Data Replication
      • Security
      • HCatalog
        • HCatalog Prerequisites
        • Configuration Change on Hosts Used with HCatalog
        • Accessing Table Information with the HCatalog Command-line API
        • Accessing Table Data with MapReduce
        • Accessing Table Data with Pig
        • Accessing Table Information with REST
        • Viewing the HCatalog Documentation
      • Troubleshooting
    • Hue
      • Hue Versions
      • Reference Architecture
      • Installation & Upgrade
      • Using
        • Enable SQL Editor Autocompleter
        • Use Governance-Based Data Discovery
        • Use S3 as Source or Sink in Hue
      • Administration
        • Configuring
        • Customize Hue Web UI
        • Enable Governance-Based Data Discovery
        • Enable S3 Cloud Storage
        • Run Shell Commands
        • Connecting a Database
          • Connect to MySQL or MariaDB
          • Connect to PostgreSQL
          • Connect to Oracle (Parcel)
          • Connect to Oracle (Package)
          • Custom Database Tutorial
        • Migrate the Database
        • Populate the Database
      • Performance Tuning
        • Add Load Balancer
        • Configure High Availability
        • Hue/HDFS High Availability
      • Security
        • User Permissions
        • Create Password Scripts
        • Authenticate Users with LDAP
        • Synchronize with LDAP Server
        • Authenticate Users with SAML
        • Authorize Groups with Sentry
      • Troubleshooting
        • Potential Misconfiguration
    • Impala
      • Concepts and Architecture
        • Components
        • Developing Applications
        • Role in the Hadoop Ecosystem
      • Deployment Planning
        • Impala Requirements
        • Designing Schemas
      • Tutorials
      • Administration
        • How to Configure Resource Management for Impala
        • Setting Timeouts
        • Load-Balancing Proxy for HA
        • Managing Disk Space
        • Auditing
        • Viewing Lineage Info
      • SQL Reference
        • Comments
        • Data Types
          • ARRAY Complex Type (CDH 5.5 or higher only)
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          • MAP Complex Type (CDH 5.5 or higher only)
          • REAL
          • SMALLINT
          • STRING
          • STRUCT Complex Type (CDH 5.5 or higher only)
          • TIMESTAMP
          • TINYINT
          • VARCHAR
          • Complex Types (CDH 5.5 or higher only)
        • Literals
        • SQL Operators
        • Schema Objects and Object Names
          • Aliases
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          • DROP ROLE
          • DROP STATS
          • DROP TABLE
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            • Joins
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            • DISTINCT Operator
          • SET
            • Query Options for the SET Statement
              • ABORT_ON_ERROR
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              • APPX_COUNT_DISTINCT
              • BATCH_SIZE
              • BUFFER_POOL_LIMIT
              • COMPRESSION_CODEC
              • COMPUTE_STATS_MIN_SAMPLE_SIZE
              • DEBUG_ACTION
              • DECIMAL_V2
              • DEFAULT_JOIN_DISTRIBUTION_MODE
              • DEFAULT_SPILLABLE_BUFFER_SIZE
              • DISABLE_CODEGEN
              • DISABLE_CODEGEN_ROWS_THRESHOLD
              • DISABLE_ROW_RUNTIME_FILTERING
              • DISABLE_STREAMING_PREAGGREGATIONS
              • DISABLE_UNSAFE_SPILLS
              • ENABLE_EXPR_REWRITES
              • EXEC_SINGLE_NODE_ROWS_THRESHOLD
              • EXEC_TIME_LIMIT_S
              • EXPLAIN_LEVEL
              • HBASE_CACHE_BLOCKS
              • HBASE_CACHING
              • IDLE_SESSION_TIMEOUT
              • LIVE_PROGRESS
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              • MAX_ERRORS
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              • MAX_ROW_SIZE
              • MAX_SCAN_RANGE_LENGTH
              • MEM_LIMIT
              • MIN_SPILLABLE_BUFFER_SIZE
              • MT_DOP
              • NUM_NODES
              • NUM_SCANNER_THREADS
              • OPTIMIZE_PARTITION_KEY_SCANS
              • PARQUET_COMPRESSION_CODEC
              • PARQUET_ANNOTATE_STRINGS_UTF8
              • PARQUET_ARRAY_RESOLUTION
              • PARQUET_DICTIONARY_FILTERING
              • PARQUET_FALLBACK_SCHEMA_RESOLUTION
              • PARQUET_FILE_SIZE
              • PARQUET_READ_STATISTICS
              • PREFETCH_MODE
              • QUERY_TIMEOUT_S
              • REQUEST_POOL
              • REPLICA_PREFERENCE
              • RUNTIME_BLOOM_FILTER_SIZE
              • RUNTIME_FILTER_MAX_SIZE
              • RUNTIME_FILTER_MIN_SIZE
              • RUNTIME_FILTER_MODE
              • RUNTIME_FILTER_WAIT_TIME_MS
              • S3_SKIP_INSERT_STAGING
              • SCHEDULE_RANDOM_REPLICA
              • SCRATCH_LIMIT
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              • SUPPORT_START_OVER
              • SYNC_DDL
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            • GROUP_CONCAT
            • MAX
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            • NDV
            • STDDEV, STDDEV_SAMP, STDDEV_POP
            • SUM
            • VARIANCE, VARIANCE_SAMP, VARIANCE_POP, VAR_SAMP, VAR_POP
          • Analytic Functions
        • User-Defined Functions (UDFs)
        • SQL Differences Between Impala and Hive
        • Porting SQL
      • The Impala Shell
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        • Benchmarking
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      • Using Impala to Query Kudu Tables
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    • Kafka
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        • Managing Topics across Multiple Kafka Clusters
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        • Kafka Metrics
      • Kafka Administration
        • Administration Basics
        • Broker Migration
        • User Limits for Kafka
        • Quotas
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        • Handling Large Messages
        • Cluster Sizing
        • Broker Configuration
        • System-Level Broker Tuning
        • Kafka-ZooKeeper Performance Tuning
      • Kafka Reference
        • Metrics Reference
        • Useful Shell Command Reference
      • Kafka Public APIs
      • Kafka Frequently Asked Questions
    • Kudu
      • Concepts and Architecture
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      • Using Apache Impala with Kudu
      • Schema Design
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      • Background Tasks
      • Scaling Guide
      • Troubleshooting
      • More Resources
    • Oozie
      • Configuration
        • Configuring an External Database for Oozie
        • Oozie High Availability
        • Configuring Oozie to Use HDFS HA
        • Oozie Authentication
        • Using Sqoop Actions with Oozie
        • Configuring Oozie to Enable MapReduce Jobs To Read/Write from Amazon S3
        • Configuring Oozie to Enable MapReduce Jobs To Read/Write from Microsoft Azure (ADLS)
      • Managing Oozie
        • Starting, Stopping, and Accessing the Oozie Server
        • Adding the Oozie Service Using Cloudera Manager
        • Redeploying the Oozie ShareLib
        • Configuring Oozie Data Purge Settings Using Cloudera Manager
        • Dumping and Loading an Oozie Database Using Cloudera Manager
        • Adding Schema to Oozie Using Cloudera Manager
        • Enabling the Oozie Web Console on Managed Clusters
        • Enabling Oozie SLA with Cloudera Manager
        • Setting the Oozie Database Timezone
        • Scheduling in Oozie Using Cron-like Syntax
    • Search
      • Cloudera Search Overview
        • Understanding Cloudera Search
        • Cloudera Search and Other Cloudera Components
        • Cloudera Search Architecture
        • Cloudera Search Tasks and Processes
      • Cloudera Search Tutorial
        • Validating the Cloudera Search Deployment
        • Preparing to Index Sample Tweets with Cloudera Search
        • Using MapReduce Batch Indexing to Index Sample Tweets
        • Near Real Time (NRT) Indexing Tweets Using Flume
        • Using Hue with Cloudera Search
      • Deployment Planning for Cloudera Search
        • Schemaless Mode
      • Deploying Cloudera Search
        • Using Search through a Proxy for High Availability
        • Using Custom JAR Files with Search
        • Cloudera Search Security
      • Managing Cloudera Search
        • Managing Cloudera Search Configuration
        • Managing Collections in Cloudera Search
        • solrctl Reference
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        • Migrating Solr Replicas
        • Backing Up and Restoring Cloudera Search
      • ETL With Cloudera Morphlines
        • Example Morphline Usage
      • Indexing Data
        • Near Real Time Indexing
          • Flume NRT Indexing
            • Flume MorphlineSolrSink Configuration Options
            • Flume MorphlineInterceptor Configuration Options
            • Flume Solr UUIDInterceptor Configuration Options
            • Flume Solr BlobHandler Configuration Options
            • Flume Solr BlobDeserializer Configuration Options
          • Lily HBase NRT Indexing
            • Using the Lily HBase NRT Indexer Service
            • Configuring Lily HBase Indexer Security
        • Batch Indexing
          • Spark Indexing
          • MapReduce Indexing
            • MapReduceIndexerTool
            • Lily HBase Batch Indexing
      • Cloudera Search Frequently Asked Questions
      • Troubleshooting Cloudera Search
        • Cloudera Search Configuration and Log Files
        • Identifying Problems in Your Cloudera Search Deployment
        • Solr Query Returns no Documents when Executed with a Non-Privileged User
    • Sentry
      • Before You Install Sentry
      • Installing and Upgrading the Sentry Service
      • Configuring
        • Sentry High Availability
        • Enabling Sentry Authorization for Impala
        • Configuring Sentry Authorization for Cloudera Search
      • Using & Managing
        • Synchronizing HDFS ACLs and Sentry Permissions
        • Authorization Privilege Model for Hive and Impala
        • Authorization Privilege Model for Cloudera Search
        • Hive SQL Syntax for Use with Sentry
        • Using the Sentry Web Server
        • Sentry Debugging and Failure Scenarios
      • Troubleshooting
      • How-To Guides
        • Enabling High Availability
        • Verify HDFS ACL Sync
        • Managing Table Access in Hue
    • Spark
      • Running Your First Spark Application
      • Troubleshooting for Spark
      • Frequently Asked Questions about Apache Spark in CDH
      • Spark Application Overview
      • Developing Spark Applications
        • Developing and Running a Spark WordCount Application
        • Using Spark Streaming
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        • Using Spark MLlib
        • Accessing External Storage
          • Accessing Data Stored in Amazon S3 through Spark
          • Accessing Data Stored in Azure Data Lake Store (ADLS) through Spark
          • Accessing Avro Data Files From Spark SQL Applications
          • Accessing Parquet Files From Spark SQL Applications
        • Building Spark Applications
        • Configuring Spark Applications
      • Running Spark Applications
        • Running Spark Applications on YARN
        • Using PySpark
          • Running Spark Python Applications
          • Spark and IPython and Jupyter Notebooks
        • Tuning Spark Applications
      • Spark and Hadoop Integration
        • Building and Running a Crunch Application with Spark
    • File Formats and Compression
      • Parquet
      • Avro
      • Data Compression
      • Snappy Compression
  • Glossary

DECIMAL_V2 Query Option

A query option that changes behavior related to the DECIMAL data type. Set this option to FALSE for backward compatibility to Impala 2.x.

Type: Boolean

Default: TRUE

Categories: Impala | Impala Query Options | All Categories

DEBUG_ACTION
DEFAULT_JOIN_DISTRIBUTION_MODE
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