This is the documentation for Cloudera Manager 5.1.x. Documentation for other versions is available at Cloudera Documentation.

Hive properties in CDH 4.5.0

Role groups:

Gateway Default Group

Advanced

Display Name Description Related Name Default Value API Name Required
Hive Client Advanced Configuration Snippet (Safety Valve) for hive-site.xml For advanced use only, a string to be inserted into the client configuration for hive-site.xml. hive_client_config_safety_valve false
Gateway Client Environment Advanced Configuration Snippet for hive-env.sh (Safety Valve) For advanced use only, key-value pairs (one on each line) to be inserted into the client configuration for hive-env.sh. hive_client_env_safety_valve false
Client Java Configuration Options These are Java command line arguments. Commonly, garbage collection flags or extra debugging flags would be passed here. -Djava.net.preferIPv4Stack=true hive_client_java_opts false
Hive Metastore Connection Timeout Timeout for requests to the Hive Metastore Server. Consider increasing this if you have tables with a lot of metadata and see timeout errors. Used by most Hive Metastore clients such as Hive CLI and HiveServer2, but not by Impala. Impala has a separately configured timeout. hive.metastore.client.socket.timeout 5 minute(s) hive_metastore_timeout false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false

Other

Display Name Description Related Name Default Value API Name Required
Alternatives Priority The priority level that the client configuration will have in the Alternatives system on the hosts. Higher priority levels will cause Alternatives to prefer this configuration over any others. 90 client_config_priority true

Resource Management

Display Name Description Related Name Default Value API Name Required
Client Java Heap Size in Bytes Maximum size in bytes for the Java process heap memory. Passed to Java -Xmx. 256 MiB hive_client_java_heapsize false

Hive Metastore Server Default Group

Advanced

Display Name Description Related Name Default Value API Name Required
Hive Metastore Server Advanced Configuration Snippet (Safety Valve) for hive-site.xml For advanced use only, a string to be inserted into hive-site.xml for this role only. hive_metastore_config_safety_valve false
Hive Metastore Server Environment Advanced Configuration Snippet (Safety Valve) For advanced use only, key-value pairs (one on each line) to be inserted into a role's environment. Applies to configurations of this role except client configuration. hive_metastore_env_safety_valve false
Java Configuration Options for Hive Metastore Server These arguments will be passed as part of the Java command line. Commonly, garbage collection flags or extra debugging flags would be passed here. -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:-CMSConcurrentMTEnabled -XX:CMSInitiatingOccupancyFraction=70 -XX:+CMSParallelRemarkEnabled hive_metastore_java_opts false
Max Hive Metastore Server Threads Maximum number of worker threads in the Hive Metastore Server's thread pool hive.metastore.server.max.threads 100000 hive_metastore_max_threads true
Min Hive Metastore Server Threads Minimum number of worker threads in the Hive Metastore Server's thread pool hive.metastore.server.min.threads 200 hive_metastore_min_threads true
Hive Metastore Server Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Heap Dump Directory Path to directory where heap dumps are generated when java.lang.OutOfMemoryError error is thrown. This directory is automatically created if it doesn't exist. However, if this directory already exists, role user must have write access to this directory. If this directory is shared amongst multiple roles, it should have 1777 permissions. Note that the heap dump files are created with 600 permissions and are owned by the role user. The amount of free space in this directory should be greater than the maximum Java Process heap size configured for this role. /tmp oom_heap_dump_dir false
Dump Heap When Out of Memory When set, generates heap dump file when java.lang.OutOfMemoryError is thrown. false oom_heap_dump_enabled true
Kill When Out of Memory When set, a SIGKILL signal is sent to the role process when java.lang.OutOfMemoryError is thrown. true oom_sigkill_enabled true
Automatically Restart Process When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure. false process_auto_restart true

Logs

Display Name Description Related Name Default Value API Name Required
Hive Metastore Server Logging Threshold The minimum log level for Hive Metastore Server logs INFO log_threshold false
Hive Metastore Server Maximum Log File Backups The maximum number of rolled log files to keep for Hive Metastore Server logs. Typically used by log4j. 10 max_log_backup_index false
Hive Metastore Server Max Log Size The maximum size, in megabytes, per log file for Hive Metastore Server logs. Typically used by log4j. 200 MiB max_log_size false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Health Alerts for this Role When set, Cloudera Manager will send alerts when the health of this role reaches the threshold specified by the EventServer setting eventserver_health_events_alert_threshold true enable_alerts false
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false
File Descriptor Monitoring Thresholds The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit. Warning: 50.0 %, Critical: 70.0 % hivemetastore_fd_thresholds false
Hive Metastore Server Host Health Test When computing the overall Hive Metastore Server health, consider the host's health. true hivemetastore_host_health_enabled false
Hive Metastore Server Process Health Test Enables the health test that the Hive Metastore Server's process state is consistent with the role configuration true hivemetastore_scm_health_enabled false
Log Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Warning: 10 GiB, Critical: 5 GiB log_directory_free_space_absolute_thresholds false
Log Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Log Directory Free Space Monitoring Absolute Thresholds setting is configured. Warning: Never, Critical: Never log_directory_free_space_percentage_thresholds false
Hive Metastore Canary Health Test Enables the health test that checks that basic Hive Metastore operations succeed true metastore_canary_health_enabled false
Role Triggers The configured triggers for this role. This is a JSON formatted list of triggers. These triggers are evaluated as part as the health system. Every trigger expression is parsed, and if the trigger condition is met, the list of actions provided in the trigger expression is executed.Each trigger has all of the following fields:
  • triggerName (mandatory) - the name of the trigger. This value must be unique for the specific role.
  • triggerExpression (mandatory) - a tsquery expression representing the trigger.
  • streamThreshold (optional) - the maximum number of streams that can satisfy a condition of a trigger before the condition fires. By default set to 0, and any stream returned will cause the condition to fire.
  • enabled (optional) - by default set to 'true'. If set to 'false' the trigger will not be evaluated.
For example, here is a JSON formatted trigger configured for a DataNode that fires if the DataNode has more than 1500 file-descriptors opened:
[{"triggerName": "sample-trigger",
  "triggerExpression": "IF (SELECT fd_open WHERE roleName=$ROLENAME and last(fd_open) > 1500) DO health:bad",
  "streamThreshold": 0, "enabled": "true"}]
Consult the trigger rules documentation for more details on how to write triggers using tsquery.The JSON format is evolving and may change in the future and as a result backward compatibility is not guaranteed between releases at this time.		 [] role_triggers true
Unexpected Exits Thresholds The health test thresholds for unexpected exits encountered within a recent period specified by the unexpected_exits_window configuration for the role. Warning: Never, Critical: Any unexpected_exits_thresholds false
Unexpected Exits Monitoring Period The period to review when computing unexpected exits. 5 minute(s) unexpected_exits_window false

Other

Display Name Description Related Name Default Value API Name Required
Hive Metastore Server Log Directory Directory where Hive Metastore Server will place its log files. /var/log/hive hive_log_dir false

Performance

Display Name Description Related Name Default Value API Name Required
Maximum Process File Descriptors If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value. rlimit_fds false

Ports and Addresses

Display Name Description Related Name Default Value API Name Required
Hive Metastore Server Port Port on which Hive Metastore Server will listen for connections. hive.metastore.port 9083 hive_metastore_port false

Resource Management

Display Name Description Related Name Default Value API Name Required
Java Heap Size of Hive Metastore Server in Bytes Maximum size in bytes for the Java Process heap memory. Passed to Java -Xmx. 256 MiB hive_metastore_java_heapsize false
Cgroup CPU Shares Number of CPU shares to assign to this role. The greater the number of shares, the larger the share of the host's CPUs that will be given to this role when the host experiences CPU contention. Must be between 2 and 262144. Defaults to 1024 for processes not managed by Cloudera Manager. cpu.shares 1024 rm_cpu_shares true
Cgroup I/O Weight Weight for the read I/O requests issued by this role. The greater the weight, the higher the priority of the requests when the host experiences I/O contention. Must be between 100 and 1000. Defaults to 1000 for processes not managed by Cloudera Manager. blkio.weight 500 rm_io_weight true
Cgroup Memory Hard Limit Hard memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.limit_in_bytes -1 MiB rm_memory_hard_limit true
Cgroup Memory Soft Limit Soft memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process if and only if the host is facing memory pressure. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.soft_limit_in_bytes -1 MiB rm_memory_soft_limit true

HiveServer2 Default Group

Advanced

Display Name Description Related Name Default Value API Name Required
HiveServer2 Advanced Configuration Snippet (Safety Valve) for hive-site.xml For advanced use only, a string to be inserted into hive-site.xml for this role only. hive_hs2_config_safety_valve false
HiveServer2 Environment Advanced Configuration Snippet (Safety Valve) For advanced use only, key-value pairs (one on each line) to be inserted into a role's environment. Applies to configurations of this role except client configuration. hive_hs2_env_safety_valve false
Java Configuration Options for HiveServer2 These arguments will be passed as part of the Java command line. Commonly, garbage collection flags or extra debugging flags would be passed here. -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:-CMSConcurrentMTEnabled -XX:CMSInitiatingOccupancyFraction=70 -XX:+CMSParallelRemarkEnabled hiveserver2_java_opts false
Max HiveServer2 Threads Maximum number of worker threads in HiveServer2's thread pool hive.server2.thrift.max.worker.threads 100 hiveserver2_max_threads true
Min HiveServer2 Threads Minimum number of worker threads in HiveServer2's thread pool hive.server2.thrift.min.worker.threads 5 hiveserver2_min_threads true
HiveServer2 Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Heap Dump Directory Path to directory where heap dumps are generated when java.lang.OutOfMemoryError error is thrown. This directory is automatically created if it doesn't exist. However, if this directory already exists, role user must have write access to this directory. If this directory is shared amongst multiple roles, it should have 1777 permissions. Note that the heap dump files are created with 600 permissions and are owned by the role user. The amount of free space in this directory should be greater than the maximum Java Process heap size configured for this role. /tmp oom_heap_dump_dir false
Dump Heap When Out of Memory When set, generates heap dump file when java.lang.OutOfMemoryError is thrown. false oom_heap_dump_enabled true
Kill When Out of Memory When set, a SIGKILL signal is sent to the role process when java.lang.OutOfMemoryError is thrown. true oom_sigkill_enabled true
Automatically Restart Process When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure. false process_auto_restart true

Logs

Display Name Description Related Name Default Value API Name Required
HiveServer2 Logging Threshold The minimum log level for HiveServer2 logs INFO log_threshold false
HiveServer2 Maximum Log File Backups The maximum number of rolled log files to keep for HiveServer2 logs. Typically used by log4j. 10 max_log_backup_index false
HiveServer2 Max Log Size The maximum size, in megabytes, per log file for HiveServer2 logs. Typically used by log4j. 200 MiB max_log_size false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Health Alerts for this Role When set, Cloudera Manager will send alerts when the health of this role reaches the threshold specified by the EventServer setting eventserver_health_events_alert_threshold true enable_alerts false
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false
File Descriptor Monitoring Thresholds The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit. Warning: 50.0 %, Critical: 70.0 % hiveserver2_fd_thresholds false
HiveServer2 Host Health Test When computing the overall HiveServer2 health, consider the host's health. true hiveserver2_host_health_enabled false
HiveServer2 Process Health Test Enables the health test that the HiveServer2's process state is consistent with the role configuration true hiveserver2_scm_health_enabled false
Log Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Warning: 10 GiB, Critical: 5 GiB log_directory_free_space_absolute_thresholds false
Log Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Log Directory Free Space Monitoring Absolute Thresholds setting is configured. Warning: Never, Critical: Never log_directory_free_space_percentage_thresholds false
Role Triggers The configured triggers for this role. This is a JSON formatted list of triggers. These triggers are evaluated as part as the health system. Every trigger expression is parsed, and if the trigger condition is met, the list of actions provided in the trigger expression is executed.Each trigger has all of the following fields:
  • triggerName (mandatory) - the name of the trigger. This value must be unique for the specific role.
  • triggerExpression (mandatory) - a tsquery expression representing the trigger.
  • streamThreshold (optional) - the maximum number of streams that can satisfy a condition of a trigger before the condition fires. By default set to 0, and any stream returned will cause the condition to fire.
  • enabled (optional) - by default set to 'true'. If set to 'false' the trigger will not be evaluated.
For example, here is a JSON formatted trigger configured for a DataNode that fires if the DataNode has more than 1500 file-descriptors opened:
[{"triggerName": "sample-trigger",
  "triggerExpression": "IF (SELECT fd_open WHERE roleName=$ROLENAME and last(fd_open) > 1500) DO health:bad",
  "streamThreshold": 0, "enabled": "true"}]
Consult the trigger rules documentation for more details on how to write triggers using tsquery.The JSON format is evolving and may change in the future and as a result backward compatibility is not guaranteed between releases at this time.		 [] role_triggers true
Unexpected Exits Thresholds The health test thresholds for unexpected exits encountered within a recent period specified by the unexpected_exits_window configuration for the role. Warning: Never, Critical: Any unexpected_exits_thresholds false
Unexpected Exits Monitoring Period The period to review when computing unexpected exits. 5 minute(s) unexpected_exits_window false

Other

Display Name Description Related Name Default Value API Name Required
HiveServer2 Log Directory Directory where HiveServer2 will place its log files. /var/log/hive hive_log_dir false
HiveServer2 Enable Impersonation HiveServer2 will impersonate the beeline client user when talking to other services such as Mapreduce and Hdfs. hive.server2.enable.impersonation true hiveserver2_enable_impersonation false

Performance

Display Name Description Related Name Default Value API Name Required
Maximum Process File Descriptors If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value. rlimit_fds false

Ports and Addresses

Display Name Description Related Name Default Value API Name Required
HiveServer2 Port Port on which HiveServer2 will listen for connections. hive.server2.thrift.port 10000 hs2_thrift_address_port false

Resource Management

Display Name Description Related Name Default Value API Name Required
Java Heap Size of HiveServer2 in Bytes Maximum size in bytes for the Java Process heap memory. Passed to Java -Xmx. 256 MiB hiveserver2_java_heapsize false
Cgroup CPU Shares Number of CPU shares to assign to this role. The greater the number of shares, the larger the share of the host's CPUs that will be given to this role when the host experiences CPU contention. Must be between 2 and 262144. Defaults to 1024 for processes not managed by Cloudera Manager. cpu.shares 1024 rm_cpu_shares true
Cgroup I/O Weight Weight for the read I/O requests issued by this role. The greater the weight, the higher the priority of the requests when the host experiences I/O contention. Must be between 100 and 1000. Defaults to 1000 for processes not managed by Cloudera Manager. blkio.weight 500 rm_io_weight true
Cgroup Memory Hard Limit Hard memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.limit_in_bytes -1 MiB rm_memory_hard_limit true
Cgroup Memory Soft Limit Soft memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process if and only if the host is facing memory pressure. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.soft_limit_in_bytes -1 MiB rm_memory_soft_limit true

Service-Wide

Advanced

Display Name Description Related Name Default Value API Name Required
Hive Auxiliary JARs Directory Directory containing auxiliary JARs used by Hive. This should be a directory location and not a classpath containing one or more JARs. This directory must be created and managed manually on Hive CLI or HiveServer2 host. hive_aux_jars_path_dir false
Bypass Hive Metastore Server Instead of talking to Hive Metastore Server for Metastore information, Hive clients will talk directly to the Metastore database. false hive_bypass_metastore_server false
Server Name for Sentry Authorization The server name used when defining privilege rules in Sentry authorization. Sentry uses this name as an alias for the Hive service. It has nothing to do with any physical server name. hive.sentry.server server1 hive_sentry_server false
Hive Service Advanced Configuration Snippet (Safety Valve) for sentry-site.xml For advanced use only, a string to be inserted into sentry-site.xml. Applies to configurations of all roles in this service except client configuration. hive_server2_sentry_safety_valve false
Hive Service Advanced Configuration Snippet (Safety Valve) for hive-site.xml For advanced use only, a string to be inserted into hive-site.xml. Applies to configurations of all roles in this service except client configuration. hive_service_config_safety_valve false
Hive Service Environment Advanced Configuration Snippet (Safety Valve) For advanced use only, key-value pairs (one on each line) to be inserted into a role's environment. Applies to configurations of all roles in this service except client configuration. hive_service_env_safety_valve false
Hive Client Advanced Configuration Snippet (Safety Valve) for navigator.client.properties For advanced use only, a string to be inserted into the client configuration for navigator.client.properties. navigator_client_config_safety_valve false
System Group The group that this service's processes should run as. hive process_groupname true
System User The user that this service's processes should run as. hive process_username true

Cloudera Navigator

Display Name Description Related Name Default Value API Name Required
Enable Collection Enable collection of audit events from the service's roles. true navigator_audit_enabled false
Event Filter Event filters are defined in a JSON object like the following: 
{
  "defaultAction" : ("accept", "discard"),
  "rules" : [
    {
      "action" : ("accept", "discard"),
      "fields" : [
        {
          "name" : "fieldName",
          "match" : "regex"
        }
      ]
    }
  ]
}
A filter has a default action and a list of rules, in order of precedence. Each rule defines an action, and a list of fields to match against the audit event. A rule is "accepted" if all the listed field entries match the audit event. At that point, the action declared by the rule is taken. If no rules match the event, the default action is taken. Actions default to "accept" if not defined in the JSON object. The following is the list of fields that can be filtered for Hive events:
  • userName: the user performing the action.
  • ipAddress: the IP from where the request originated.
  • operation: the Hive operation being performed.
  • databaseName: the databaseName for the operation.
  • tableName: the tableName for the operation.
 navigator.event.filter comment : [ Default filter for Hive services., Discards events generated by Hive MR jobs in /tmp directory ], defaultAction : accept, rules : [ action : discard, fields : [ name : operation, match : QUERY , name : objectType, match : DFS_DIR, name : resourcePath, match : /tmp/hive-(?:.+)?/hive_(?:.+)?/-mr-.* ] ] navigator_audit_event_filter false
Queue Policy Action to take when the audit event queue is full. Drop the event or shutdown the affected process. navigator.batch.queue_policy DROP navigator_audit_queue_policy false
Event Tracker Configures the rules for event tracking and coalescing. This feature is used to define equivalency between different audit events. When events match, according to a set of configurable parameters, only one entry in the audit list is generated for all the matching events. Tracking works by keeping a reference to events when they first appear, and comparing other incoming events against the "tracked" events according to the rules defined here. Event trackers are defined in a JSON object like the following: 
{
  "timeToLive" : [integer],
  "fields" : [
    {
      "type" : [string],
      "name" : [string]
    }
  ]
}
Where:
  • timeToLive: maximum amount of time an event will be tracked, in milliseconds. Must be provided. This defines how long, since it's first seen, an event will be tracked. A value of 0 disables tracking.
  • fields: list of fields to compare when matching events against tracked events.
Each field has an evaluator type associated with it. The evaluator defines how the field data is to be compared. The following evaluators are available:
  • value: uses the field value for comparison.
  • userName: treats the field value as a userNname, and ignores any host-specific data. This is useful for environment using Kerberos, so that only the principal name and realm are compared.
The following is the list of fields that can be used to compare Hive events:
  • username: the user performing the action.
  • ipAddress: the IP from where the request originated.
  • operation: the Hive operation being performed.
  • databaseName: the database affected by the operation.
  • tableName: the table affected by the operation.
 navigator_event_tracker navigator_event_tracker false

Hive Metastore Database

Display Name Description Related Name Default Value API Name Required
Auto Create and Upgrade Hive Metastore Database Schema Automatically create or upgrade tables in the Hive Metastore database when needed. Consider setting this to false and managing the schema manually. datanucleus.autoCreateSchema false hive_metastore_database_auto_create_schema false
Hive Metastore Database DataNucleus Metadata Validation Perform DataNucleus validation of metadata during startup. Note: when enabled, Hive will log DataNucleus warnings even though Hive will function normally. datanucleus.metadata.validate false hive_metastore_database_datanucleus_metadata_validation false
Fixed Datastore Disallow any implicit schema changes in the Hive Metastore database via DataNucleus. datanucleus.fixedDatastore true hive_metastore_database_fixed_datastore false
Hive Metastore Database Host Host name of Hive Metastore database localhost hive_metastore_database_host false
Hive Metastore Database Name Name of Hive Metastore database metastore hive_metastore_database_name false
Hive Metastore Database Password Password for Hive Metastore database javax.jdo.option.ConnectionPassword hive_metastore_database_password false
Hive Metastore Database Port Port number of Hive Metastore database 3306 hive_metastore_database_port false
Hive Metastore Database Type Type of Hive Metastore database. Note that Derby is not recommended and Cloudera Impala does not support Derby. mysql hive_metastore_database_type false
Hive Metastore Database User User for Hive Metastore database javax.jdo.option.ConnectionUserName hive hive_metastore_database_user false
Hive Metastore Derby Path Directory name where Hive Metastore's database is stored (only for Derby) /var/lib/hive/cloudera_manager/derby/metastore_db hive_metastore_derby_path false

Logs

Display Name Description Related Name Default Value API Name Required
Audit Log Directory Path to the directory where audit logs will be written. The directory will be created if it doesn't exist. audit_event_log_dir /var/log/hive/audit audit_event_log_dir false
Number of Audit Logs to Retain Maximum number of rolled over audit logs to retain. The logs will not be deleted if they contain audit events that have not yet been propagated to Audit Server. navigator.audit_log_max_backup_index 10 navigator_audit_log_max_backup_index false
Maximum Audit Log File Size Maximum size of audit log file in MB before it is rolled over. navigator.audit_log_max_file_size 100 MiB navigator_audit_log_max_file_size false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Service Level Health Alerts When set, Cloudera Manager will send alerts when the health of this service reaches the threshold specified by the EventServer setting eventserver_health_events_alert_threshold true enable_alerts false
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false
Healthy Hive Metastore Server Monitoring Thresholds The health test thresholds of the overall Hive Metastore Server health. The check returns "Concerning" health if the percentage of "Healthy" Hive Metastore Servers falls below the warning threshold. The check is unhealthy if the total percentage of "Healthy" and "Concerning" Hive Metastore Servers falls below the critical threshold. Warning: 99.0 %, Critical: 51.0 % hive_hivemetastores_healthy_thresholds false
Healthy HiveServer2 Monitoring Thresholds The health test thresholds of the overall HiveServer2 health. The check returns "Concerning" health if the percentage of "Healthy" HiveServer2s falls below the warning threshold. The check is unhealthy if the total percentage of "Healthy" and "Concerning" HiveServer2s falls below the critical threshold. Warning: 99.0 %, Critical: 51.0 % hive_hiveserver2s_healthy_thresholds false
Healthy WebHCat Server Monitoring Thresholds The health test thresholds of the overall WebHCat Server health. The check returns "Concerning" health if the percentage of "Healthy" WebHCat Servers falls below the warning threshold. The check is unhealthy if the total percentage of "Healthy" and "Concerning" WebHCat Servers falls below the critical threshold. Warning: 99.0 %, Critical: 51.0 % hive_webhcats_healthy_thresholds false
Service Triggers The configured triggers for this service. This is a JSON formatted list of triggers. These triggers are evaluated as part as the health system. Every trigger expression is parsed, and if the trigger condition is met, the list of actions provided in the trigger expression is executed.Each trigger has all of the following fields:
  • triggerName (mandatory) - the name of the trigger. This value must be unique for the specific service.
  • triggerExpression (mandatory) - a tsquery expression representing the trigger.
  • streamThreshold (optional) - the maximum number of streams that can satisfy a condition of a trigger before the condition fires. By default set to 0, and any stream returned will cause the condition to fire.
  • enabled (optional) - by default set to 'true'. If set to 'false' the trigger will not be evaluated.
For example, here is a JSON formatted trigger that fires if there are more than 10 DataNodes with more than 500 file-descriptors opened:
[{"triggerName": "sample-trigger",
  "triggerExpression": "IF (SELECT fd_open WHERE roleType = DataNode and last(fd_open) > 500) DO health:bad",
  "streamThreshold": 10, "enabled": "true"}]
Consult the trigger rules documentation for more details on how to write triggers using tsquery.The JSON format is evolving and may change in the future and as a result backward compatibility is not guaranteed between releases at this time.		 [] service_triggers true
Service Monitor Client Config Overrides For advanced use only, a list of configuration properties that will be used by the Service Monitor instead of the current client configuration for the service. <property><name>hive.metastore.client.socket.timeout</name><value>20</value></property> smon_client_config_overrides false
Service Monitor Derived Configs Advanced Configuration Snippet (Safety Valve) For advanced use only, a list of derived configuration properties that will be used by the Service Monitor instead of the default ones. smon_derived_configs_safety_valve false

Other

Display Name Description Related Name Default Value API Name Required
Hive Bytes Per Reducer Size per reducer. If the input size is 10GiB and this is set to 1GiB, Hive will use 10 reducers. hive.exec.reducers.bytes.per.reducer 1 GiB hive_bytes_per_reducer false
Hive Max Reducers Max number of reducers to use. If the configuration parameter Hive Reduce Tasks is negative, Hive will limit the number of reducers to the value of this parameter. hive.exec.reducers.max 999 hive_max_reducers false
Hive Reduce Tasks Default number of reduce tasks per job. Usually set to a prime number close to the number of available hosts. Ignored when mapred.job.tracker is "local". Hadoop sets this to 1 by default, while Hive uses -1 as the default. When set to -1, Hive will automatically determine an appropriate number of reducers for each job. mapred.reduce.tasks -1 hive_reduce_tasks false
Set User and Group Information In unsecure mode, setting this property to true will cause the Metastore Server to execute DFS operations using the client's reported user and group permissions. Cloudera Manager will set this for all clients and servers. hive.metastore.execute.setugi true hive_set_ugi true
Hive Warehouse Directory Hive warehouse directory is the location in HDFS where Hive's tables are stored. Note that Hive's default value for its warehouse directory is '/user/hive/warehouse'. hive.metastore.warehouse.dir /user/hive/warehouse hive_warehouse_directory false
Hive Warehouse Subdirectories Inherit Permissions Let the table directories inherit the permission of the Warehouse or Database directory instead of being created with the permissions derived from dfs umask. This allows Impala to insert into tables created via Hive. hive.warehouse.subdir.inherit.perms true hive_warehouse_subdir_inherit_perms true
MapReduce Service MapReduce jobs are run against this service. mapreduce_yarn_service true
ZooKeeper Service Name of the ZooKeeper service that this Hive service instance depends on. zookeeper_service false

Policy File Based Sentry

Display Name Description Related Name Default Value API Name Required
Sentry User to Group Mapping Class The class to use in Sentry authorization for user to group mapping. Sentry authorization may be configured to use either Hadoop user to group mapping or local groups defined in the policy file. Hadoop user to group mapping may be configured in the Cloudera Manager HDFS service configuration page under the Security section. hive.sentry.provider org.apache.sentry.provider.file.HadoopGroupResourceAuthorizationProvider hive_sentry_provider false
Sentry Global Policy File HDFS path to the global policy file for Sentry authorization. This should be a relative path (and not a full HDFS URL). The global policy file must be in Sentry policy file format. hive.sentry.provider.resource /user/hive/sentry/sentry-provider.ini hive_sentry_provider_resource false
Enable Sentry Authorization using Policy Files Use Sentry to enable role-based, fine-grained authorization. This configuration enables Sentry using policy files. To enable Sentry using Sentry service instead, add Sentry service as a dependency to Hive service. Sentry service provides concurrent and secure access to authorization policy metadata and is the recommended option for enabling Sentry. Sentry is supported only on CDH 4.4 or later deployments. Before enabling Sentry, read the requirements and configuration steps outlined in Setting Up Hive Authorization with Sentry. hive.sentry.enabled false sentry_enabled false

Proxy

Display Name Description Related Name Default Value API Name Required
Oozie Proxy User Groups Comma-delimited list of groups that you want to allow the Oozie user to impersonate. The default '*' allows all groups. To disable entirely, use a string that doesn't correspond to a group name, such as '_no_group_'. hadoop.proxyuser.oozie.groups * oozie_proxy_user_groups_list false
Oozie Proxy User Hosts Comma-delimited list of hosts where you want to allow the Oozie user to impersonate other users. The default '*' allows all hosts. To disable entirely, use a string that doesn't correspond to a host name, such as '_no_host'. hadoop.proxyuser.oozie.hosts * oozie_proxy_user_hosts_list false

Security

Display Name Description Related Name Default Value API Name Required
Enable SSL for HiveServer Enable support for encrypted client-server communication using Secure Socket Layer (SSL) for HiveServer2 connections. This is only applicable to non-Kerberos environments. hive.server2.enable.SSL false hiveserver2_enable_ssl false
Keystore Password SSL keystore password. hive.server2.keystore.password hiveserver2_keystore_password false
Keystore File Path Path to the SSL keystore. hive.server2.keystore.path hiveserver2_keystore_path false

WebHCat Server Default Group

Advanced

Display Name Description Related Name Default Value API Name Required
WebHCat Server Advanced Configuration Snippet (Safety Valve) for webhcat-site.xml For advanced use only, a string to be inserted into webhcat-site.xml for this role only. hive_webhcat_config_safety_valve false
WebHCat Server Environment Advanced Configuration Snippet (Safety Valve) For advanced use only, key-value pairs (one on each line) to be inserted into a role's environment. Applies to configurations of this role except client configuration. hive_webhcat_env_safety_valve false
WebHCat Server Advanced Configuration Snippet (Safety Valve) for hive-site.xml For advanced use only, a string to be inserted into hive-site.xml for this role only. hive_webhcat_hive_config_safety_valve false
Java Configuration Options for WebHCat Server These arguments will be passed as part of the Java command line. Commonly, garbage collection flags or extra debugging flags would be passed here. -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:-CMSConcurrentMTEnabled -XX:CMSInitiatingOccupancyFraction=70 -XX:+CMSParallelRemarkEnabled hive_webhcat_java_opts false
WebHCat Server Logging Advanced Configuration Snippet (Safety Valve) For advanced use only, a string to be inserted into log4j.properties for this role only. log4j_safety_valve false
Heap Dump Directory Path to directory where heap dumps are generated when java.lang.OutOfMemoryError error is thrown. This directory is automatically created if it doesn't exist. However, if this directory already exists, role user must have write access to this directory. If this directory is shared amongst multiple roles, it should have 1777 permissions. Note that the heap dump files are created with 600 permissions and are owned by the role user. The amount of free space in this directory should be greater than the maximum Java Process heap size configured for this role. /tmp oom_heap_dump_dir false
Dump Heap When Out of Memory When set, generates heap dump file when java.lang.OutOfMemoryError is thrown. false oom_heap_dump_enabled true
Kill When Out of Memory When set, a SIGKILL signal is sent to the role process when java.lang.OutOfMemoryError is thrown. true oom_sigkill_enabled true
Automatically Restart Process When set, this role's process is automatically (and transparently) restarted in the event of an unexpected failure. false process_auto_restart true

Logs

Display Name Description Related Name Default Value API Name Required
WebHCat Server Logging Threshold The minimum log level for WebHCat Server logs INFO log_threshold false
WebHCat Server Maximum Log File Backups The maximum number of rolled log files to keep for WebHCat Server logs. Typically used by log4j. 10 max_log_backup_index false
WebHCat Server Max Log Size The maximum size, in megabytes, per log file for WebHCat Server logs. Typically used by log4j. 200 MiB max_log_size false

Monitoring

Display Name Description Related Name Default Value API Name Required
Enable Health Alerts for this Role When set, Cloudera Manager will send alerts when the health of this role reaches the threshold specified by the EventServer setting eventserver_health_events_alert_threshold true enable_alerts false
Enable Configuration Change Alerts When set, Cloudera Manager will send alerts when this entity's configuration changes. false enable_config_alerts false
Log Directory Free Space Monitoring Absolute Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Warning: 10 GiB, Critical: 5 GiB log_directory_free_space_absolute_thresholds false
Log Directory Free Space Monitoring Percentage Thresholds The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Log Directory Free Space Monitoring Absolute Thresholds setting is configured. Warning: Never, Critical: Never log_directory_free_space_percentage_thresholds false
Role Triggers The configured triggers for this role. This is a JSON formatted list of triggers. These triggers are evaluated as part as the health system. Every trigger expression is parsed, and if the trigger condition is met, the list of actions provided in the trigger expression is executed.Each trigger has all of the following fields:
  • triggerName (mandatory) - the name of the trigger. This value must be unique for the specific role.
  • triggerExpression (mandatory) - a tsquery expression representing the trigger.
  • streamThreshold (optional) - the maximum number of streams that can satisfy a condition of a trigger before the condition fires. By default set to 0, and any stream returned will cause the condition to fire.
  • enabled (optional) - by default set to 'true'. If set to 'false' the trigger will not be evaluated.
For example, here is a JSON formatted trigger configured for a DataNode that fires if the DataNode has more than 1500 file-descriptors opened:
[{"triggerName": "sample-trigger",
  "triggerExpression": "IF (SELECT fd_open WHERE roleName=$ROLENAME and last(fd_open) > 1500) DO health:bad",
  "streamThreshold": 0, "enabled": "true"}]
Consult the trigger rules documentation for more details on how to write triggers using tsquery.The JSON format is evolving and may change in the future and as a result backward compatibility is not guaranteed between releases at this time.		 [] role_triggers true
Unexpected Exits Thresholds The health test thresholds for unexpected exits encountered within a recent period specified by the unexpected_exits_window configuration for the role. Warning: Never, Critical: Any unexpected_exits_thresholds false
Unexpected Exits Monitoring Period The period to review when computing unexpected exits. 5 minute(s) unexpected_exits_window false
File Descriptor Monitoring Thresholds The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit. Warning: 50.0 %, Critical: 70.0 % webhcat_fd_thresholds false
WebHCat Server Host Health Test When computing the overall WebHCat Server health, consider the host's health. true webhcat_host_health_enabled false
WebHCat Server Process Health Test Enables the health test that the WebHCat Server's process state is consistent with the role configuration true webhcat_scm_health_enabled false

Other

Display Name Description Related Name Default Value API Name Required
WebHCat Server Log Directory Directory where WebHCat Server will place its log files. /var/log/hcatalog hcatalog_log_dir false

Performance

Display Name Description Related Name Default Value API Name Required
Maximum Process File Descriptors If configured, overrides the process soft and hard rlimits (also called ulimits) for file descriptors to the configured value. rlimit_fds false

Ports and Addresses

Display Name Description Related Name Default Value API Name Required
WebHCat Server Port Port on which WebHCat Server will listen for connections. templeton.port 50111 hive_webhcat_address_port false

Resource Management

Display Name Description Related Name Default Value API Name Required
Java Heap Size of WebHCat Server in Bytes Maximum size in bytes for the Java Process heap memory. Passed to Java -Xmx. 256 MiB hive_webhcat_java_heapsize false
Cgroup CPU Shares Number of CPU shares to assign to this role. The greater the number of shares, the larger the share of the host's CPUs that will be given to this role when the host experiences CPU contention. Must be between 2 and 262144. Defaults to 1024 for processes not managed by Cloudera Manager. cpu.shares 1024 rm_cpu_shares true
Cgroup I/O Weight Weight for the read I/O requests issued by this role. The greater the weight, the higher the priority of the requests when the host experiences I/O contention. Must be between 100 and 1000. Defaults to 1000 for processes not managed by Cloudera Manager. blkio.weight 500 rm_io_weight true
Cgroup Memory Hard Limit Hard memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.limit_in_bytes -1 MiB rm_memory_hard_limit true
Cgroup Memory Soft Limit Soft memory limit to assign to this role, enforced by the Linux kernel. When the limit is reached, the kernel will reclaim pages charged to the process if and only if the host is facing memory pressure. If reclaiming fails, the kernel may kill the process. Both anonymous as well as page cache pages contribute to the limit. Use a value of -1 B to specify no limit. By default processes not managed by Cloudera Manager will have no limit. memory.soft_limit_in_bytes -1 MiB rm_memory_soft_limit true
Page generated September 3, 2015.