Impala Catalog Server Health Tests
Impala Catalog Server Audit Pipeline Test
This Impala Catalog Server health test checks that the Auditing for the Impala Catalog Server role is getting processed correctly and is not blocked. A failure of this health test may indicate a problem with the audit pipeline of Impala Catalog Server process. This test can fail either because the Cloudera Audit Server is not accepting audits, or the Cloudera Manager Agent on the Impala Catalog Server host isn't able to send audits because of some network issue. Check the Cloudera Manager Agent logs and Cloudera Audit Server logs for more details. This test can be enabled or disabled using the Navigator Audit Pipeline Health Check Impala Catalog Server monitoring setting.
Short Name: Audit Pipeline Test
Monitoring Period For Audit Failures
- Description
- The period to review when checking if audits are blocked and not getting processed.
- Template Name
- mgmt_navigator_failure_window
- Default Value
- 20
- Unit(s)
- MINUTES
Navigator Audit Failure Thresholds
- Description
- The health test thresholds for failures encountered when monitoring audits within a recent period specified by the mgmt_navigator_failure_window configuration for the role. The value that can be specified for this threshold is the number of bytes of audits data that is left to be sent to audit server.
- Template Name
- mgmt_navigator_failure_thresholds
- Default Value
- critical:any, warning:never
- Unit(s)
- BYTES
Navigator Audit Pipeline Health Check
- Description
- Enable test of audit events processing pipeline. This will test if audit events are not getting processed by Audit Server for a role that generates audit.
- Template Name
- mgmt_navigator_status_check_enabled
- Default Value
- true
- Unit(s)
- no unit
Impala Catalog Server File Descriptors
This Impala Catalog Server health test checks that the number of file descriptors used does not rise above some percentage of the Impala Catalog Server file descriptor limit. A failure of this health test may indicate a bug in either Hadoop or Cloudera Manager. Contact Cloudera support. This test can be configured using the File Descriptor Monitoring Thresholds Impala Catalog Server monitoring setting.
Short Name: File Descriptors
File Descriptor Monitoring Thresholds
- Description
- The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit.
- Template Name
- catalogserver_fd_thresholds
- Default Value
- critical:70.0, warning:50.0
- Unit(s)
- PERCENT
Impala Catalog Server Heap Dump Directory Free Space
This Impala Catalog Server health test checks that the filesystem containing the heap dump directory of this Impala Catalog Server has sufficient free space. This test can be configured using the Heap Dump Directory Free Space Monitoring Absolute Thresholds and Heap Dump Directory Free Space Monitoring Percentage Thresholds Impala Catalog Server monitoring settings.
Short Name: Heap Dump Directory Free Space
Heap Dump Directory Free Space Monitoring Absolute Thresholds
- Description
- The health test thresholds for monitoring of free space on the filesystem that contains this role's heap dump directory.
- Template Name
- heap_dump_directory_free_space_absolute_thresholds
- Default Value
- critical:5.36870912E9, warning:1.073741824E10
- Unit(s)
- BYTES
Heap Dump Directory Free Space Monitoring Percentage Thresholds
- Description
- The health test thresholds for monitoring of free space on the filesystem that contains this role's heap dump directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Heap Dump Directory Free Space Monitoring Absolute Thresholds setting is configured.
- Template Name
- heap_dump_directory_free_space_percentage_thresholds
- Default Value
- critical:never, warning:never
- Unit(s)
- PERCENT
Impala Catalog Server Host Health
This Impala Catalog Server health test factors in the health of the host upon which the Impala Catalog Server is running. A failure of this test means that the host running the Impala Catalog Server is experiencing some problem. See that host's status page for more details.This test can be enabled or disabled using the Impala Catalog Server Host Health Test Impala Catalog Server monitoring setting.
Short Name: Host Health
Impala Catalog Server Host Health Test
- Description
- When computing the overall Impala Catalog Server health, consider the host's health.
- Template Name
- catalogserver_host_health_enabled
- Default Value
- true
- Unit(s)
- no unit
Impala Catalog Server Log Directory Free Space
This Impala Catalog Server health test checks that the filesystem containing the log directory of this Impala Catalog Server has sufficient free space. This test can be configured using the Log Directory Free Space Monitoring Absolute Thresholds and Log Directory Free Space Monitoring Percentage Thresholds Impala Catalog Server monitoring settings.
Short Name: Log Directory Free Space
Log Directory Free Space Monitoring Absolute Thresholds
- Description
- The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory.
- Template Name
- log_directory_free_space_absolute_thresholds
- Default Value
- critical:5.36870912E9, warning:1.073741824E10
- Unit(s)
- BYTES
Log Directory Free Space Monitoring Percentage Thresholds
- Description
- 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.
- Template Name
- log_directory_free_space_percentage_thresholds
- Default Value
- critical:never, warning:never
- Unit(s)
- PERCENT
Impala Catalog Server Process Status
This Impala Catalog Server health test checks that the Cloudera Manager Agent on the Impala Catalog Server host is heart beating correctly and that the process associated with the Impala Catalog Server role is in the state expected by Cloudera Manager. A failure of this health test may indicate a problem with the Impala Catalog Server process, a lack of connectivity to the Cloudera Manager Agent on the Impala Catalog Server host, or a problem with the Cloudera Manager Agent. This test can fail either because the Impala Catalog Server has crashed or because the Impala Catalog Server will not start or stop in a timely fashion. Check the Impala Catalog Server logs for more details. If the test fails because of problems communicating with the Cloudera Manager Agent on the Impala Catalog Server host, check the status of the Cloudera Manager Agent by running /etc/init.d/cloudera-scm-agent status on the Impala Catalog Server host, or look in the Cloudera Manager Agent logs on the Impala Catalog Server host for more details. This test can be enabled or disabled using the Impala Catalog Server Process Health Test Impala Catalog Server monitoring setting.
Short Name: Process Status
Impala Catalog Server Process Health Test
- Description
- Enables the health test that the Impala Catalog Server's process state is consistent with the role configuration
- Template Name
- catalogserver_scm_health_enabled
- Default Value
- true
- Unit(s)
- no unit
Impala Catalog Server Resident Set Size
This Impala Catalog Server health test checks that the size of the resident set does not rise above a configured threshold value. A failure of this health test may indicates that the Impala Catalog Server process is consuming more memory than expected. It is possible that that unexpected memory consumption may lead to swapping and decreased performance for processes running on the same host as this Impala Catalog Server. Increased Impala Catalog Server memory consumption may be caused by an increased workload on the Impala service, or by a bug in the Impala Catalog Server software. To avoid failures of this health test, free up additional memory for this Impala Catalog Server process and increase the Resident Set Size Thresholds monitoring setting. This test can be configured using the Resident Set Size Thresholds Impala Catalog Server monitoring setting.
Short Name: Resident Set Size
Resident Set Size Thresholds
- Description
- The health test thresholds on the resident size of the process.
- Template Name
- process_resident_set_size_thresholds
- Default Value
- critical:never, warning:never
- Unit(s)
- BYTES
Impala Catalog Server StateStore Connectivity
This is a Catalog Server health test that checks whether the StateStore considers the Catalog Server alive. A failure of this health test may indicate that the Catalog Server is having trouble communicating with the StateStore. Look in the Catalog Server logs for more details. This test may return an unknown result if the Service Monitor is not able to communicate with the StateStore web server. Check the status of the StateStore web server and the Service Monitor logs if this test is returning an unknown result. This test can be enabled or disabled using the Catalog Server Connectivity Health Test Catalog Server monitoring setting. The Catalog Server Connectivity Tolerance at Startup Catalog Server monitoring setting and the Health Test Startup Tolerance StateStore monitoring setting can be used to control the test's tolerance windows around Catalog Server and StateStore restarts respectively.
Short Name: StateStore Connectivity
Catalog Server Connectivity Health Test
- Description
- Enables the health test that verifies the Catalog Server is connected to the StateStore
- Template Name
- catalogserver_connectivity_health_enabled
- Default Value
- true
- Unit(s)
- no unit
Catalog Server Connectivity Tolerance at Startup
- Description
- The amount of time to wait for the Catalog Server to fully start up and connect to the StateStore before enforcing the connectivity check.
- Template Name
- catalogserver_connectivity_tolerance
- Default Value
- 180
- Unit(s)
- SECONDS
Health Test Startup Tolerance
- Description
- The amount of time allowed after this role is started that failures of health tests that rely on communication with this role will be tolerated.
- Template Name
- statestore_startup_tolerance
- Default Value
- 5
- Unit(s)
- MINUTES
Impala Catalog Server Swap Memory Usage
This Impala Catalog Server health test checks the amount of swap memory in use by the role. A failure of this health test may indicate that your machine is overloaded. This test can be configured using the Process Swap Memory Thresholds monitoring settings.
Short Name: Swap Memory Usage
Process Swap Memory Thresholds
- Description
- The health test thresholds on the swap memory usage of the process. This takes precedence over the host level threshold.
- Template Name
- process_swap_memory_thresholds
- Default Value
- critical:never, warning:200.0
- Unit(s)
- BYTES
Impala Catalog Server Unexpected Exits
This Impala Catalog Server health test checks that the Impala Catalog Server has not recently exited unexpectedly. The test returns "Bad" health if the number of unexpected exits exceeds a critical threshold. For example, if this test is configured with a critical threshold of 1, this test returns "Good" health if there have been no unexpected exits recently. If 1 or more unexpected exits occured recently, this test returns "Bad" health. The test also indicates whether any of the exits were caused by an OutOfMemory error if the Cloudera Manager Kill When Out of Memory monitoring setting is enabled. This test can be configured using the Unexpected Exits Thresholds and Unexpected Exits Monitoring Period Impala Catalog Server monitoring settings.
Short Name: Unexpected Exits
Unexpected Exits Monitoring Period
- Description
- The period to review when computing unexpected exits.
- Template Name
- unexpected_exits_window
- Default Value
- 5
- Unit(s)
- MINUTES
Unexpected Exits Thresholds
- Description
- The health test thresholds for unexpected exits encountered within a recent period specified by the unexpected_exits_window configuration for the role.
- Template Name
- unexpected_exits_thresholds
- Default Value
- critical:any, warning:never
- Unit(s)
- no unit
Impala Catalog Server Web Server Status
This health test checks that the role's web server is responding quickly to requests by the Cloudera Manager Agent, and that the Cloudera Manager Agent can collect metrics from the web server. Failure of this health test may indicate a problem with the web server of the Impala Catalog Server, a misconfiguration of the Impala Catalog Server, or a problem with the Cloudera Manager Agent. Consult the Cloudera Manager Agent logs and the logs of the Impala Catalog Server for more detail. If the test failure message indicates a communication problem, the Cloudera Manager Agent's HTTP requests to the Impala Catalog Server's web server are failing or timing out. If the test's failure message indicates an unexpected response, the Impala Catalog Server's web server responded to the Cloudera Manager Agent's request, but the response could not be interpreted for some reason. This test can be configured using the Web Metric Collection Impala Catalog Server monitoring setting.
Short Name: Web Server Status
Web Metric Collection
- Description
- Enables the health test that the Cloudera Manager Agent can successfully contact and gather metrics from the web server.
- Template Name
- catalogserver_web_metric_collection_enabled
- Default Value
- true
- Unit(s)
- no unit
Web Metric Collection Duration
- Description
- The health test thresholds on the duration of the metrics request to the web server.
- Template Name
- catalogserver_web_metric_collection_thresholds
- Default Value
- critical:never, warning:10000.0
- Unit(s)
- MILLISECONDS
