LLAP Proxy Health Tests
LLAP Proxy Audit Pipeline Test
This LLAP Proxy health test checks that the Auditing for the LLAP Proxy role is getting processed correctly and is not blocked. A failure of this health test may indicate a problem with the audit pipeline of LLAP Proxy process. This test can fail either because the Cloudera Audit Server is not accepting audits, or the Cloudera Manager Agent on the LLAP Proxy 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 LLAP Proxy 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
LLAP Proxy File Descriptors
This LLAP Proxy health test checks that the number of file descriptors used does not rise above some percentage of the LLAP Proxy 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 LLAP Proxy 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
- llapproxy_fd_thresholds
- Default Value
- critical:70.0, warning:50.0
- Unit(s)
- PERCENT
LLAP Proxy Heap Dump Directory Free Space
This LLAP Proxy health test checks that the filesystem containing the heap dump directory of this LLAP Proxy 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 LLAP Proxy 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
LLAP Proxy Host Health
This LLAP Proxy health test factors in the health of the host upon which the LLAP Proxy is running. A failure of this test means that the host running the LLAP Proxy is experiencing some problem. See that host's status page for more details.This test can be enabled or disabled using the LLAP Proxy Host Health Test LLAP Proxy monitoring setting.
Short Name: Host Health
LLAP Proxy Host Health Test
- Description
- When computing the overall LLAP Proxy health, consider the host's health.
- Template Name
- llapproxy_host_health_enabled
- Default Value
- true
- Unit(s)
- no unit
LLAP Proxy LLAP Daemons Ready Check
This is an LLAP daemons health test that checks whether LLAP daemons are ready to process queries. This test can be configured using the LLAP Proxy and Hive LLAP Daemons Ready Status Thresholds llap_proxy monitoring settings.
Short Name: LLAP Daemons Ready Check
Hive LLAP Daemons Ready Status Startup Tolerance
- Description
- Bad health state will be shown if, after this amount of time (after starting LLAP proxy role), 0 LLAP daemons are running.
- Template Name
- llapd_ready_status_check_daemon_startup_tolerance
- Default Value
- 300
- Unit(s)
- SECONDS
Hive LLAP Daemons Ready Status Thresholds
- Description
- The health test thresholds for monitoring the number of active LLAP daemons.
- Template Name
- llapd_ready_status_thresholds
- Default Value
- critical:25.0, warning:75.0
- Unit(s)
- no unit
Hive LLAP Proxy Role Ready Status Startup Tolerance
- Description
- Startup Tolerance time of the LLAP proxy role in which no health test is run. This is recommended to be kept minimal.
- Template Name
- llapd_ready_status_check_role_startup_tolerance
- Default Value
- 1
- Unit(s)
- SECONDS
LLAP Proxy Log Directory Free Space
This LLAP Proxy health test checks that the filesystem containing the log directory of this LLAP Proxy 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 LLAP Proxy 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
LLAP Proxy Pause Duration
This LLAP Proxy health test checks that the LLAP Proxy threads are not experiencing long scheduling pauses. The test uses a pause monitoring thread in the LLAP Proxy that tracks scheduling delay by noting if it is run on its requested schedule. If the thread is not run on its requested schedule, the delay is noted and considered pause time. The health test checks that no more than some percentage of recent time is spent paused. A failure of this health test may indicate that the LLAP Proxy is not getting enough CPU resources, or that it is spending too much time doing garbage collection. Inspect the LLAP Proxy logs for any pause monitor output and check garbage collection metrics exposed by the LLAP Proxy. This test can be configured using the Pause Duration Thresholds and Pause Duration Monitoring Period LLAP Proxy monitoring settings.
Short Name: Pause Duration
Pause Duration Monitoring Period
- Description
- The period to review when computing the moving average of extra time the pause monitor spent paused.
- Template Name
- llapproxy_pause_duration_window
- Default Value
- 5
- Unit(s)
- MINUTES
Pause Duration Thresholds
- Description
- The health test thresholds for the weighted average extra time the pause monitor spent paused. Specified as a percentage of elapsed wall clock time.
- Template Name
- llapproxy_pause_duration_thresholds
- Default Value
- critical:60.0, warning:30.0
- Unit(s)
- no unit
LLAP Proxy Process Status
This LLAP Proxy health test checks that the Cloudera Manager Agent on the LLAP Proxy host is heart beating correctly and that the process associated with the LLAP Proxy role is in the state expected by Cloudera Manager. A failure of this health test may indicate a problem with the LLAP Proxy process, a lack of connectivity to the Cloudera Manager Agent on the LLAP Proxy host, or a problem with the Cloudera Manager Agent. This test can fail either because the LLAP Proxy has crashed or because the LLAP Proxy will not start or stop in a timely fashion. Check the LLAP Proxy logs for more details. If the test fails because of problems communicating with the Cloudera Manager Agent on the LLAP Proxy host, check the status of the Cloudera Manager Agent by running /etc/init.d/cloudera-scm-agent status on the LLAP Proxy host, or look in the Cloudera Manager Agent logs on the LLAP Proxy host for more details. This test can be enabled or disabled using the LLAP Proxy Process Health Test LLAP Proxy monitoring setting.
Short Name: Process Status
LLAP Proxy Process Health Test
- Description
- Enables the health test that the LLAP Proxy's process state is consistent with the role configuration
- Template Name
- llapproxy_scm_health_enabled
- Default Value
- true
- Unit(s)
- no unit
LLAP Proxy Swap Memory Usage
This LLAP Proxy 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
LLAP Proxy Unexpected Exits
This LLAP Proxy health test checks that the LLAP Proxy 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 LLAP Proxy 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
