Impala Llama ApplicationMaster Health Tests
Impala Llama ApplicationMaster File Descriptors
This Impala Llama ApplicationMaster health test checks that the number of file descriptors used does not rise above some percentage of the Impala Llama ApplicationMaster 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 Llama ApplicationMaster monitoring setting.
Short Name: File Descriptors
Property Name | Description | Template Name | Default Value | Unit |
---|---|---|---|---|
File Descriptor Monitoring Thresholds | The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor limit. | llama_fd_thresholds | critical:70.0, warning:50.0 | PERCENT |
Impala Llama ApplicationMaster Heap Dump Directory Free Space
This Impala Llama ApplicationMaster health test checks that the filesystem containing the heap dump directory of this Impala Llama ApplicationMaster 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 Llama ApplicationMaster monitoring settings.
Short Name: Heap Dump Directory Free Space
Property Name | Description | Template Name | Default Value | Unit |
---|---|---|---|---|
Heap Dump Directory Free Space Monitoring Absolute Thresholds | The health test thresholds for monitoring of free space on the filesystem that contains this role's heap dump directory. | heap_dump_directory_free_space_absolute_thresholds | critical:5.36870912E9, warning:1.073741824E10 | BYTES |
Heap Dump Directory Free Space Monitoring Percentage Thresholds | 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. | heap_dump_directory_free_space_percentage_thresholds | critical:never, warning:never | PERCENT |
Impala Llama ApplicationMaster Host Health
This Impala Llama ApplicationMaster health test factors in the health of the host upon which the Impala Llama ApplicationMaster is running. A failure of this test means that the host running the Impala Llama ApplicationMaster is experiencing some problem. See that host's status page for more details.This test can be enabled or disabled using the Impala Llama ApplicationMaster Host Health Test Impala Llama ApplicationMaster monitoring setting.
Short Name: Host Health
Property Name | Description | Template Name | Default Value | Unit |
---|---|---|---|---|
Impala Llama ApplicationMaster Host Health Test | When computing the overall Impala Llama ApplicationMaster health, consider the host's health. | llama_host_health_enabled | true | no unit |
Impala Llama ApplicationMaster Log Directory Free Space
This Impala Llama ApplicationMaster health test checks that the filesystem containing the log directory of this Impala Llama ApplicationMaster 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 Llama ApplicationMaster monitoring settings.
Short Name: Log Directory Free Space
Property Name | Description | Template Name | Default Value | Unit |
---|---|---|---|---|
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. | log_directory_free_space_absolute_thresholds | critical:5.36870912E9, warning:1.073741824E10 | BYTES |
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. | log_directory_free_space_percentage_thresholds | critical:never, warning:never | PERCENT |
Impala Llama ApplicationMaster Process Status
This Impala Llama ApplicationMaster health test checks that the Cloudera Manager Agent on the Impala Llama ApplicationMaster host is heart beating correctly and that the process associated with the Impala Llama ApplicationMaster role is in the state expected by Cloudera Manager. A failure of this health test may indicate a problem with the Impala Llama ApplicationMaster process, a lack of connectivity to the Cloudera Manager Agent on the Impala Llama ApplicationMaster host, or a problem with the Cloudera Manager Agent. This test can fail either because the Impala Llama ApplicationMaster has crashed or because the Impala Llama ApplicationMaster will not start or stop in a timely fashion. Check the Impala Llama ApplicationMaster logs for more details. If the test fails because of problems communicating with the Cloudera Manager Agent on the Impala Llama ApplicationMaster host, check the status of the Cloudera Manager Agent by running /etc/init.d/cloudera-scm-agent status on the Impala Llama ApplicationMaster host, or look in the Cloudera Manager Agent logs on the Impala Llama ApplicationMaster host for more details. This test can be enabled or disabled using the Impala Llama ApplicationMaster Process Health Test Impala Llama ApplicationMaster monitoring setting.
Short Name: Process Status
Property Name | Description | Template Name | Default Value | Unit |
---|---|---|---|---|
Impala Llama ApplicationMaster Process Health Test | Enables the health test that the Impala Llama ApplicationMaster's process state is consistent with the role configuration | llama_scm_health_enabled | true | no unit |
Impala Llama ApplicationMaster Swap Memory Usage
This Impala Llama ApplicationMaster 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
Property Name | Description | Template Name | Default Value | Unit |
---|---|---|---|---|
Process Swap Memory Thresholds | The health test thresholds on the swap memory usage of the process. | process_swap_memory_thresholds | critical:never, warning:any | BYTES |
Impala Llama ApplicationMaster Unexpected Exits
This Impala Llama ApplicationMaster health test checks that the Impala Llama ApplicationMaster 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 Llama ApplicationMaster monitoring settings.
Short Name: Unexpected Exits
Property Name | Description | Template Name | Default Value | Unit |
---|---|---|---|---|
Unexpected Exits Monitoring Period | The period to review when computing unexpected exits. | unexpected_exits_window | 5 | MINUTES |
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. | unexpected_exits_thresholds | critical:any, warning:never | no unit |