LLAP Proxy Health Tests

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

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

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

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

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

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

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

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

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

This LLAP Proxy health test checks the change of the amount of swap memory usage by the role during a predefined period. A failure of this health test may indicate that your machine is overloaded. This test can be configured using the Swap Memory Usage Rate Thresholds and Swap Memory Usage Rate Window monitoring settings.

Short Name: Swap Memory Usage Rate Beta

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