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Posted to common-issues@hadoop.apache.org by GitBox <gi...@apache.org> on 2019/08/28 05:40:24 UTC

[GitHub] [hadoop] avijayanhwx opened a new pull request #1363: HDDS-1783 : Latency metric for applyTransaction in ContainerStateMach…

avijayanhwx opened a new pull request #1363: HDDS-1783 : Latency metric for applyTransaction in ContainerStateMach…
URL: https://github.com/apache/hadoop/pull/1363
 
 
   …ine.
   
   applyTransaction is invoked from the Ratis pipeline and the ContainerStateMachine uses a async executor to complete the task.
   
   We require a latency metric to track the performance of log apply operations in the state machine. This will measure the end-to-end latency of apply which includes the queueing delay in the executor queues. Combined with the latency measurement in HddsDispatcher, this will be an indicator if the executors are overloaded.

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