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Posted to hdfs-issues@hadoop.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2022/06/24 06:47:00 UTC
[jira] [Work logged] (HDFS-16641) [HDFS] Add RPC ReQueue Metrics
[ https://issues.apache.org/jira/browse/HDFS-16641?focusedWorklogId=784432&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-784432 ]
ASF GitHub Bot logged work on HDFS-16641:
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Author: ASF GitHub Bot
Created on: 24/Jun/22 06:46
Start Date: 24/Jun/22 06:46
Worklog Time Spent: 10m
Work Description: ZanderXu opened a new pull request, #4496:
URL: https://github.com/apache/hadoop/pull/4496
### Description of PR
In our prod environment, Observer NameNode also have high QueueTime, but ProcessingTime is low.
After tracing and found the root cause is Rpc ReQueue.
So I thinks we should add a metric to quantify the number of reQueueRpc. And It will be helpfully for us to locate this abnormal case.
Issue Time Tracking
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Worklog Id: (was: 784432)
Remaining Estimate: 0h
Time Spent: 10m
> [HDFS] Add RPC ReQueue Metrics
> ------------------------------
>
> Key: HDFS-16641
> URL: https://issues.apache.org/jira/browse/HDFS-16641
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: ZanderXu
> Assignee: ZanderXu
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Add RPC ReQueue Metrics to easily locate the abnormal case that ObserverNameNode has lower RPCProcessingTime and higher RPCQueueTime.
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