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https://issues.apache.org/jira/browse/HDFS-17335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17805049#comment-17805049
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ASF GitHub Bot commented on HDFS-17335:
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hfutatzhanghb opened a new pull request, #6431:
URL: https://github.com/apache/hadoop/pull/6431
### Description of PR
See HDFS-17335.
To monitor syncWaitQ in FSEditLogAsync, we add a metric syncPendingCount.
The reason we add this metrics is that when dequeueEdit() return null, the
boolean variable doSync is set to !syncWaitQ.isEmpty() After adding this
metrics we can better monitor sync performance and codes.
> Add metrics for syncWaitQ in FSEditLogAsync
> -------------------------------------------
>
> Key: HDFS-17335
> URL: https://issues.apache.org/jira/browse/HDFS-17335
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 3.3.6
> Reporter: farmmamba
> Assignee: farmmamba
> Priority: Minor
>
> To monitor syncWaitQ in FSEditLogAsync, we add a metric syncPendingCount.
> The reason we add this metrics is that when dequeueEdit() return null, the
> boolean variable doSync is set to {color:#0747a6}+!syncWaitQ.isEmpty()+
> {color:#172b4d}After adding this metrics we can better monitor sync
> performance and codes.{color}{color}
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