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Posted to hdfs-issues@hadoop.apache.org by "Weiwei Yang (JIRA)" <ji...@apache.org> on 2017/09/21 09:00:00 UTC
[jira] [Commented] (HDFS-12524) Ozone: Record number of keys
scanned and hinted for getRangeKVs call
[ https://issues.apache.org/jira/browse/HDFS-12524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16174465#comment-16174465 ]
Weiwei Yang commented on HDFS-12524:
------------------------------------
Marked it with merge label as this is pretty useful whiling debugging DB issues. Lets get this done before the merge.
> Ozone: Record number of keys scanned and hinted for getRangeKVs call
> --------------------------------------------------------------------
>
> Key: HDFS-12524
> URL: https://issues.apache.org/jira/browse/HDFS-12524
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: logging, ozone
> Reporter: Weiwei Yang
> Assignee: Weiwei Yang
> Priority: Minor
> Labels: ozoneMerge, performance
>
> Add debug logging to record number of keys scanned and hinted for {{getRangeKVs}} calls, this will be helpful to debug performance issues since {{getRangeKVs}} is often the place where we get the lag.
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