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Posted to hdfs-issues@hadoop.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2023/05/22 03:10:00 UTC
[jira] [Commented] (HDFS-16993) Datanode supports configure TopN DatanodeNetworkCounts
[ https://issues.apache.org/jira/browse/HDFS-16993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17724744#comment-17724744 ]
ASF GitHub Bot commented on HDFS-16993:
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hfutatzhanghb commented on PR #5597:
URL: https://github.com/apache/hadoop/pull/5597#issuecomment-1556455626
force push to fix checkstyle problems.
@ayushtkn Hi, sir. Could you please help me review this code and push this PR forward? Thanks a lot.
> Datanode supports configure TopN DatanodeNetworkCounts
> ------------------------------------------------------
>
> Key: HDFS-16993
> URL: https://issues.apache.org/jira/browse/HDFS-16993
> Project: Hadoop HDFS
> Issue Type: Wish
> Affects Versions: 3.3.5
> Reporter: farmmamba
> Priority: Major
> Labels: pull-request-available
>
> In our prod environment, we try to collect datanode metrics every 15s through jmx_exporter. we found the datanodenetworkerror metric generates a lot.
> for example, if we have a cluster with 1000 datanodes, every datanode may generate 999 datanodenetworkerror metrics, and overall datanodes will generate 1000 multiple 999 = 999000 metrics. This is a very expensive operation. In most scenarios, we only need the topN of it.
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