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Posted to hdfs-issues@hadoop.apache.org by "Nishtha Shah (Jira)" <ji...@apache.org> on 2023/05/30 06:17:00 UTC
[jira] [Commented] (HDFS-15491) Journal transactions batched in sync metrics are missing from Journal Node JMX
[ https://issues.apache.org/jira/browse/HDFS-15491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17727335#comment-17727335 ]
Nishtha Shah commented on HDFS-15491:
-------------------------------------
[~m@hit1994] [~jianghuazhu] [~rahulb-2000] If it is still unresolved, Is it fine If I pick it up?
> Journal transactions batched in sync metrics are missing from Journal Node JMX
> --------------------------------------------------------------------------------
>
> Key: HDFS-15491
> URL: https://issues.apache.org/jira/browse/HDFS-15491
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: 3.1.1, hdfs, journal-node, qjm
> Affects Versions: 3.1.1
> Reporter: Mohit Saindane
> Priority: Critical
> Labels: newbie, patch, pull-request-available
> Fix For: 3.1.1
>
> Attachments: JournalNode metrics issue.png
>
>
> I have enable the HA in HDP3.1.5 multinode cluster, I was trying to access the REST response given by Journal Node on http 8480 port, but as per [Apache Hadoop 3.1.1 Documentation|[https://hadoop.apache.org/docs/r3.1.1/hadoop-project-dist/hadoop-common/Metrics.html#JournalNode]] I found that some of the Journal Node specific metrics are missing. (metrics like NumTransactionsBatchedInSync_(60,300,3600)_sNumOps and NumTransactionsBatchedInSync_Num_s_(50/75/90/95/99)_thPercentileLatencyMicros), So checked the _JournalMetrics.java_ code given in _hadoop-hdfs-3.1.1.3.1.5.0-152-sources.jar_ as well as __ [Hadoop Open Source Code|[https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/qjournal/server/JournalMetrics.java]] found that the following code is missing :
>
> @Metric("Journal transactions batched in sync")
> final MutableQuantiles[] numTransactionsBatchedInSync;
>
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