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https://issues.apache.org/jira/browse/HDFS-16617?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yongpan Liu updated HDFS-16617:
-------------------------------
Description:
Observer NN may have poor read performance due to various reasons (serious GC,
code problems, or txid lags behind, etc.).
Added latency monitoring with Active NN's txid to Observer NN to help us
troubleshoot some of the issues.
was:
Observer NN may of course have poor read performance due to various reasons
(serious GC, code problems, or txid lags behind, etc.).
Added latency monitoring with Active NN's txid to Observer NN to help us
troubleshoot some of the issues.
> [SBN read] add txid lag metric for Observer NameNode
> ----------------------------------------------------
>
> Key: HDFS-16617
> URL: https://issues.apache.org/jira/browse/HDFS-16617
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Reporter: Yongpan Liu
> Priority: Minor
>
> Observer NN may have poor read performance due to various reasons (serious
> GC, code problems, or txid lags behind, etc.).
> Added latency monitoring with Active NN's txid to Observer NN to help us
> troubleshoot some of the issues.
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