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https://issues.apache.org/jira/browse/HDFS-15616?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HDFS-15616:
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    Labels: pull-request-available  (was: )

> [SBN] Disable Observers to trigger edit log roll
> ------------------------------------------------
>
>                 Key: HDFS-15616
>                 URL: https://issues.apache.org/jira/browse/HDFS-15616
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs
>            Reporter: Janus Chow
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: HDFS-15616.001.patch
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Currently when Observer is transitioned from StandbyState, the editLogTailer 
> will still send the request to roll editLog to ActiveNN, which should be 
> disabled to keep the definition of "logRollPeriodMs" clear.
> One thing I'm not sure is for a cluster with multi standby Namenode, all the 
> standby NN will trigger the roll. Should this feature be extended to all 
> standby NNs or implementing on observers first?



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