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https://issues.apache.org/jira/browse/HDFS-16380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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zy.jordan updated HDFS-16380:
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Language: java
> Result in unnecessary requeue on Observer NameNode when access by RBF in some
> scenes
> ------------------------------------------------------------------------------------
>
> Key: HDFS-16380
> URL: https://issues.apache.org/jira/browse/HDFS-16380
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: rbf
> Affects Versions: 3.3.1
> Reporter: zy.jordan
> Priority: Major
> Fix For: 3.3.1
>
> Original Estimate: 40h
> Remaining Estimate: 40h
>
> As HDFS-13522 introduced, user can access Observer NameNode by RBF. But it
> will result in Extra requeue on Observer side, because RBF maintain an global
> alignContext for each namespace. When a call go ANN, it update stateId in
> alignContext instead of msync time arrived, and it will requeue on ONN side.
> In some scenes (eg, Adhoc query), it is unnecessary.
> Separate alignContext for different scenes, for example
> AlignContext-A(msync:5s) for adhoc, AlignContext-B(msync:0s) for ETL. Maybe
> it can reduce requeue time on ONN.
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