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https://issues.apache.org/jira/browse/HBASE-16094?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Appy updated HBASE-16094:
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Attachment: HBASE-16094.master.004.patch
> Procedure v2 - Improve cleaning up of proc wals
> -----------------------------------------------
>
> Key: HBASE-16094
> URL: https://issues.apache.org/jira/browse/HBASE-16094
> Project: HBase
> Issue Type: Sub-task
> Components: proc-v2
> Reporter: Appy
> Assignee: Appy
> Fix For: 2.0.0
>
> Attachments: HBASE-16094.master.001.patch,
> HBASE-16094.master.002.patch, HBASE-16094.master.003.patch,
> HBASE-16094.master.004.patch
>
>
> Avoid accumulating too many wals.
> We remove logs in 3 cases:
> - No procedures are running. We can remove all the logs.
> - All procedures are updated/written in the last log. We can remove all the
> logs, aside the active one.
> - Remove log if does not contains “active” procIds
> https://github.com/apache/hbase/blob/master/hbase-procedure/src/main/java/org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureStore.java#L865
> The last point, Remove log if does not contains “active” procIds, needs to be
> improved. Basically, even if a log contains state of an active proc, we can
> delete it if a later log contains a newer state.
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