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https://issues.apache.org/jira/browse/HBASE-22347?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Biju Nair updated HBASE-22347:
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Component/s: wal
regionserver
> try to archive WALs when closing a region or when shutting down RS
> ------------------------------------------------------------------
>
> Key: HBASE-22347
> URL: https://issues.apache.org/jira/browse/HBASE-22347
> Project: HBase
> Issue Type: Bug
> Components: regionserver, wal
> Reporter: Sergey Shelukhin
> Priority: Major
>
> When RS shuts down in an orderly manner due to an upgrade or decom, even it
> has 0 regions (discovered when testing HBASE-22254), it still dies with some
> active WALs.
> WALs are then split by master, and in the 0-region case the recovered edits
> are not used for anything. This splitting is a waste of time... if some
> region is moved away from the server it might also make sense to archive the
> WALs to avoid reading the extras.
> RS shutdown should archive WALs if possible after flushing/closing regions;
> given that the latter can fail, perhaps once before, and once after.
> Closing a region via an RPC should also try to archive WAL.
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