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https://issues.apache.org/jira/browse/HBASE-25130?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reid Chan updated HBASE-25130:
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Fix Version/s: 1.7.1
> [branch-1] Masters in-memory serverHoldings map is not cleared during hbck
> repair
> ---------------------------------------------------------------------------------
>
> Key: HBASE-25130
> URL: https://issues.apache.org/jira/browse/HBASE-25130
> Project: HBase
> Issue Type: Bug
> Reporter: Sandeep Guggilam
> Assignee: Victor Li
> Priority: Major
> Fix For: 1.7.1
>
>
> {color:#1d1c1d}Incase of repairing overlaps, hbck essentially calls the
> closeRegion RPC on RS followed by offline RPC on Master to offline all the
> overlap regions that would be merged into a new region. {color}
> {color:#1d1c1d}However the offline RPC doesn’t remove it from the
> serverHoldings map unless the new state is MERGED/SPLIT
> ([https://github.com/apache/hbase/blob/branch-1/hbase-server/src/main/java/org/apache/hadoop/hbase/master/RegionStates.java#L719])
> b{color}{color:#1d1c1d}ut the new state in this case is OFFLINE. {color}
> {color:#1d1c1d}This is actually intended to match with the META entries and
> would be removed later when the region is online on a different server.
> However, in our case , the region would never be online on a new server,
> hence the region info is never cleared from the map that is used by balancer
> and SCP for incorrect reeassignment.{color}
> {color:#1d1c1d}We might need to tackle this by removing the entries from the
> map when hbck actually deletes{color}{color:#1d1c1d} the meta entries for
> this region which kind of matches the in-memory map’s expectation with the
> META state.{color}
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