[jira] [Updated] (HBASE-27366) split or merge removed region under snapshot

["Huaxiang Sun (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-27366?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Huaxiang Sun updated HBASE-27366:
---------------------------------
    Affects Version/s: 2.4.5
                           (was: 2.4.10)

> split or merge removed region under snapshot
> --------------------------------------------
>
>                 Key: HBASE-27366
>                 URL: https://issues.apache.org/jira/browse/HBASE-27366
>             Project: HBase
>          Issue Type: Bug
>          Components: snapshots
>    Affects Versions: 2.4.5
>            Reporter: Huaxiang Sun
>            Priority: Major
>
> We run into snapshot failures for one table with large number of regions. The event sequence is like the following:
>  
>  # Snapshot process lists all regions for one table.
>  # Normalize kicks in to split some regions for the table under snapshot.
>  # split finishes and major compaction finishes. The parent region is moved to archive.
>  # When the Snapshot processes the parent region, it does not exist and snapshot fails.
> Since snapshot process acquires the table lock, but there is no table lock acquired in split or merge process, they crash into each other.



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