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https://issues.apache.org/jira/browse/HBASE-21644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16729862#comment-16729862
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Nihal Jain commented on HBASE-21644:
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{quote}So the problem is that ReopenTableRegionsProcedure can not deal with
region replica?
{quote}
The problem occurs because the region open sequence number does not change for
replica region while the method
\{{RegionStates.checkReopened(HRegionLocation)}} assumes that region has opened
only if new open sequence number is greater than old one. This never happens
and we end up doing region reopen step for all replica regions infinitely in
ReopenTableRegionsProcedure.
> Modify table procedure runs infinitely for a table having region replication
> > 1
> --------------------------------------------------------------------------------
>
> Key: HBASE-21644
> URL: https://issues.apache.org/jira/browse/HBASE-21644
> Project: HBase
> Issue Type: Bug
> Components: Admin
> Affects Versions: 3.0.0, 2.1.1, 2.1.2
> Reporter: Nihal Jain
> Assignee: Nihal Jain
> Priority: Critical
> Attachments: HBASE-21644.master.UT.patch
>
>
> *Steps to reproduce*
> # Create a table with region replication set to a value greater than 1
> # Modify any of the table properties, say max file size
> *Expected Result*
> The modify table should succeed and run to completion.
> *Actual Result*
> The modify table keep running infinitely
> *Analysis/Issue*
> The problem occurs due to inifinitely looping between states
> {{REOPEN_TABLE_REGIONS_REOPEN_REGIONS}} and
> {{REOPEN_TABLE_REGIONS_CONFIRM_REOPENED}} of {{ReopenTableRegionsProcedure}},
> called as part of {{ModifyTableProcedure}}.
> *Consequences*
> For a table having region replicas:
> - Any modify table operation fails to complete
> - Also, enable table replication fails to complete as it is unable to change
> the replication scope of the table in source cluster
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