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https://issues.apache.org/jira/browse/HBASE-7307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13529715#comment-13529715
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stack commented on HBASE-7307:
------------------------------
I think it safe to backport. One line change. Contained to the MetaReader
check. I can only see a fix. I can't see side effects (they may exist, I
can't see what they would be).
> MetaReader.tableExists should not return false if the specified table regions
> has been split
> --------------------------------------------------------------------------------------------
>
> Key: HBASE-7307
> URL: https://issues.apache.org/jira/browse/HBASE-7307
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.92.2, 0.94.3, 0.96.0
> Reporter: rajeshbabu
> Assignee: rajeshbabu
> Fix For: 0.92.3, 0.96.0, 0.94.4
>
> Attachments: 7307-trunk.txt, HBASE-7307_92.patch,
> HBASE-7307_94.patch, HBASE-7307_trunk.patch
>
>
> If a region is split parent we are not adding it to META scan results during
> full scan.
> {code}
> if (!isInsideTable(this.current, tableNameBytes)) return false;
> if (this.current.isSplitParent()) return true;
> // Else call super and add this Result to the collection.
> super.visit(r);
> {code}
> If all regions of a table has been split then result size will be zero and
> returning false.
> {code}
> fullScan(catalogTracker, visitor,
> getTableStartRowForMeta(tableNameBytes));
> // If visitor has results >= 1 then table exists.
> return visitor.getResults().size() >= 1;
> {code}
> Even table is present we are returning false which is not correct(its highly
> possible in case of tables with one region).
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