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https://issues.apache.org/jira/browse/PHOENIX-2903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15295845#comment-15295845
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Rajeshbabu Chintaguntla commented on PHOENIX-2903:
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region.startRegionOperation() doesn't know scan is outside of region boundary
but it will identify NotServingRegionException. Lets suppose there is a split
between preScannerOpen and postScannerOpen NotServingRegionException will
thrown out which we are throwing back as StaleRegionBoundaryCacheException to
client so that BaseResultIterator#getIterators itself create new parallel scans
for split regions at starting point only.
> Handle split during scan for row key ordered aggregations
> ---------------------------------------------------------
>
> Key: PHOENIX-2903
> URL: https://issues.apache.org/jira/browse/PHOENIX-2903
> Project: Phoenix
> Issue Type: Bug
> Reporter: James Taylor
> Assignee: James Taylor
> Attachments: PHOENIX-2903_v1.patch, PHOENIX-2903_wip.patch
>
>
> Currently a hole in our split detection code
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