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https://issues.apache.org/jira/browse/PHOENIX-3789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15969549#comment-15969549
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Geoffrey Jacoby commented on PHOENIX-3789:
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It appears that the preMutateBatch code can make RPCs, but this is my first
time in the indexer code so I'd defer to [~giacomotaylor] on this. It calls
doPre(), which calls IndexWriter.write(), which calls IndexCommitter.write(),
which is pluggable but in the default ParallelWriterIndexCommitter it appears
to be making calls to HTableInterface.batch().
> Execute cross region index maintenance calls outside of row lock
> ----------------------------------------------------------------
>
> Key: PHOENIX-3789
> URL: https://issues.apache.org/jira/browse/PHOENIX-3789
> Project: Phoenix
> Issue Type: Bug
> Reporter: James Taylor
> Assignee: James Taylor
> Fix For: 4.11.0, 4.10.1
>
> Attachments: PHOENIX-3789.patch, PHOENIX-3789_v2.patch
>
>
> Making cross region server calls while the row is locked can lead to a
> greater chance of resource starvation. We can use the
> postBatchMutateIndispensably hook instead of the postBatchMutate call for our
> processing.
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