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https://issues.apache.org/jira/browse/PHOENIX-3569?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15811485#comment-15811485
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Rajeshbabu Chintaguntla edited comment on PHOENIX-3569 at 1/9/17 11:06 AM:
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[~chia7712] Moving the index updates to postPut/postDelete will not ensure
actual data and index consistency all the time. For local indexes we are ok
until HBase version contains HBASE-15600 is released. After HBASE-15600 we
don't see this kind of issues.
was (Author: rajeshbabu):
[~chia7712] Moving the index updates to postPut/postDelete will not ensure
consistency. For local indexes we are ok until HBase version contains
HBASE-15600 is released. After HBASE-15600 we don't see this kind of issues.
Can you provide the full stack trace?
> Deadlock when updating both of local and global index
> -----------------------------------------------------
>
> Key: PHOENIX-3569
> URL: https://issues.apache.org/jira/browse/PHOENIX-3569
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 4.9.0, 4.8.2
> Reporter: ChiaPing Tsai
> Priority: Critical
> Attachments: PHOENIX-3569.v0.patch, PHOENIX-3569.v1.patch
>
>
> We update the global index in Observer#postBatchMutate, but the hook is
> called before completing the mvcc.
> If ParallelWriterIndexCommitter are busy to update the local index, the other
> updates for global index will be blocked and the mvcc of data table won't be
> completed. The deadlock happens since the ParallelWriterIndexCommitter will
> never complete the updates for local index.
> We can reproduce the deadlock through the following step.
> # create a data table with a local and a global index.
> # create 10+ (DEFAULT_CONCURRENT_INDEX_WRITER_THREADS) threads which disable
> the auto commit to submit data
> # wait for the deadlock. the rs log will show the following message. "STUCK:
> MultiVersionConcurrencyControl{readPoint=8790, writePoint=8801}"
> It seems to me that we should update the both of local and global index on
> the hook of postPut and postDelete.
> Any suggestions are welcomed.
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