[jira] [Updated] (PHOENIX-3569) Deadlock when updating both of local and global index

["ChiaPing Tsai (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PHOENIX-3569?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ChiaPing Tsai updated PHOENIX-3569:
-----------------------------------
    Summary: Deadlock when updating both of local and global index  (was: Deadlock when updating both of index and global table)

> 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
>
> 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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