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https://issues.apache.org/jira/browse/HIVE-15807?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pengcheng Xiong resolved HIVE-15807.
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Resolution: Duplicate
> MSCK operation hangs in HiveMetaStoreChecker.checkPartitionDirs
> ---------------------------------------------------------------
>
> Key: HIVE-15807
> URL: https://issues.apache.org/jira/browse/HIVE-15807
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.2.0
> Reporter: Subramanyam Pattipaka
> Assignee: Pengcheng Xiong
> Fix For: 2.2.0
>
> Attachments: msck-jstack.txt
>
>
> The seems to be a regression from HIVE-14511. The operation was hung in
> checkPartitionDirs. The data has 3 levels of partitions (month, date, id)
> which has total of 800 partitions.
> An example path would look like month=9/day=30/id=12
> The default value for hive config hive.mv.files.thread was set to 128. I have
> attached the jstack of hive process used to run msck command
> checkPartitionDirs is implemented as recursive function which uses same pool
> to submit worker threads. It seems thread pool ran out of thread to do the
> actual work and all threads seems to be waiting and hung. Please take a look
> the stack and confirm if this is the case here.
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