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https://issues.apache.org/jira/browse/HIVE-26036?focusedWorklogId=743929&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-743929
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ASF GitHub Bot logged work on HIVE-26036:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 18/Mar/22 14:49
Start Date: 18/Mar/22 14:49
Worklog Time Spent: 10m
Work Description: wecharyu commented on pull request #3104:
URL: https://github.com/apache/hive/pull/3104#issuecomment-1072364148
@kgyrtkirk @marton-bod Could you pls review this PR?
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Issue Time Tracking
-------------------
Worklog Id: (was: 743929)
Time Spent: 0.5h (was: 20m)
> NPE caused by getMTable() in ObjectStore
> ----------------------------------------
>
> Key: HIVE-26036
> URL: https://issues.apache.org/jira/browse/HIVE-26036
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 3.1.2, 4.0.0
> Reporter: Yu Weiqiang
> Assignee: Yu Weiqiang
> Priority: Minor
> Labels: pull-request-available
> Attachments: NPE_From_getMTable.png
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> *Issue*
> Some api in ObjectStore invoke getMTable() but not check that if the returned
> value is null, which caused the NPE, like addPartitions(), addPartition(),
> alterPartition() et.
> *Reason*
> Such api described above will check that whether the table exists in
> HMSHandler (first check), but if the table is dropped by other threads after
> the first check, the NPE will happen.
> The simple idea is that we can check the table each time we get from
> getMTable().
> *Stack example*
> !NPE_From_getMTable.png!
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