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Posted to issues@hive.apache.org by "Simhadri Govindappa (Jira)" <ji...@apache.org> on 2023/03/29 10:11:00 UTC

[jira] [Assigned] (HIVE-27191) Cleaner is blocked by orphaned entries in MHL table

     [ https://issues.apache.org/jira/browse/HIVE-27191?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Simhadri Govindappa reassigned HIVE-27191:
------------------------------------------


> Cleaner is blocked by orphaned entries in MHL table
> ---------------------------------------------------
>
>                 Key: HIVE-27191
>                 URL: https://issues.apache.org/jira/browse/HIVE-27191
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Simhadri Govindappa
>            Assignee: Simhadri Govindappa
>            Priority: Major
>
> The following  mhl_txnids do not exist in TXNS table, as a result, the cleaner gets blocked and many entries are stuck in the ready-for-cleaning state. 
> The cleaner should periodically check for such entries and remove them from MHL_TABLE to prevent the cleaner from being blocked.
> {noformat}
> postgres=# select mhl_txnid from min_history_level where not exists (select 1 from txns where txn_id = mhl_txnid);
>  mhl_txnid
> -----------
>   43708080
>   43708088
>   43679962
>   43680464
>   43680352
>   43680392
>   43680424
>   43680436
>   43680471
>   43680475
>   43680483
>   43622677
>   43708083
>   43708084
>   43678157
>   43680482
>   43680484
>   43622745
>   43622750
>   43706829
>   43707261
> (21 rows){noformat}



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