[jira] [Updated] (IMPALA-12267) DMLs/DDLs can hang as a result of catalogd change

["Csaba Ringhofer (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-12267?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Csaba Ringhofer updated IMPALA-12267:
-------------------------------------
    Affects Version/s: 
:
Impala 2.8.0, Impala 3.2.0, Impala 4.0.0, Impala 3.3.0, Impala 3.4.0

> DMLs/DDLs can hang as a result of catalogd change
> -------------------------------------------------
>
>                 Key: IMPALA-12267
>                 URL: https://issues.apache.org/jira/browse/IMPALA-12267
>             Project: IMPALA
>          Issue Type: Bug
>    Affects Versions: :
Impala 2.8.0, Impala 3.2.0, Impala 4.0.0, Impala 3.3.0, Impala 3.4.0
>            Reporter: Csaba Ringhofer
>            Priority: Major
>
> IMPALA-5476 added handling for changes in catalogd service ID during the lifetime of a DML/DDL query, but the loop that waits for a new catalogd service ID can wait indefinitely in case the DML/DDL was handled by the previous catalogd and restart happened just after replying to the coordinator:
> https://github.com/apache/impala/blob/d0fe4c604f72d41019832513ebf65cfe8f469953/be/src/service/impala-server.cc#L2204
> Could reproduce this by adding a sleep just before taking catalog_version_lock_ and restarting catalogd while a DML/DDL was waiting there. As a result the query hanged - it could be finished only by restarting catalogd and cancelling the query also didn't help.



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