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Posted to issues-all@impala.apache.org by "Vihang Karajgaonkar (Jira)" <ji...@apache.org> on 2021/09/07 18:54:00 UTC
[jira] [Commented] (IMPALA-10776) Hold write lock for less time in
ALTER TABLE RECOVER PARTITIONS
[ https://issues.apache.org/jira/browse/IMPALA-10776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17411430#comment-17411430 ]
Vihang Karajgaonkar commented on IMPALA-10776:
----------------------------------------------
I can take a stab at this.
> Hold write lock for less time in ALTER TABLE RECOVER PARTITIONS
> ---------------------------------------------------------------
>
> Key: IMPALA-10776
> URL: https://issues.apache.org/jira/browse/IMPALA-10776
> Project: IMPALA
> Issue Type: Improvement
> Components: Frontend
> Reporter: Csaba Ringhofer
> Priority: Major
>
> ALTER TABLE RECOVER PARTITIONS holds a write lock on the table for the whole time while it lists the HDFS directories and creates the new partitions in HMS. This can potentially take a long time and block catalog updates.
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