[jira] [Commented] (IMPALA-12513) The metadata should be reset when the CatalogD become active

["Zhi Tang (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IMPALA-12513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17779086#comment-17779086 ] 

Zhi Tang commented on IMPALA-12513:
-----------------------------------

There are two cases that trigger a failover of the CatalogD:
  ①Active CatalogD failure;
  ②Restart the StatestoreD;
When switching active CatalogD, the loaded metadata in the candidate CatalogD may not be the latest. We should reset the metadata to ensure that there are no metadata inconsistency exceptions after switching.

> The metadata should be reset when the CatalogD become active
> ------------------------------------------------------------
>
>                 Key: IMPALA-12513
>                 URL: https://issues.apache.org/jira/browse/IMPALA-12513
>             Project: IMPALA
>          Issue Type: Bug
>            Reporter: Zhi Tang
>            Priority: Major
>
> When performing an automatic failover of CatalogD, we should ensure that the metadata for active Catalogd is up to date.



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