[jira] [Work logged] (HIVE-19569) alter table db1.t1 rename db2.t2 generates MetaStoreEventListener.onDropTable()

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-19569?focusedWorklogId=446698&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-446698 ]

ASF GitHub Bot logged work on HIVE-19569:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 16/Jun/20 16:54
            Start Date: 16/Jun/20 16:54
    Worklog Time Spent: 10m 
      Work Description: github-actions[bot] commented on pull request #368:
URL: https://github.com/apache/hive/pull/368#issuecomment-644886465


   This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.
   Feel free to reach out on the dev@hive.apache.org list if the patch is in need of reviews.


----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

For queries about this service, please contact Infrastructure at:
users@infra.apache.org


Issue Time Tracking
-------------------

            Worklog Id:     (was: 446698)
    Remaining Estimate: 0h
            Time Spent: 10m

> alter table db1.t1 rename db2.t2 generates MetaStoreEventListener.onDropTable()
> -------------------------------------------------------------------------------
>
>                 Key: HIVE-19569
>                 URL: https://issues.apache.org/jira/browse/HIVE-19569
>             Project: Hive
>          Issue Type: Bug
>          Components: Metastore, Standalone Metastore, Transactions
>    Affects Versions: 3.0.0
>            Reporter: Eugene Koifman
>            Assignee: mahesh kumar behera
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.1.0, 4.0.0
>
>         Attachments: HIVE-19569.01-branch-3.patch, HIVE-19569.01.patch, HIVE-19569.02.patch, HIVE-19569.03.patch, HIVE-19569.04.patch
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> When renaming a table within the same DB, this operation causes {{MetaStoreEventListener.onAlterTable()}} to fire but when changing DB name for a table it causes {{MetaStoreEventListener.onDropTable()}} + {{MetaStoreEventListener.onCreateTable()}}.
> The files from original table are moved to new table location.  
> This creates confusing semantics since any logic in {{onDropTable()}} doesn't know about the larger context, i.e. that there will be a matching {{onCreateTable()}}.
> In particular, this causes a problem for Acid tables since files moved from old table use WriteIDs that are not meaningful with the context of new table.
> Current implementation is due to replication.  This should ideally be changed to raise a "not supported" error for tables that are marked for replication.
> cc [~sankarh]



--
This message was sent by Atlassian Jira
(v8.3.4#803005)