[jira] [Assigned] (HIVE-26882) Allow transactional check of Table parameter before altering the Table

["Peter Vary (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-26882?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Peter Vary reassigned HIVE-26882:
---------------------------------

    Assignee: Peter Vary

> Allow transactional check of Table parameter before altering the Table
> ----------------------------------------------------------------------
>
>                 Key: HIVE-26882
>                 URL: https://issues.apache.org/jira/browse/HIVE-26882
>             Project: Hive
>          Issue Type: Improvement
>          Components: Standalone Metastore
>            Reporter: Peter Vary
>            Assignee: Peter Vary
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 2h 40m
>  Remaining Estimate: 0h
>
> We should add the possibility to transactionally check if a Table parameter is changed before altering the table in the HMS.
> This would provide an alternative, less error-prone and faster way to commit an Iceberg table, as the Iceberg table currently needs to:
> - Create an exclusive lock
> - Get the table metadata to check if the current snapshot is not changed
> - Update the table metadata
> - Release the lock
> After the change these 4 HMS calls could be substituted with a single alter table call.
> Also we could avoid cases where the locks are left hanging by failed processes



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