[jira] [Updated] (HIVE-18193) Migrate existing ACID tables to use write id per table rather than global transaction id

["Vineet Garg (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-18193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vineet Garg updated HIVE-18193:
-------------------------------
    Fix Version/s:     (was: 3.0.0)
                   3.1.0

Deferring this to 3.1.0 since the branch for 3.0.0 has been cut off. Please update the JIRA if you would like to get your patch in 3.0.0.

> Migrate existing ACID tables to use write id per table rather than global transaction id
> ----------------------------------------------------------------------------------------
>
>                 Key: HIVE-18193
>                 URL: https://issues.apache.org/jira/browse/HIVE-18193
>             Project: Hive
>          Issue Type: Sub-task
>          Components: HiveServer2, Transactions
>    Affects Versions: 3.0.0
>            Reporter: anishek
>            Assignee: Sankar Hariappan
>            Priority: Major
>             Fix For: 3.1.0
>
>
> dependent upon HIVE-18192 
> For existing ACID Tables we need to update the table level write id metatables/sequences so any new operations on these tables works seamlessly without any conflicting data in existing base/delta files. 
> 1. Need to create metadata tables such as NEXT_WRITE_ID and TXN_TO_WRITE_ID and add entries for each ACID/MM tables.
> 2. All current open transactions to have an entry in TXN_TO_WRITE_ID to avoid allocating multiple write IDs.



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