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Posted to dev@hive.apache.org by "Sankar Hariappan (JIRA)" <ji...@apache.org> on 2018/02/20 08:49:00 UTC

[jira] [Created] (HIVE-18750) Exchange partition should not be supported with per table write ID.

Sankar Hariappan created HIVE-18750:
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             Summary: Exchange partition should not be supported with per table write ID.
                 Key: HIVE-18750
                 URL: https://issues.apache.org/jira/browse/HIVE-18750
             Project: Hive
          Issue Type: Sub-task
          Components: HiveServer2, Transactions
    Affects Versions: 3.0.0
            Reporter: Sankar Hariappan
            Assignee: Sankar Hariappan
             Fix For: 3.0.0


Per table write id implementation (HIVE-18192) have introduced write ID per table and used write ID to name the delta/base files and also as primary key for each row.

Now, exchange partition have to move delta/base files across tables without changing the write ID which causes incorrect results. 

Also, this exchange partition feature is there to support the use-case of atomic updates. But with ACID updates, we shall support atomic-updates and hence it makes sense to not support exchange partition for ACID and MM tables.



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