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From "Mithun Radhakrishnan (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HIVE-17612) Hive does not insert dynamic partition-sets atomically
Date Tue, 26 Sep 2017 23:25:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-17612?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mithun Radhakrishnan reassigned HIVE-17612:
-------------------------------------------


> Hive does not insert dynamic partition-sets atomically
> ------------------------------------------------------
>
>                 Key: HIVE-17612
>                 URL: https://issues.apache.org/jira/browse/HIVE-17612
>             Project: Hive
>          Issue Type: Improvement
>          Components: CLI, Hive
>    Affects Versions: 2.2.0, 3.0.0
>            Reporter: Mithun Radhakrishnan
>            Assignee: Mithun Radhakrishnan
>
> If one inserts partitions to a Hive table using a Hive query (e.g. {{INSERT OVERWRITE
TABLE my_table PARTITION (foo, bar) SELECT * FROM another_table;}}), each dynamic partition
is added separately, using {{HMSC.append_partition()}}. By contrast, Pig/HCatLoader does the
same atomically, using {{HMSC.add_partitions()}}.
> Because of this behaviour, Oozie workflows might kick off when the first partition is
registered, but before the last partition in the set is available.
> This was verified in the metastore-logs, with multiple {{ADD_PARTITION}} events fired
for the same query (i.e. once per added partition), instead of a single event for the set.
> It would be ideal for Hive to provide atomic partition-adds.



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