[jira] [Commented] (HIVE-6476) Support Append with Dynamic Partitioning

["Mariappan Asokan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-6476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15243005#comment-15243005 ] 

Mariappan Asokan commented on HIVE-6476:
----------------------------------------

I have the same question: What are the corner cases that need to be tested?  Dynamic partitioning with append is a very common use case.  Sushanth, if you can elaborate on the "corner cases" and give some pointers I can pick up this Jira and work on it.  Thanks.


> Support Append with Dynamic Partitioning
> ----------------------------------------
>
>                 Key: HIVE-6476
>                 URL: https://issues.apache.org/jira/browse/HIVE-6476
>             Project: Hive
>          Issue Type: Sub-task
>          Components: HCatalog, Metastore, Query Processor, Thrift API
>            Reporter: Sushanth Sowmyan
>
> Currently, we do not support mixing dynamic partitioning and append in the same job. One reason is that we need exhaustive testing of corner cases for that, and a second reason is the behaviour of add_partitions. To support dynamic partitioning with append, we'd have to have a add_partitions_if_not_exist call, rather than an add_partitions call.
> Thus, the current implementation in HIVE-6475 assumes immutability for all dynamic partitioning jobs, irrespective of whether or not the table is marked as mutable or not.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)