[jira] [Resolved] (HIVE-7256) HiveTxnManager should be stateless

["Eugene Koifman (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-7256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eugene Koifman resolved HIVE-7256.
----------------------------------
    Resolution: Won't Fix

> HiveTxnManager should be stateless
> ----------------------------------
>
>                 Key: HIVE-7256
>                 URL: https://issues.apache.org/jira/browse/HIVE-7256
>             Project: Hive
>          Issue Type: Bug
>          Components: Locking
>    Affects Versions: 0.13.1
>            Reporter: Eugene Koifman
>            Assignee: Alan Gates
>         Attachments: HIVE-7256.addendum.patch, HIVE-7256.patch
>
>
> In order to integrate HCat with Hive ACID, we should be able to create an instance of HiveTxnManager and use it to acquire locks, and release locks from a different instance of HiveTxnManager.
> One use case where this shows up is when a job using HCat is retried, since calls to TxnManager are made from the jobs OutputCommitter.
> Another, is HCatReader/Writer.  For example, TestReaderWriter, calls setupJob()  from one instance of OutputCommitterContainer and commitJob() from another instance.  The 2nd case is perhaps better solved by ensuring there is only 1 instance of OutputCommitterContainer.



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