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From "Eugene Koifman (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-13212) locking too coarse/broad for update/delete on a pratition
Date Wed, 27 Apr 2016 18:55:12 GMT

     [ https://issues.apache.org/jira/browse/HIVE-13212?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eugene Koifman updated HIVE-13212:
----------------------------------
    Summary: locking too coarse/broad for update/delete on a pratition  (was: locking too
coarse for update/delete on a pratition)

> locking too coarse/broad for update/delete on a pratition
> ---------------------------------------------------------
>
>                 Key: HIVE-13212
>                 URL: https://issues.apache.org/jira/browse/HIVE-13212
>             Project: Hive
>          Issue Type: Bug
>          Components: Transactions
>    Affects Versions: 1.2.1
>            Reporter: Eugene Koifman
>            Assignee: Eugene Koifman
>
> create table acidTblPart (a int, b int) partitioned by (p string) clustered by (a) into
" + BUCKET_COUNT + " buckets stored as orc TBLPROPERTIES ('transactional'='true')
> update acidTblPart set b = 17 where p = 1
> This acquires share_write on the table while based on p = 1 we should be able to figure
out that only 1 partition is affected and only lock the partition
> Same should apply to DELETE



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