[
https://issues.apache.org/jira/browse/HIVE-16688?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Eugene Koifman updated HIVE-16688:
----------------------------------
Status: Patch Available (was: Open)
> Make sure Alter Table to set transaction=true acquires X lock
> -------------------------------------------------------------
>
> Key: HIVE-16688
> URL: https://issues.apache.org/jira/browse/HIVE-16688
> Project: Hive
> Issue Type: Sub-task
> Components: Transactions
> Affects Versions: 1.3.0
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Priority: Critical
> Attachments: HIVE-16688.01.patch
>
>
> suppose we have non-acid table with some data
> An insert op starts (long running) (with hive.txn.strict.locking.mode=false
> this takes shared lock)
> An alter table runs to add (transactional=true)
> An update is run which will read the list of "original" files and assign IDs
> on the fly which are written to a delta file.
> The long running insert completes.
> Another update is run which now sees a different set of "original" files and
> will (most likely) assign different IDs.
> Need to make sure to mutex this
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
