You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@hive.apache.org by "Eugene Koifman (JIRA)" <ji...@apache.org> on 2015/11/12 18:24:11 UTC
[jira] [Updated] (HIVE-12389)
CompactionTxnHandler.cleanEmptyAbortedTxns() should safeguard against huge
IN clauses
[ https://issues.apache.org/jira/browse/HIVE-12389?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Eugene Koifman updated HIVE-12389:
----------------------------------
Attachment: HIVE-12389.patch
> CompactionTxnHandler.cleanEmptyAbortedTxns() should safeguard against huge IN clauses
> -------------------------------------------------------------------------------------
>
> Key: HIVE-12389
> URL: https://issues.apache.org/jira/browse/HIVE-12389
> Project: Hive
> Issue Type: Bug
> Components: Metastore, Transactions
> Affects Versions: 1.0.0
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Attachments: HIVE-12389.patch
>
>
> in extreme situations, due to misconfigurations, it may be possible to have 100Ks or even 1Ms of aborted txns.
> This causes delete from TXNS where txn_id in (...) to have a huge IN clause and DB chokes.
> Should use something like TxnHandler.TIMED_OUT_TXN_ABORT_BATCH_SIZE to break up delete into multiple queries. (Incidentally the batch size should likely be 1000, not 100, maybe even configurable).
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)