You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@ignite.apache.org by "Aleksey Plekhanov (Jira)" <ji...@apache.org> on 2020/07/03 06:48:00 UTC
[jira] [Updated] (IGNITE-11349) MVCC: Deadlock in query pool when
executing DML over caches with queryParallism > 1
[ https://issues.apache.org/jira/browse/IGNITE-11349?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Aleksey Plekhanov updated IGNITE-11349:
---------------------------------------
Fix Version/s: (was: 2.9)
> MVCC: Deadlock in query pool when executing DML over caches with queryParallism > 1
> -----------------------------------------------------------------------------------
>
> Key: IGNITE-11349
> URL: https://issues.apache.org/jira/browse/IGNITE-11349
> Project: Ignite
> Issue Type: Bug
> Components: mvcc, sql
> Reporter: Roman Kondakov
> Priority: Major
> Labels: mvcc_stability
>
> Reproducer: {{CacheMvccSelectForUpdateQueryBasicTest}}
> There is possible deadlock in {{QUERY_POOL}} when running massive SQL updates using queries without reducer when {{cache.queryParallelism > 1}}. These updates fire two step queries on each data node and both map and reduce phases are executed in the same {{QUERY_POOL}} which can lead to deadlock because reduce phase has blocking operation {{GridReduceQueryExecutor#awaitAllReplies}}.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)