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https://issues.apache.org/jira/browse/IGNITE-11349?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Roman Kondakov updated IGNITE-11349:
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Description:
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}}.
> 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
> Fix For: 2.8
>
>
> 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}}.
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