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https://issues.apache.org/jira/browse/CASSANDRA-9328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17812359#comment-17812359
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Jeremy Hanna commented on CASSANDRA-9328:
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See CASSANDRA-15350 for a separated out exception type in native protocol v5.
> WriteTimeoutException thrown when LWT concurrency > 1, despite the query
> duration taking MUCH less than cas_contention_timeout_in_ms
> ------------------------------------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-9328
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9328
> Project: Cassandra
> Issue Type: Bug
> Components: Feature/Lightweight Transactions, Legacy/Coordination
> Reporter: Aaron Whiteside
> Priority: Normal
> Labels: LWT
> Attachments: CassandraLWTTest.java, CassandraLWTTest2.java
>
>
> WriteTimeoutException thrown when LWT concurrency > 1, despite the query
> duration taking MUCH less than cas_contention_timeout_in_ms.
> Unit test attached, run against a 3 node cluster running 2.1.5.
> If you reduce the threadCount to 1, you never see a WriteTimeoutException. If
> the WTE is due to not being able to communicate with other nodes, why does
> the concurrency >1 cause inter-node communication to fail?
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