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https://issues.apache.org/jira/browse/SPARK-16941?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-16941:
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Assignee: Apache Spark
> SparkSQLOperationManager shuold use synchronization map to store SessionHandle
> ------------------------------------------------------------------------------
>
> Key: SPARK-16941
> URL: https://issues.apache.org/jira/browse/SPARK-16941
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.5.1, 2.0.0
> Reporter: carlmartin
> Assignee: Apache Spark
> Priority: Minor
>
> When I had run a high concurrency sql query with thriefserver, I found this
> error without any previous error:
> *Error: java.util.NoSuchElementException: key not found: SessionHandle
> [a2ea264f-d29d-43c4-842f-4e0f2a3cf877] (state=,code=0)*
> So I check the code in *SparkSQLOperationManager*, and found the
> *Map(sessionToContexts and sessionToActivePool)* is not thread safe in it.
> I found this error in version 1.5.1 but I think the last master branch will
> still have this error.
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