carlmartin created SPARK-16941:
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Summary: 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: 2.0.0, 1.5.1
Reporter: carlmartin
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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