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https://issues.apache.org/jira/browse/FLINK-31120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17690523#comment-17690523
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Shuiqiang Chen edited comment on FLINK-31120 at 2/17/23 6:17 PM:
-----------------------------------------------------------------
Maybe it needs concurrent control for access to the static field
`collectIterators` in `StreamExecutionEnvironment`. There are four test cases
executing when running StringFunctionsITCase in a concurrent execution mode,
that has chance for a thread to add a collectorIterator through
`registerCollectIterator` while there is a foreach loop in executeAsync() in
another thread.
was (Author: csq):
Maybe tt needs concurrent control for access to the static field
`collectIterators` in `StreamExecutionEnvironment`. There are four test cases
executing when running StringFunctionsITCase in a concurrent execution mode,
that has chance for a thread to add a collectorIterator through
`registerCollectIterator` while there is a foreach loop in executeAsync() in
another thread.
> ConcurrentModificationException occurred in StringFunctionsITCase.test
> ----------------------------------------------------------------------
>
> Key: FLINK-31120
> URL: https://issues.apache.org/jira/browse/FLINK-31120
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Runtime
> Affects Versions: 1.17.0
> Reporter: Matthias Pohl
> Priority: Blocker
> Labels: test-stability
>
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=46255&view=logs&j=0c940707-2659-5648-cbe6-a1ad63045f0a&t=075c2716-8010-5565-fe08-3c4bb45824a4&l=12334
> {code}
> Feb 17 04:51:25 [ERROR] Tests run: 4, Failures: 0, Errors: 1, Skipped: 0,
> Time elapsed: 10.725 s <<< FAILURE! - in
> org.apache.flink.table.planner.functions.StringFunctionsITCase
> Feb 17 04:51:25 [ERROR]
> org.apache.flink.table.planner.functions.StringFunctionsITCase.test(TestCase)[4]
> Time elapsed: 4.367 s <<< ERROR!
> Feb 17 04:51:25 org.apache.flink.table.api.TableException: Failed to execute
> sql
> Feb 17 04:51:25 at
> org.apache.flink.table.api.internal.TableEnvironmentImpl.executeQueryOperation(TableEnvironmentImpl.java:974)
> Feb 17 04:51:25 at
> org.apache.flink.table.api.internal.TableEnvironmentImpl.executeInternal(TableEnvironmentImpl.java:1422)
> Feb 17 04:51:25 at
> org.apache.flink.table.api.internal.TableImpl.execute(TableImpl.java:476)
> Feb 17 04:51:25 at
> org.apache.flink.table.planner.functions.BuiltInFunctionTestBase$ResultTestItem.test(BuiltInFunctionTestBase.java:354)
> Feb 17 04:51:25 at
> org.apache.flink.table.planner.functions.BuiltInFunctionTestBase$TestSetSpec.lambda$getTestCase$4(BuiltInFunctionTestBase.java:320)
> Feb 17 04:51:25 at
> org.apache.flink.table.planner.functions.BuiltInFunctionTestBase$TestCase.execute(BuiltInFunctionTestBase.java:113)
> Feb 17 04:51:25 at
> org.apache.flink.table.planner.functions.BuiltInFunctionTestBase.test(BuiltInFunctionTestBase.java:93)
> Feb 17 04:51:25 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> [...]
> {code}
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