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https://issues.apache.org/jira/browse/FLINK-10827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16679779#comment-16679779
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ASF GitHub Bot commented on FLINK-10827:
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StefanRRichter opened a new pull request #7061: [FLINK-10827][tests] Add test
for duplicate() to SerializerTestBase
URL: https://github.com/apache/flink/pull/7061
## What is the purpose of the change
This PR adds a test for proper implementation of `TypeSerializer#duplicate`
to `SerializerTestBase`. The test is based on checking that concurrent use of
duplicated type serializers yields correct results and does not throw
exceptions.
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> Add test for duplicate() to SerializerTestBase
> ----------------------------------------------
>
> Key: FLINK-10827
> URL: https://issues.apache.org/jira/browse/FLINK-10827
> Project: Flink
> Issue Type: Test
> Components: Tests
> Reporter: Stefan Richter
> Assignee: Stefan Richter
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.7.0
>
>
> In the past, we had many bugs from type serializers that have not properly
> implemented the {{duplicate()}} method in a proper way. A very common error
> is to forget about creating a deep copy of some fields that can lead to
> concurrency problems in the backend.
> We should add a test case for that tests duplicated serializer from different
> threads to expose concurrency problems.
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