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https://issues.apache.org/jira/browse/BEAM-9020?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17002404#comment-17002404
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Tomo Suzuki commented on BEAM-9020:
-----------------------------------
Thanks.
> LengthPrefixUnknownCodersTest to avoid relying on AbstractMap's equality
> ------------------------------------------------------------------------
>
> Key: BEAM-9020
> URL: https://issues.apache.org/jira/browse/BEAM-9020
> Project: Beam
> Issue Type: Improvement
> Components: io-java-gcp
> Reporter: Tomo Suzuki
> Priority: Major
>
> In an attempt for BEAM-8695 LengthPrefixUnknownCodersTest failed when trying
> to upgrade google-http-client v1.34.0, because LengthPrefixUnknownCodersTest
> relies on the equality of {{CloudObject}} with Map.
> Class hierarchy:
> {noformat}
> CloudObject < GenericJson < GenericData < AbstractMap
> {noformat}
> It was working fine as long as CloudObject's equality inherits
> AbstractMap.equality. {{GenericData}} did not override equals method in
> google-http-client v1.28.0 and earlier. The comparison was checking only key
> and value of a Map.
> {code:java}
> assertEquals(
> CloudObjects.asCloudObject(prefixedWindowedValueCoder, null), // This
> is a CloudObject
> lengthPrefixedCoderCloudObject); // This is a
> Map
> {code}
> However, with google-http-client v1.29.0 or higher, GenericData has its own
> {{equals}} method
> ([PR#589|https://github.com/googleapis/google-http-java-client/pull/589])
> that checks {{classInfo}} and thus the comparisons between a CloudObject and
> a Map always fail.
> Test failures when I tried to upgrade google-http-client 1.34.0
> ([Jenkins|https://builds.apache.org/job/beam_PreCommit_Java_Commit/9288/#showFailuresLink]):
> {noformat}
> org.apache.beam.runners.dataflow.worker.graph.LengthPrefixUnknownCodersTest.testLengthPrefixUnknownCoders
> org.apache.beam.runners.dataflow.worker.graph.LengthPrefixUnknownCodersTest.testLengthPrefixForInstructionOutputNodeWithGrpcNodeSuccessor
> org.apache.beam.runners.dataflow.worker.graph.LengthPrefixUnknownCodersTest.testLengthPrefixForLengthPrefixCoder
> org.apache.beam.runners.dataflow.worker.graph.LengthPrefixUnknownCodersTest.testLengthPrefixForSideInputInfos
> org.apache.beam.runners.dataflow.worker.graph.LengthPrefixUnknownCodersTest.testLengthPrefixParDoInstructionCoder
> org.apache.beam.runners.dataflow.worker.graph.LengthPrefixUnknownCodersTest.testLengthPrefixInstructionOutputCoder
> org.apache.beam.runners.dataflow.worker.graph.LengthPrefixUnknownCodersTest.testLengthPrefixWriteInstructionCoder
> org.apache.beam.runners.dataflow.worker.graph.LengthPrefixUnknownCodersTest.testLengthPrefixAndReplaceUnknownCoder
> org.apache.beam.runners.dataflow.worker.graph.LengthPrefixUnknownCodersTest.testLengthPrefixAndReplaceForRunnerNetwork
> org.apache.beam.runners.dataflow.worker.graph.LengthPrefixUnknownCodersTest.testLengthPrefixForInstructionOutputNodeWithGrpcNodePredecessor
> org.apache.beam.runners.dataflow.worker.graph.LengthPrefixUnknownCodersTest.testLengthPrefixReadInstructionCoder
> {noformat}
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