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https://issues.apache.org/jira/browse/FLINK-11284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16737077#comment-16737077
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vinoyang commented on FLINK-11284:
----------------------------------
Yes, at present, most PRs fail because of this issue.
> RocksDBStateBackendMigrationTest.testStateBackendRestoreSucceedsIfNewKeySerializerRequiresReconfiguration
> fails on Travis
> -------------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-11284
> URL: https://issues.apache.org/jira/browse/FLINK-11284
> Project: Flink
> Issue Type: Improvement
> Components: State Backends, Checkpointing
> Affects Versions: 1.8.0
> Reporter: Till Rohrmann
> Priority: Critical
> Labels: test-stability
>
> The
> {{RocksDBStateBackendMigrationTest.testStateBackendRestoreSucceedsIfNewKeySerializerRequiresReconfiguration}}
> fails on Travis.
> {code}
> 11:35:52.592 [ERROR] Tests run: 50, Failures: 0, Errors: 2, Skipped: 2, Time
> elapsed: 2.138 s <<< FAILURE! - in
> org.apache.flink.contrib.streaming.state.RocksDBStateBackendMigrationTest
> 11:35:52.594 [ERROR]
> testStateBackendRestoreSucceedsIfNewKeySerializerRequiresReconfiguration[Incremental
> checkpointing:
> false](org.apache.flink.contrib.streaming.state.RocksDBStateBackendMigrationTest)
> Time elapsed: 0.092 s <<< ERROR!
> java.lang.UnsupportedOperationException: The serializer should have been
> reconfigured as a new instance; shouldn't be used.
> 11:35:52.596 [ERROR]
> testStateBackendRestoreSucceedsIfNewKeySerializerRequiresReconfiguration[Incremental
> checkpointing:
> true](org.apache.flink.contrib.streaming.state.RocksDBStateBackendMigrationTest)
> Time elapsed: 0.06 s <<< ERROR!
> java.lang.UnsupportedOperationException: The serializer should have been
> reconfigured as a new instance; shouldn't be used.
> 11:35:52.930 [INFO]
> 11:35:52.930 [INFO] Results:
> 11:35:52.930 [INFO]
> 11:35:52.930 [ERROR] Errors:
> 11:35:52.930 [ERROR]
> RocksDBStateBackendMigrationTest>StateBackendMigrationTestBase.testStateBackendRestoreSucceedsIfNewKeySerializerRequiresReconfiguration:351->StateBackendMigrationTestBase.testKeySerializerUpgrade:401
> » UnsupportedOperation
> 11:35:52.930 [ERROR]
> RocksDBStateBackendMigrationTest>StateBackendMigrationTestBase.testStateBackendRestoreSucceedsIfNewKeySerializerRequiresReconfiguration:351->StateBackendMigrationTestBase.testKeySerializerUpgrade:401
> » UnsupportedOperation
> 11:35:52.930 [INFO]
> 11:35:52.930 [ERROR] Tests run: 346, Failures: 0, Errors: 2, Skipped: 7
> {code}
> https://api.travis-ci.org/v3/job/476770419/log.txt
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