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https://issues.apache.org/jira/browse/FLINK-20051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17228355#comment-17228355
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Robert Metzger commented on FLINK-20051:
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[~becket_qin] can you take a look at this failure?
> SourceReaderTestBase.testAddSplitToExistingFetcher failed with
> NullPointerException
> -----------------------------------------------------------------------------------
>
> Key: FLINK-20051
> URL: https://issues.apache.org/jira/browse/FLINK-20051
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Common
> Affects Versions: 1.12.0
> Reporter: Dian Fu
> Priority: Critical
> Labels: test-stability
> Fix For: 1.12.0
>
>
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=9322&view=logs&j=4be4ed2b-549a-533d-aa33-09e28e360cc8&t=0db94045-2aa0-53fa-f444-0130d6933518
> {code}
> 2020-11-08T21:49:29.6792941Z [ERROR]
> testAddSplitToExistingFetcher(org.apache.flink.connector.kafka.source.reader.KafkaSourceReaderTest)
> Time elapsed: 0.632 s <<< ERROR!
> 2020-11-08T21:49:29.6793408Z java.lang.NullPointerException
> 2020-11-08T21:49:29.6793998Z at
> org.apache.flink.connector.kafka.source.reader.KafkaPartitionSplitReader$KafkaPartitionSplitRecords.nextSplit(KafkaPartitionSplitReader.java:363)
> 2020-11-08T21:49:29.6795970Z at
> org.apache.flink.connector.base.source.reader.SourceReaderBase.moveToNextSplit(SourceReaderBase.java:187)
> 2020-11-08T21:49:29.6796596Z at
> org.apache.flink.connector.base.source.reader.SourceReaderBase.getNextFetch(SourceReaderBase.java:159)
> 2020-11-08T21:49:29.6797317Z at
> org.apache.flink.connector.base.source.reader.SourceReaderBase.pollNext(SourceReaderBase.java:116)
> 2020-11-08T21:49:29.6797942Z at
> org.apache.flink.connector.testutils.source.reader.SourceReaderTestBase.testAddSplitToExistingFetcher(SourceReaderTestBase.java:98)
> {code}
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