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https://issues.apache.org/jira/browse/APEXMALHAR-2003?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15160004#comment-15160004
]
Chandni Singh edited comment on APEXMALHAR-2003 at 2/24/16 1:13 AM:
--------------------------------------------------------------------
AbstractFileSplitter has a non transient reference to {BlockMetaDataIterator}.
BlockMetaDataIterator however has a transient reference to AbstractFileSplitter.
When FileSplitter recovered, the saved blockMetadataIterator's splitter field
was {null}
was (Author: csingh):
AbstractFileSplitter has a non transient reference to
```BlockMetaDataIterator```.
BlockMetaDataIterator however has a transient reference to AbstractFileSplitter.
When FileSplitter recovered, the saved blockMetadataIterator's splitter field
was ```null```
> NPE in FileSplitterInput
> ------------------------
>
> Key: APEXMALHAR-2003
> URL: https://issues.apache.org/jira/browse/APEXMALHAR-2003
> Project: Apache Apex Malhar
> Issue Type: Bug
> Reporter: Vlad Rozov
> Assignee: Chandni Singh
>
> NPE in FileSplitterInput:
> {noformat}
> 2016-02-23 16:50:12,171 [1/fileSplitter:FileSplitterInput] ERROR
> engine.StreamingContainer run - Operator set
> [OperatorDeployInfo[id=1,name=fileSplitter,type=INPUT,checkpoint={56ccee5c000000ef,
> 0,
> 0},inputs=[],outputs=[OperatorDeployInfo.OutputDeployInfo[portName=blocksMetadataOutput,streamId=blockin,bufferServer=d1xphdta0002.directv.com],
>
> OperatorDeployInfo.OutputDeployInfo[portName=filesMetadataOutput,streamId=filemeta,bufferServer=d1xphdta0002.directv.com]]]]
> stopped running due to an exception.
> java.lang.NullPointerException
> at
> com.datatorrent.lib.io.fs.AbstractFileSplitter$BlockMetadataIterator.next(AbstractFileSplitter.java:322)
> at
> com.datatorrent.lib.io.fs.AbstractFileSplitter.emitBlockMetadata(AbstractFileSplitter.java:150)
> at
> com.datatorrent.lib.io.fs.FileSplitterInput.replay(FileSplitterInput.java:137)
> at
> com.datatorrent.lib.io.fs.FileSplitterInput.beginWindow(FileSplitterInput.java:122)
> at com.datatorrent.stram.engine.InputNode.run(InputNode.java:116)
> at
> com.datatorrent.stram.engine.StreamingContainer$2.run(StreamingContainer.java:1380)
> 2016-02-23 16:50:14,124 [main] INFO engine.StreamingContainer
> processHeartbeatResponse - Undeploy request: [1]
> 2016-02-23 16:50:14,126 [main] INFO engine.StreamingContainer undeploy -
> Undeploy complete.
> {noformat}
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