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https://issues.apache.org/jira/browse/HDFS-5401?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arpit Agarwal resolved HDFS-5401.
---------------------------------
Resolution: Fixed
Fix Version/s: Heterogeneous Storage (HDFS-2832)
Thanks for the quick review Nicholas! I committed it to branch HDFS-2832.
> Fix NPE in Directory Scanner
> ----------------------------
>
> Key: HDFS-5401
> URL: https://issues.apache.org/jira/browse/HDFS-5401
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode
> Affects Versions: Heterogeneous Storage (HDFS-2832)
> Reporter: Arpit Agarwal
> Assignee: Arpit Agarwal
> Fix For: Heterogeneous Storage (HDFS-2832)
>
> Attachments: h5401.01.patch
>
>
> Directory scanner is broken by previous changes, NPE exposed by
> TestDirectoryScanner
> {code}
> testDirectoryScanner(org.apache.hadoop.hdfs.server.datanode.TestDirectoryScanner)
> Time elapsed: 27.417 sec <<< ERROR!
> java.lang.NullPointerException: null
> at
> org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.checkAndUpdate(FsDatasetImpl.java:1419)
> at
> org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.reconcile(DirectoryScanner.java:405)
> at
> org.apache.hadoop.hdfs.server.datanode.TestDirectoryScanner.scan(TestDirectoryScanner.java:212)
> at
> org.apache.hadoop.hdfs.server.datanode.TestDirectoryScanner.runTest(TestDirectoryScanner.java:270)
> at org.ap
> {code}
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