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https://issues.apache.org/jira/browse/HDDS-1013?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16752871#comment-16752871
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Hanisha Koneru commented on HDDS-1013:
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Thank you [~bharatviswa] for the review.
I have updated the patch to address your comments.
> NPE while listing directories
> -----------------------------
>
> Key: HDDS-1013
> URL: https://issues.apache.org/jira/browse/HDDS-1013
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Filesystem
> Reporter: Arpit Agarwal
> Assignee: Hanisha Koneru
> Priority: Blocker
> Attachments: HDDS-1013.001.patch, HDDS-1013.002.patch
>
>
> The following sequence of steps on a fresh ozone install results in an NPE:
> {code}
> hadoop@50ddd1e1b186:~$ ozone sh volume create /volume1
> 2019-01-25 20:42:55 INFO RpcClient:257 - Creating Volume: volume1, with
> hadoop as owner and quota set to 1152921504606846976 bytes.
> hadoop@50ddd1e1b186:~$ ozone sh bucket create /volume1/bucket1
> 2019-01-25 20:43:20 INFO RpcClient:386 - Creating Bucket: volume1/bucket1,
> with Versioning false and Storage Type set to DISK
> hadoop@50ddd1e1b186:~$ ozone fs -fs o3fs://bucket1.volume1/ -mkdir /dir1
> hadoop@50ddd1e1b186:~$ ozone fs -fs o3fs://bucket1.volume1/ -mkdir /dir2
> hadoop@50ddd1e1b186:~$ ozone fs -fs o3fs://bucket1.volume1/ -mkdir /dir1/dir11
> hadoop@50ddd1e1b186:~$ ozone fs -fs o3fs://bucket1.volume1/ -mkdir /dir2/dir21
> hadoop@50ddd1e1b186:~$ ozone fs -fs o3fs://bucket1.volume1/ -ls /
> -ls: Fatal internal error
> java.lang.NullPointerException
> at
> org.apache.hadoop.fs.ozone.OzoneFileSystem.innerGetFileStatusForDir(OzoneFileSystem.java:708)
> at
> org.apache.hadoop.fs.ozone.OzoneFileSystem$ListStatusIterator.addSubDirStatus(OzoneFileSystem.java:553)
> at
> org.apache.hadoop.fs.ozone.OzoneFileSystem$ListStatusIterator.processKey(OzoneFileSystem.java:530)
> at
> org.apache.hadoop.fs.ozone.OzoneFileSystem$OzoneListingIterator.iterate(OzoneFileSystem.java:885)
> at
> org.apache.hadoop.fs.ozone.OzoneFileSystem.listStatus(OzoneFileSystem.java:594)
> at
> org.apache.hadoop.fs.shell.PathData.getDirectoryContents(PathData.java:269)
> at org.apache.hadoop.fs.shell.Command.recursePath(Command.java:439)
> at org.apache.hadoop.fs.shell.Ls.processPathArgument(Ls.java:226)
> at org.apache.hadoop.fs.shell.Command.processArgument(Command.java:286)
> at org.apache.hadoop.fs.shell.Command.processArguments(Command.java:270)
> at
> org.apache.hadoop.fs.shell.FsCommand.processRawArguments(FsCommand.java:120)
> at org.apache.hadoop.fs.shell.Command.run(Command.java:177)
> at org.apache.hadoop.fs.FsShell.run(FsShell.java:327)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
> at org.apache.hadoop.fs.FsShell.main(FsShell.java:390)
> {code}
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