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https://issues.apache.org/jira/browse/HADOOP-8054?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13206992#comment-13206992
]
Daryn Sharp commented on HADOOP-8054:
-------------------------------------
The "problem" with reverting the change is that the contained filesystem, which
has already been initialized, will be re-initialized with the uri of the
filter. Since {{LocalFileSystem}} instantiates a {{RawLocalFileSystem}} with
no conf, it's probably safer for {{LocalFileSystem#initialize}} to just call
{{setConf}} on the raw filesystem.
> NPE with RawLocalFileSystem
> ---------------------------
>
> Key: HADOOP-8054
> URL: https://issues.apache.org/jira/browse/HADOOP-8054
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 0.23.1
> Reporter: Amareshwari Sriramadasu
> Assignee: Amareshwari Sriramadasu
> Priority: Critical
> Attachments: HADOOP-8054.patch
>
>
> While running Hive tests, I'm seeing the following exception with 0.23.1,
> {noformat}
> ava.lang.NullPointerException
> at
> org.apache.hadoop.fs.FileSystem.getDefaultBlockSize(FileSystem.java:1901)
> at
> org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:447)
> at
> org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:351)
> at
> org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:351)
> at
> org.apache.hadoop.fs.ProxyFileSystem.getFileStatus(ProxyFileSystem.java:247)
> at
> org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:351)
> at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1165)
> at org.apache.hadoop.fs.FileUtil.checkDest(FileUtil.java:390)
> at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:242)
> at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:232)
> {noformat}
> Did not see this with 0.23.0, though.
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