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https://issues.apache.org/jira/browse/HADOOP-9769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14546982#comment-14546982
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Eron Wright commented on HADOOP-9769:
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Looking forward to this. LocalFileSystem performance is quite bad (when
dealing with file existence, status, ownership, etc) assumedly due to shelling
out. Using MR FileInputFormat with thousands of local files is unbearably slow.
> Remove org.apache.hadoop.fs.Stat when JDK6 support is dropped
> -------------------------------------------------------------
>
> Key: HADOOP-9769
> URL: https://issues.apache.org/jira/browse/HADOOP-9769
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 3.0.0
> Reporter: Andrew Wang
> Priority: Minor
>
> HADOOP-9652 introduces a new class which shells out to stat(1) because of the
> lack of lstat(2) in Java 6. Java 7 has support for reading symlink targets
> via {{Files#readSymbolicLink}}.
> When Hadoop drops Java 6 support, let's use this more portable method instead.
> See:
> http://docs.oracle.com/javase/7/docs/api/java/nio/file/Files.html#readSymbolicLink(java.nio.file.Path)
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