[jira] [Created] (HDFS-4707) Fix FilterFileSystem and findbugs warning in Snapshot branch

["Tsz Wo (Nicholas), SZE (JIRA)" <ji...@apache.org>]

Tsz Wo (Nicholas), SZE created HDFS-4707:
--------------------------------------------

             Summary: Fix FilterFileSystem and findbugs warning in Snapshot branch
                 Key: HDFS-4707
                 URL: https://issues.apache.org/jira/browse/HDFS-4707
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Tsz Wo (Nicholas), SZE
            Assignee: Tsz Wo (Nicholas), SZE


The snapshot methods are not added to FilterFileSystem.

Findbugs warnings:
- SIC 	Should snapshot.Snapshot$Root be a _static_ inner class?
- WMI 	Method FSImageFormat$Saver.saveImage(ByteBuffer, INodeDirectory, DataOutputStream, Snapshot, boolean) makes inefficient use of keySet iterator instead of entrySet iterator
- BC 	Unchecked/unconfirmed cast from FSImageSerialization.writeINodeFile(INodeFile, DataOutput, boolean)
- BC 	Unchecked/unconfirmed cast from snapshot.SnapshotFSImageFormat.loadDirectoryDiffList(INodeDirectory, DataInput, FSImageFormat$Loader)



--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira