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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7889) Subclass DFSOutputStream to support writing striping layout files
Date Fri, 10 Apr 2015 06:15:13 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14489014#comment-14489014
] 

Zhe Zhang commented on HDFS-7889:
---------------------------------

bq. Maybe we could have isStripped in stat?
I agree. I added the {{getReplication() == 0}} logic just to get it work before we have that
in the stat.

Today I also took some time to debug and 011 patch has some fixes (sorry for posting it late,
my main changes are in the test code, and BlockManager). I opened a separate JIRA for the
{{StripingUtil}} part (HDFS-8120).

# I think we can just write the file as usual, without {{WhiteBox}}. 
{code}
      DFSTestUtil.writeFile(fs, TestPath, new String(bytes));
{code}
# Now {{TestFileMoreThanABlockGroup2}} still fails with some content error. I don't have a
clue yet.

> Subclass DFSOutputStream to support writing striping layout files
> -----------------------------------------------------------------
>
>                 Key: HDFS-7889
>                 URL: https://issues.apache.org/jira/browse/HDFS-7889
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Li Bo
>            Assignee: Li Bo
>         Attachments: HDFS-7889-001.patch, HDFS-7889-002.patch, HDFS-7889-003.patch, HDFS-7889-004.patch,
HDFS-7889-005.patch, HDFS-7889-006.patch, HDFS-7889-007.patch, HDFS-7889-008.patch, HDFS-7889-009.patch,
HDFS-7889-010.patch, HDFS-7889-011.patch
>
>
> After HDFS-7888, we can subclass  {{DFSOutputStream}} to support writing striping layout
files. 



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