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From "Konstantin Boudnik (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-483) Data transfer (aka pipeline) implementation cannot tolerate exceptions
Date Mon, 20 Jul 2009 18:42:14 GMT

    [ https://issues.apache.org/jira/browse/HDFS-483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12733314#action_12733314

Konstantin Boudnik commented on HDFS-483:

Although I am not completely sure about the future plans of the development of these tests,
but it seems that the second parameter of DoosAction and OomAction hasn't been used by anything
but  the constructor itself.
    final int index;

     DoosAction(String currentTest, int index) {
      this.currentTest = currentTest;
      this.index = index;

and it seems to be the only reference to this member.

Also, it seems that non of newly created public methods/aspects have JavaDocs.

> Data transfer (aka pipeline) implementation cannot tolerate exceptions
> ----------------------------------------------------------------------
>                 Key: HDFS-483
>                 URL: https://issues.apache.org/jira/browse/HDFS-483
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node, hdfs client
>            Reporter: Tsz Wo (Nicholas), SZE
>         Attachments: h483_20090709.patch, h483_20090713.patch, h483_20090717.patch
> Data transfer was tested with simulated exceptions as below:
> # create files with dfs
> # write 1 byte
> # close file
> # open the same file
> # read the 1 byte and compare results
> The file was closed successfully but we got an IOException(Could not get block locations...)
when the file was reopened for reading.

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