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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8235) Create DFSStripedInputStream in DFSClient#open
Date Fri, 24 Apr 2015 17:38:39 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14511401#comment-14511401
] 

Jing Zhao commented on HDFS-8235:
---------------------------------

The patch looks good to me overall. Some further optimization that we can do:
# {{getErasureCodingInfo}} is called twice for {{DFSStripedInputStream}}: one in {{DFSClient#open}},
the other in {{DFSStripedInputStream}}'s constructor. Thus we can change {{DFSStripedInputStream}}'s
constructor and pass the ecinfo as a parameter.
# With the patch now we can directly use {{FileSystem#open}} in {{TestDFSStripedInputStream#testOneFileUsingDFSStripedInputStream}}.

> Create DFSStripedInputStream in DFSClient#open
> ----------------------------------------------
>
>                 Key: HDFS-8235
>                 URL: https://issues.apache.org/jira/browse/HDFS-8235
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Jing Zhao
>            Assignee: Kai Sasaki
>         Attachments: HDFS-8235.1.patch
>
>
> Currently DFSClient#open can only create a DFSInputStream object. It should also support
DFSStripedInputStream.



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