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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4538) allow use of legacy blockreader
Date Tue, 02 Apr 2013 20:15:18 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13620225#comment-13620225

Colin Patrick McCabe commented on HDFS-4538:

On March 5, you commented that you would check this JIRA out "as soon as you could" in the
HDFS-347 merge vote email thread.  A month later, I'm sad to hear that you still have not
had the opportunity to do this.  Since you were listed as a watcher on this JIRA, I assumed
that you had read it.  We are all pretty busy, I suppose.

Anyway, you need to set {{dfs.client.use.legacy.blockreader.local}} to true to use the legacy
block reader.  It defaults to false.
> allow use of legacy blockreader
> -------------------------------
>                 Key: HDFS-4538
>                 URL: https://issues.apache.org/jira/browse/HDFS-4538
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, hdfs-client, performance
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: HDFS-4538.001.patch, HDFS-4538.002.patch, HDFS-4538.003.patch, HDFS-4538.004.patch
> Some users might want to use the legacy block reader, because it is available on Windows,
whereas the secure solution has not yet been implemented there.  As described in the mailing
list discussion, let's enable this.

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