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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5191) revisit zero-copy API in FSDataInputStream to make it more intuitive
Date Tue, 24 Sep 2013 20:11:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13776686#comment-13776686
] 

Colin Patrick McCabe commented on HDFS-5191:
--------------------------------------------

bq. Change readZeroOptionsFree to hadoopRzOptionsFree.

fixed this and others

bq. Setting cachedEnumSet to NULL isn't required here, because hadoopRzOptionsClearCached
already does it.

removed

bq. There is still an UnsupportedOperationException thrown in the "fallback fallback" case...

Fixed, based on your suggestion.  Thanks.
                
> revisit zero-copy API in FSDataInputStream to make it more intuitive
> --------------------------------------------------------------------
>
>                 Key: HDFS-5191
>                 URL: https://issues.apache.org/jira/browse/HDFS-5191
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: hdfs-client, libhdfs
>    Affects Versions: HDFS-4949
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: HDFS-5191-caching.001.patch, HDFS-5191-caching.003.patch, HDFS-5191-caching.006.patch,
HDFS-5191-caching.007.patch, HDFS-5191-caching.008.patch, HDFS-5191-caching.009.patch, HDFS-5191-caching.010.patch
>
>
> As per the discussion on HDFS-4953, we should revisit the zero-copy API to make it more
intuitive for new users.

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