[jira] Commented: (HADOOP-5999) Support for concatenating of files into a single file

["Owen O'Malley (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-5999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12717845#action_12717845 ] 

Owen O'Malley commented on HADOOP-5999:
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I don't think this is a good feature to expose. It has the unfortunate characteristic that it will perform very badly on most file systems and even in some non-trivial cases of HDFS. Take for instance the case where the files have different replication factors or block sizes.

> Support for concatenating of files into a single file
> -----------------------------------------------------
>
>                 Key: HADOOP-5999
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5999
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: dfs
>            Reporter: Venkatesh S
>
> An API to concatenate files of same size and replication factor on HDFS into a single larger file.

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