[jira] Updated: (HADOOP-3025) ChecksumFileSystem needs to support the new delete method

["Mahadev konar (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-3025?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mahadev konar updated HADOOP-3025:
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    Attachment: HADOOP_3025_1.patch

attaching patch for this. I havent added a unit test. Will add shortly.. mukund can you try with this patch?

> ChecksumFileSystem needs to support the new delete method
> ---------------------------------------------------------
>
>                 Key: HADOOP-3025
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3025
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 0.17.0
>            Reporter: Devaraj Das
>            Assignee: Mahadev konar
>            Priority: Blocker
>             Fix For: 0.17.0
>
>         Attachments: HADOOP_3025_1.patch
>
>
> The method FileSystem.delete(path) has been deprecated in favor of the new method delete(path, recursive). Temporary files gets created in the MapReduce framework and when the time for deletion comes, they are deleted via delete(path, recursive). This doesn't delete the associated checksum files. This has a big impact when the FileSystem is the InMemoryFileSystem, where space is at a premium and wasting space here might hurt the performance of MapReduce jobs overall. One solution to this problem is to implement the method delete(path, recursive) in the ChecksumFileSystem but is there is a reason why it was left out as part of HADOOP-771?

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