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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-6990) Add unit test for evict/delete RAM_DISK block with open handle
Date Wed, 03 Sep 2014 05:51:52 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6990?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arpit Agarwal updated HDFS-6990:
--------------------------------
    Description: 
This is to verify:
* Evict RAM_DISK block with open handle should fall back to DISK.
* Delete RAM_DISK block (persisted) with open handle should mark the block to be deleted upon
handle close. 

Simply open handle to file in DFS name space won't work as expected. We need a local FS file
handle to the block file. The only meaningful case is for Short Circuit Read. This JIRA is
to validate/enable the two cases with SCR enabled MiniDFSCluster.

  was:
This is to verify:
* Evict RAM_DISK block with open handle should fall back to DISK.
* Delete RAM_DISK block (persisted) with open handle should mark the block to be deleted upon
handle close. 

Simply open handle to file in DFS name space won't work as expected. We need a local FS file
handle to the block file. The only meaningful case is for Short Circuit Read. This JIRA is
to validate/enable the two cases with SCR enabled MiniDFSCluster on non-Mac OS.


> Add unit test for evict/delete RAM_DISK block with open handle
> --------------------------------------------------------------
>
>                 Key: HDFS-6990
>                 URL: https://issues.apache.org/jira/browse/HDFS-6990
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode
>            Reporter: Xiaoyu Yao
>            Assignee: Xiaoyu Yao
>
> This is to verify:
> * Evict RAM_DISK block with open handle should fall back to DISK.
> * Delete RAM_DISK block (persisted) with open handle should mark the block to be deleted
upon handle close. 
> Simply open handle to file in DFS name space won't work as expected. We need a local
FS file handle to the block file. The only meaningful case is for Short Circuit Read. This
JIRA is to validate/enable the two cases with SCR enabled MiniDFSCluster.



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