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From "Xiaoyu Yao (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-6990) Add unit test for evict/delete RAM_DISK block with open handle
Date Wed, 03 Sep 2014 05:48:52 GMT
Xiaoyu Yao created HDFS-6990:
--------------------------------

             Summary: 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 on non-Mac OS.



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