hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Xiaoyu Yao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-6990) Add unit test for evict/delete RAM_DISK block with open handle
Date Mon, 22 Sep 2014 22:25:34 GMT

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

Xiaoyu Yao updated HDFS-6990:
-----------------------------
    Attachment: HDFS-6990.2.patch

Update the patch with SCR reader counter check and the eviction validation. 

> 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
>         Attachments: HDFS-6990.0.patch, HDFS-6990.1.patch, HDFS-6990.2.patch
>
>
> 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.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message