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From "Virajith Jalaparti (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-9809) Abstract implementation-specific details from the datanode
Date Wed, 31 Aug 2016 21:26:20 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Virajith Jalaparti updated HDFS-9809:
-------------------------------------
    Attachment: DFSIO_benchmark_HDFS-9809.docx

The doc attached shows the results of running DFSIO benchmark with trunk and HDFS-9809 applied
on trunk (with the patches from HDFS-10636, HDFS-10637, and HDFS-10638 applied in that order).
The results show that there is no statistically significant difference in the performance
of the two builds (value +/- std deviations overlap). 

> Abstract implementation-specific details from the datanode
> ----------------------------------------------------------
>
>                 Key: HDFS-9809
>                 URL: https://issues.apache.org/jira/browse/HDFS-9809
>             Project: Hadoop HDFS
>          Issue Type: Task
>          Components: datanode, fs
>            Reporter: Virajith Jalaparti
>            Assignee: Virajith Jalaparti
>         Attachments: DFSIO_benchmark_HDFS-9809.docx, HDFS-9809.001.patch, HDFS-9809.002.patch,
HDFS-9809.003.patch, HDFS-9809.004.patch
>
>
> Multiple parts of the Datanode (FsVolumeSpi, ReplicaInfo, FSVolumeImpl etc.) implicitly
assume that blocks are stored in java.io.File(s) and that volumes are divided into directories.
We propose to abstract these details, which would help in supporting other storages. 



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