hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Youwei Wang (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Deleted] (HDFS-8901) Use ByteBuffer in striping positional read
Date Mon, 01 Aug 2016 08:29:20 GMT

     [ https://issues.apache.org/jira/browse/HDFS-8901?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Youwei Wang updated HDFS-8901:
------------------------------
    Comment: was deleted

(was: New patch submitted.
File name: HDFS-8901.v14.patch
Based on commitid: 34ccaa8367f048ed9f56038efe7b3202c436b6e6
Commet: A small revision for the test class: TestDFSStripedInputStream.java)

> Use ByteBuffer in striping positional read
> ------------------------------------------
>
>                 Key: HDFS-8901
>                 URL: https://issues.apache.org/jira/browse/HDFS-8901
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Kai Zheng
>            Assignee: Youwei Wang
>         Attachments: HDFS-8901-v10.patch, HDFS-8901-v2.patch, HDFS-8901-v3.patch, HDFS-8901-v4.patch,
HDFS-8901-v5.patch, HDFS-8901-v6.patch, HDFS-8901-v7.patch, HDFS-8901-v8.patch, HDFS-8901-v9.patch,
HDFS-8901.v11.patch, HDFS-8901.v12.patch, HDFS-8901.v13.patch, initial-poc.patch
>
>
> Native erasure coder prefers to direct ByteBuffer for performance consideration. To prepare
for it, this change uses ByteBuffer through the codes in implementing striping position read.
It will also fix avoiding unnecessary data copying between striping read chunk buffers and
decode input buffers.



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

---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org


Mime
View raw message