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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8287) DFSStripedOutputStream.writeChunk should not wait for writing parity
Date Thu, 12 May 2016 06:44:13 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15281258#comment-15281258
] 

Hadoop QA commented on HDFS-8287:
---------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 0s {color} | {color:blue}
Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 5s {color} | {color:red}
HDFS-8287 does not apply to trunk. Rebase required? Wrong Branch? See https://wiki.apache.org/hadoop/HowToContribute
for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12767729/HDFS-8287.15.patch
|
| JIRA Issue | HDFS-8287 |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/15416/console |
| Powered by | Apache Yetus 0.2.0   http://yetus.apache.org |


This message was automatically generated.



> DFSStripedOutputStream.writeChunk should not wait for writing parity 
> ---------------------------------------------------------------------
>
>                 Key: HDFS-8287
>                 URL: https://issues.apache.org/jira/browse/HDFS-8287
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: erasure-coding, hdfs-client
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Kai Sasaki
>         Attachments: HDFS-8287-HDFS-7285.00.patch, HDFS-8287-HDFS-7285.01.patch, HDFS-8287-HDFS-7285.02.patch,
HDFS-8287-HDFS-7285.03.patch, HDFS-8287-HDFS-7285.04.patch, HDFS-8287-HDFS-7285.05.patch,
HDFS-8287-HDFS-7285.06.patch, HDFS-8287-HDFS-7285.07.patch, HDFS-8287-HDFS-7285.08.patch,
HDFS-8287-HDFS-7285.09.patch, HDFS-8287-HDFS-7285.10.patch, HDFS-8287-HDFS-7285.11.patch,
HDFS-8287-HDFS-7285.WIP.patch, HDFS-8287-performance-report.pdf, HDFS-8287.12.patch, HDFS-8287.13.patch,
HDFS-8287.14.patch, HDFS-8287.15.patch, h8287_20150911.patch, jstack-dump.txt
>
>
> When a stripping cell is full, writeChunk computes and generates parity packets.  It
sequentially calls waitAndQueuePacket so that user client cannot continue to write data until
it finishes.
> We should allow user client to continue writing instead but not blocking it when writing
parity.



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