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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7663) Erasure Coding: Append on striped file
Date Tue, 13 Dec 2016 09:18:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7663?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15744653#comment-15744653
] 

Hadoop QA commented on HDFS-7663:
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| (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  7s{color} | {color:red}
HDFS-7663 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 Issue | HDFS-7663 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12772107/HDFS-7663.01.patch
|
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/17848/console |
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This message was automatically generated.



> Erasure Coding: Append on striped file
> --------------------------------------
>
>                 Key: HDFS-7663
>                 URL: https://issues.apache.org/jira/browse/HDFS-7663
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Jing Zhao
>            Assignee: Walter Su
>         Attachments: HDFS-7663.00.txt, HDFS-7663.01.patch
>
>
> Append should be easy if we have variable length block support from HDFS-3689, i.e.,
the new data will be appended to a new block. We need to revisit whether and how to support
appending data to the original last block.
> 1. Append to a closed striped file, with NEW_BLOCK flag enabled (this)
> 2. Append to a under-construction striped file, with NEW_BLOCK flag enabled (HDFS-9173)
> 3. Append to a striped file, by appending to last block group (follow-on)
> This jira attempts to implement the #1, and also track #2, #3.



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