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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9261) Erasure Coding: Skip encoding the data cells if all the parity data streamers are failed for the current block group
Date Tue, 27 Oct 2015 13:51:27 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14976415#comment-14976415
] 

Hadoop QA commented on HDFS-9261:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  20m 29s | Pre-patch trunk compilation is healthy. |
| {color:green}+1{color} | @author |   0m  0s | The patch does not contain any @author tags.
|
| {color:red}-1{color} | tests included |   0m  0s | The patch doesn't appear to include any
new or modified tests.  Please justify why no new tests are needed for this patch. Also please
list what manual steps were performed to verify this patch. |
| {color:green}+1{color} | javac |   9m  3s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |  11m 57s | There were no new javadoc warning messages.
|
| {color:green}+1{color} | release audit |   0m 24s | The applied patch does not increase
the total number of release audit warnings. |
| {color:green}+1{color} | checkstyle |   1m 45s | There were no new checkstyle issues. |
| {color:green}+1{color} | whitespace |   0m  0s | The patch has no lines that end in whitespace.
|
| {color:green}+1{color} | install |   1m 43s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 38s | The patch built with eclipse:eclipse.
|
| {color:green}+1{color} | findbugs |   2m 18s | The patch does not introduce any new Findbugs
(version 3.0.0) warnings. |
| {color:green}+1{color} | native |   3m 35s | Pre-build of native portion |
| {color:green}+1{color} | hdfs tests |   0m 32s | Tests passed in hadoop-hdfs-client. |
| | |  52m 27s | |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12768963/HDFS-9261-02.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / bcb2386 |
| hadoop-hdfs-client test log | https://builds.apache.org/job/PreCommit-HDFS-Build/13223/artifact/patchprocess/testrun_hadoop-hdfs-client.txt
|
| Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/13223/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf905.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed Sep
3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/13223/console |


This message was automatically generated.

> Erasure Coding: Skip encoding the data cells if all the parity data streamers are failed
for the current block group
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-9261
>                 URL: https://issues.apache.org/jira/browse/HDFS-9261
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Rakesh R
>            Assignee: Rakesh R
>            Priority: Minor
>         Attachments: HDFS-9261-00.patch, HDFS-9261-01.patch, HDFS-9261-02.patch
>
>
> {{DFSStripedOutputStream}} will continue writing with minimum number (dataBlockNum) of
live datanodes. It won't replace the failed datanodes immediately for the current block group.
Consider a case where all the parity data streamers are failed, now it is unnecessary to encode
the data block cells and generate the parity data. This is a corner case where it can skip
{{writeParityCells()}} step.



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