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https://issues.apache.org/jira/browse/HADOOP-11847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14558054#comment-14558054
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Hadoop QA commented on HADOOP-11847:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch | 14m 41s | Pre-patch HDFS-7285 compilation
is healthy. |
| {color:green}+1{color} | @author | 0m 0s | The patch does not contain any
@author tags. |
| {color:green}+1{color} | tests included | 0m 0s | The patch appears to
include 5 new or modified test files. |
| {color:green}+1{color} | javac | 7m 30s | There were no new javac warning
messages. |
| {color:green}+1{color} | javadoc | 9m 40s | There were no new javadoc
warning messages. |
| {color:red}-1{color} | release audit | 0m 15s | The applied patch generated
1 release audit warnings. |
| {color:red}-1{color} | checkstyle | 1m 5s | The applied patch generated 4
new checkstyle issues (total was 18, now 22). |
| {color:green}+1{color} | whitespace | 0m 7s | The patch has no lines that
end in whitespace. |
| {color:green}+1{color} | install | 1m 34s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse | 0m 33s | The patch built with
eclipse:eclipse. |
| {color:green}+1{color} | findbugs | 1m 42s | The patch does not introduce
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | common tests | 22m 52s | Tests passed in
hadoop-common. |
| | | 60m 4s | |
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|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12735127/HADOOP-11847-HDFS-7285-v7.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | HDFS-7285 / f803fd3 |
| Release Audit |
https://builds.apache.org/job/PreCommit-HADOOP-Build/6816/artifact/patchprocess/patchReleaseAuditProblems.txt
|
| checkstyle |
https://builds.apache.org/job/PreCommit-HADOOP-Build/6816/artifact/patchprocess/diffcheckstylehadoop-common.txt
|
| hadoop-common test log |
https://builds.apache.org/job/PreCommit-HADOOP-Build/6816/artifact/patchprocess/testrun_hadoop-common.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HADOOP-Build/6816/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf906.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-HADOOP-Build/6816/console |
This message was automatically generated.
> Enhance raw coder allowing to read least required inputs in decoding
> --------------------------------------------------------------------
>
> Key: HADOOP-11847
> URL: https://issues.apache.org/jira/browse/HADOOP-11847
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: io
> Reporter: Kai Zheng
> Assignee: Kai Zheng
> Labels: BB2015-05-TBR
> Attachments: HADOOP-11847-HDFS-7285-v3.patch,
> HADOOP-11847-HDFS-7285-v4.patch, HADOOP-11847-HDFS-7285-v5.patch,
> HADOOP-11847-HDFS-7285-v6.patch, HADOOP-11847-HDFS-7285-v7.patch,
> HADOOP-11847-v1.patch, HADOOP-11847-v2.patch
>
>
> This is to enhance raw erasure coder to allow only reading least required
> inputs while decoding. It will also refine and document the relevant APIs for
> better understanding and usage. When using least required inputs, it may add
> computating overhead but will possiblly outperform overall since less network
> traffic and disk IO are involved.
> This is something planned to do but just got reminded by [~zhz]' s question
> raised in HDFS-7678, also copied here:
> bq.Kai Zheng I have a question about decoding: in a (6+3) schema, if block #2
> is missing, and I want to repair it with blocks 0, 1, 3, 4, 5, 8, how should
> I construct the inputs to RawErasureDecoder#decode?
> With this work, hopefully the answer to above question would be obvious.
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