[
https://issues.apache.org/jira/browse/HADOOP-11847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14518919#comment-14518919
]
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 | 15m 10s | 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 6 new or modified test files. |
| {color:green}+1{color} | whitespace | 0m 0s | The patch has no lines that
end in whitespace. |
| {color:green}+1{color} | javac | 7m 42s | There were no new javac warning
messages. |
| {color:green}+1{color} | javadoc | 9m 54s | There were no new javadoc
warning messages. |
| {color:red}-1{color} | release audit | 0m 14s | The applied patch generated
1 release audit warnings. |
| {color:red}-1{color} | checkstyle | 4m 11s | The applied patch generated 2
additional checkstyle issues. |
| {color:green}+1{color} | install | 1m 36s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse | 0m 35s | The patch built with
eclipse:eclipse. |
| {color:red}-1{color} | findbugs | 1m 44s | The patch appears to introduce 2
new Findbugs (version 2.0.3) warnings. |
| {color:red}-1{color} | common tests | 23m 9s | Tests failed in
hadoop-common. |
| | | 64m 21s | |
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|| Reason || Tests ||
| FindBugs | module:hadoop-common |
| | Redundant nullcheck of fact, which is known to be non-null in
org.apache.hadoop.io.erasurecode.coder.AbstractErasureCoder.createRawCoder(Configuration,
String, boolean) Redundant null check at AbstractErasureCoder.java:is known
to be non-null in
org.apache.hadoop.io.erasurecode.coder.AbstractErasureCoder.createRawCoder(Configuration,
String, boolean) Redundant null check at AbstractErasureCoder.java:[line 93] |
| | Write to static field
org.apache.hadoop.io.erasurecode.rawcoder.AbstractRawErasureDecoder.ZERO_BYTES
from instance method
org.apache.hadoop.io.erasurecode.rawcoder.AbstractRawErasureDecoder.initialize(int,
int, int) At AbstractRawErasureDecoder.java:from instance method
org.apache.hadoop.io.erasurecode.rawcoder.AbstractRawErasureDecoder.initialize(int,
int, int) At AbstractRawErasureDecoder.java:[line 41] |
| Failed unit tests | hadoop.ha.TestZKFailoverController |
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|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12729074/HADOOP-11847-HDFS-7285-v3.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | HDFS-7285 / bd5cb59 |
| Release Audit |
https://builds.apache.org/job/PreCommit-HADOOP-Build/6212/artifact/patchprocess/patchReleaseAuditProblems.txt
|
| checkstyle |
https://builds.apache.org/job/PreCommit-HADOOP-Build/6212/artifact/patchprocess/checkstyle-result-diff.txt
|
| Findbugs warnings |
https://builds.apache.org/job/PreCommit-HADOOP-Build/6212/artifact/patchprocess/newPatchFindbugsWarningshadoop-common.html
|
| hadoop-common test log |
https://builds.apache.org/job/PreCommit-HADOOP-Build/6212/artifact/patchprocess/testrun_hadoop-common.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HADOOP-Build/6212/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf903.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/6212/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
> Attachments: HADOOP-11847-HDFS-7285-v3.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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