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https://issues.apache.org/jira/browse/HDFS-11975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16112278#comment-16112278
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Hadoop QA commented on HDFS-11975:
----------------------------------

| (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 
14s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
0s{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m 
 1s{color} | {color:green} The patch appears to include 3 new or modified test 
files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
24s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 13m 
55s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 
26s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
48s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m 
27s{color} | {color:green} trunk passed {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  1m 
23s{color} | {color:red} hadoop-hdfs-project/hadoop-hdfs-client in trunk has 2 
extant Findbugs warnings. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  1m 
39s{color} | {color:red} hadoop-hdfs-project/hadoop-hdfs in trunk has 9 extant 
Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m  
1s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m  
8s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 
20s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 
24s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green}  1m 
24s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m 
24s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
0m 45s{color} | {color:orange} hadoop-hdfs-project: The patch generated 3 new + 
571 unchanged - 0 fixed = 574 total (was 571) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m 
23s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} xml {color} | {color:green}  0m  
2s{color} | {color:green} The patch has no ill-formed XML file. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  3m 
15s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
59s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  1m 
12s{color} | {color:green} hadoop-hdfs-client in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 71m 48s{color} 
| {color:red} hadoop-hdfs in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
17s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}106m 18s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | 
hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureReporting |
|   | hadoop.hdfs.TestDFSStripedInputStreamWithRandomECPolicy |
|   | hadoop.hdfs.TestDFSStripedOutputStreamWithFailure140 |
|   | hadoop.hdfs.server.blockmanagement.TestRBWBlockInvalidation |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:14b5c93 |
| JIRA Issue | HDFS-11975 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12880160/HDFS-11975-009.patch |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  findbugs  checkstyle  cc  xml  |
| uname | Linux fb7f919d0397 3.13.0-119-generic #166-Ubuntu SMP Wed May 3 
12:18:55 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh 
|
| git revision | trunk / 79df1e7 |
| Default Java | 1.8.0_131 |
| findbugs | v3.1.0-RC1 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HDFS-Build/20542/artifact/patchprocess/branch-findbugs-hadoop-hdfs-project_hadoop-hdfs-client-warnings.html
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HDFS-Build/20542/artifact/patchprocess/branch-findbugs-hadoop-hdfs-project_hadoop-hdfs-warnings.html
 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HDFS-Build/20542/artifact/patchprocess/diff-checkstyle-hadoop-hdfs-project.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HDFS-Build/20542/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/20542/testReport/ |
| modules | C: hadoop-hdfs-project/hadoop-hdfs-client 
hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project |
| Console output | 
https://builds.apache.org/job/PreCommit-HDFS-Build/20542/console |
| Powered by | Apache Yetus 0.6.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Provide a system-default EC policy
> ----------------------------------
>
>                 Key: HDFS-11975
>                 URL: https://issues.apache.org/jira/browse/HDFS-11975
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: erasure-coding
>    Affects Versions: 3.0.0-alpha3
>            Reporter: Lei (Eddy) Xu
>            Assignee: luhuichun
>         Attachments: HDFS-11975-001.patch, HDFS-11975-002.patch, 
> HDFS-11975-003.patch, HDFS-11975-004.patch, HDFS-11975-005.patch, 
> HDFS-11975-006.patch, HDFS-11975-007.patch, HDFS-11975-008.patch, 
> HDFS-11975-009.patch
>
>
> From the usability point of view, it'd be nice to be able to specify a 
> system-wide EC policy, i.e., in {{hdfs-site.xml}}. For most of users / admin 
> / downstream projects, it is not necessary to know the tradeoffs of the EC 
> policy, considering that it requires the knowledge of EC, the actual physical 
> topology of the clusters, and many other factors (i.e., network, cluster size 
> and etc).
>  



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