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https://issues.apache.org/jira/browse/HDFS-9205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14950026#comment-14950026
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Hadoop QA commented on HDFS-9205:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  18m 19s | Pre-patch trunk 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 2 new or modified test files. |
| {color:green}+1{color} | javac |   8m 11s | There were no new javac warning 
messages. |
| {color:green}+1{color} | javadoc |  10m 16s | There were no new javadoc 
warning messages. |
| {color:red}-1{color} | release audit |   0m 19s | The applied patch generated 
1 release audit warnings. |
| {color:red}-1{color} | checkstyle |   1m 28s | The applied patch generated  8 
new checkstyle issues (total was 203, now 207). |
| {color:red}-1{color} | whitespace |   0m  1s | The patch has 1  line(s) that 
end in whitespace. Use git apply --whitespace=fix. |
| {color:green}+1{color} | install |   1m 31s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 32s | The patch built with 
eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   2m 32s | The patch does not introduce 
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | native |   3m 14s | Pre-build of native portion |
| {color:red}-1{color} | hdfs tests | 184m 37s | Tests failed in hadoop-hdfs. |
| | | 231m  3s | |
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|| Reason || Tests ||
| Failed unit tests | hadoop.hdfs.server.namenode.ha.TestStandbyCheckpoints |
|   | hadoop.hdfs.server.datanode.TestDataNodeMetrics |
|   | hadoop.hdfs.server.datanode.TestDirectoryScanner |
|   | hadoop.hdfs.server.namenode.TestFSImageWithSnapshot |
|   | hadoop.hdfs.TestDFSShell |
| Timed out tests | org.apache.hadoop.hdfs.TestReplication |
|   | org.apache.hadoop.hdfs.TestDecommission |
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|| Subsystem || Report/Notes ||
| Patch URL | 
http://issues.apache.org/jira/secure/attachment/12765729/h9205_20151009b.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / e1bf8b3 |
| Release Audit | 
https://builds.apache.org/job/PreCommit-HDFS-Build/12880/artifact/patchprocess/patchReleaseAuditProblems.txt
 |
| checkstyle |  
https://builds.apache.org/job/PreCommit-HDFS-Build/12880/artifact/patchprocess/diffcheckstylehadoop-hdfs.txt
 |
| whitespace | 
https://builds.apache.org/job/PreCommit-HDFS-Build/12880/artifact/patchprocess/whitespace.txt
 |
| hadoop-hdfs test log | 
https://builds.apache.org/job/PreCommit-HDFS-Build/12880/artifact/patchprocess/testrun_hadoop-hdfs.txt
 |
| Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/12880/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf901.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/12880/console |


This message was automatically generated.

> Do not schedule corrupt blocks for replication
> ----------------------------------------------
>
>                 Key: HDFS-9205
>                 URL: https://issues.apache.org/jira/browse/HDFS-9205
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Tsz Wo Nicholas Sze
>            Priority: Minor
>         Attachments: h9205_20151007.patch, h9205_20151007b.patch, 
> h9205_20151008.patch, h9205_20151009.patch, h9205_20151009b.patch
>
>
> Corrupted blocks by definition are blocks cannot be read. As a consequence, 
> they cannot be replicated.  In UnderReplicatedBlocks, there is a queue for 
> QUEUE_WITH_CORRUPT_BLOCKS and chooseUnderReplicatedBlocks may choose blocks 
> from it.  It seems that scheduling corrupted block for replication is wasting 
> resource and potentially slow down replication for the higher priority blocks.



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