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https://issues.apache.org/jira/browse/HDFS-12818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16254177#comment-16254177
 ] 

Hadoop QA commented on HDFS-12818:
----------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 18m  
6s{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 
 0s{color} | {color:green} The patch appears to include 3 new or modified test 
files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 19m 
30s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m  
4s{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 
12s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
11m 57s{color} | {color:green} branch has no errors when building and testing 
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 
59s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
53s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 
 8s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m  
0s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m  
0s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
0m 42s{color} | {color:orange} hadoop-hdfs-project/hadoop-hdfs: The patch 
generated 5 new + 206 unchanged - 8 fixed = 211 total (was 214) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  
5s{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} shadedclient {color} | {color:green} 
11m 26s{color} | {color:green} patch has no errors when building and testing 
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m  
7s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
51s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 54m 54s{color} 
| {color:red} hadoop-hdfs in the patch failed. {color} |
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red}  0m 
25s{color} | {color:red} The patch generated 525 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}128m 40s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| Unreaped Processes | hadoop-hdfs:6 |
| Failed junit tests | hadoop.hdfs.web.TestWebHdfsTimeouts |
|   | hadoop.hdfs.server.balancer.TestBalancerWithEncryptedTransfer |
|   | hadoop.hdfs.TestHDFSFileSystemContract |
|   | hadoop.hdfs.server.balancer.TestBalancerWithHANameNodes |
|   | hadoop.hdfs.server.balancer.TestBalancerWithSaslDataTransfer |
|   | hadoop.hdfs.TestSetrepDecreasing |
|   | hadoop.hdfs.server.balancer.TestBalancer |
|   | hadoop.hdfs.TestSafeModeWithStripedFile |
|   | hadoop.hdfs.TestWriteReadStripedFile |
|   | hadoop.hdfs.server.balancer.TestBalancerWithMultipleNameNodes |
|   | hadoop.hdfs.TestDFSStripedOutputStreamWithFailure110 |
|   | hadoop.hdfs.TestDFSClientRetries |
|   | hadoop.hdfs.server.balancer.TestBalancerRPCDelay |
| Timed out junit tests | org.apache.hadoop.hdfs.TestLeaseRecovery2 |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:5b98639 |
| JIRA Issue | HDFS-12818 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12897817/HDFS-12818.000.patch |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  shadedclient  findbugs  checkstyle  |
| uname | Linux 3320c2b4ee87 3.13.0-135-generic #184-Ubuntu SMP Wed Oct 18 
11:55:51 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / fac72ee |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_151 |
| findbugs | v3.1.0-RC1 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HDFS-Build/22102/artifact/out/diff-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt
 |
| Unreaped Processes Log | 
https://builds.apache.org/job/PreCommit-HDFS-Build/22102/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs-reaper.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HDFS-Build/22102/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/22102/testReport/ |
| asflicense | 
https://builds.apache.org/job/PreCommit-HDFS-Build/22102/artifact/out/patch-asflicense-problems.txt
 |
| Max. process+thread count | 2702 (vs. ulimit of 5000) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U: 
hadoop-hdfs-project/hadoop-hdfs |
| Console output | 
https://builds.apache.org/job/PreCommit-HDFS-Build/22102/console |
| Powered by | Apache Yetus 0.7.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Support multiple storages in DataNodeCluster / SimulatedFSDataset
> -----------------------------------------------------------------
>
>                 Key: HDFS-12818
>                 URL: https://issues.apache.org/jira/browse/HDFS-12818
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode, test
>            Reporter: Erik Krogen
>            Assignee: Erik Krogen
>            Priority: Minor
>         Attachments: HDFS-12818.000.patch
>
>
> Currently {{SimulatedFSDataset}} (and thus, {{DataNodeCluster}} with 
> {{-simulated}}) only supports a single storage per {{DataNode}}. Given that 
> the number of storages can have important implications on the performance of 
> block report processing, it would be useful for these classes to support a 
> multiple storage configuration.



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