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https://issues.apache.org/jira/browse/HDFS-7967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15819548#comment-15819548
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Hadoop QA commented on HDFS-7967:
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| (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
27s{color} | {color:blue} Docker mode activated. {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 2 new or modified test
files. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 9m
9s{color} | {color:green} branch-2.8 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
43s{color} | {color:green} branch-2.8 passed with JDK v1.8.0_111 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
45s{color} | {color:green} branch-2.8 passed with JDK v1.7.0_121 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
25s{color} | {color:green} branch-2.8 passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
54s{color} | {color:green} branch-2.8 passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
17s{color} | {color:green} branch-2.8 passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m
59s{color} | {color:green} branch-2.8 passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
56s{color} | {color:green} branch-2.8 passed with JDK v1.8.0_111 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
36s{color} | {color:green} branch-2.8 passed with JDK v1.7.0_121 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
45s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
40s{color} | {color:green} the patch passed with JDK v1.8.0_111 {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red} 0m 40s{color}
| {color:red} hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_111 with JDK v1.8.0_111
generated 2 new + 43 unchanged - 2 fixed = 45 total (was 45) {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
41s{color} | {color:green} the patch passed with JDK v1.7.0_121 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
41s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}
0m 22s{color} | {color:orange} hadoop-hdfs-project/hadoop-hdfs: The patch
generated 5 new + 457 unchanged - 13 fixed = 462 total (was 470) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
51s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
13s{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} findbugs {color} | {color:green} 2m
7s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
56s{color} | {color:green} the patch passed with JDK v1.8.0_111 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
37s{color} | {color:green} the patch passed with JDK v1.7.0_121 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 66m
37s{color} | {color:green} hadoop-hdfs in the patch passed with JDK v1.7.0_121.
{color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
21s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}179m 26s{color} |
{color:black} {color} |
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|| Reason || Tests ||
| JDK v1.8.0_111 Timed out junit tests |
org.apache.hadoop.hdfs.TestLeaseRecovery2 |
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|| Subsystem || Report/Notes ||
| Docker | Image:yetus/hadoop:5af2af1 |
| JIRA Issue | HDFS-7967 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12847070/HDFS-7967.branch-2.8.003.patch
|
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit findbugs checkstyle |
| uname | Linux 57eaec54b654 3.13.0-96-generic #143-Ubuntu SMP Mon Aug 29
20:15:20 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh
|
| git revision | branch-2.8 / e32cd52 |
| Default Java | 1.7.0_121 |
| Multi-JDK versions | /usr/lib/jvm/java-8-oracle:1.8.0_111
/usr/lib/jvm/java-7-openjdk-amd64:1.7.0_121 |
| findbugs | v3.0.0 |
| javac |
https://builds.apache.org/job/PreCommit-HDFS-Build/18153/artifact/patchprocess/diff-compile-javac-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_111.txt
|
| checkstyle |
https://builds.apache.org/job/PreCommit-HDFS-Build/18153/artifact/patchprocess/diff-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt
|
| JDK v1.7.0_121 Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/18153/testReport/ |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U:
hadoop-hdfs-project/hadoop-hdfs |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/18153/console |
| Powered by | Apache Yetus 0.5.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> Reduce the performance impact of the balancer
> ---------------------------------------------
>
> Key: HDFS-7967
> URL: https://issues.apache.org/jira/browse/HDFS-7967
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Affects Versions: 2.0.0-alpha
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Priority: Critical
> Attachments: HDFS-7967-branch-2.8.patch, HDFS-7967-branch-2.patch,
> HDFS-7967.branch-2-1.patch, HDFS-7967.branch-2.001.patch,
> HDFS-7967.branch-2.002.patch, HDFS-7967.branch-2.8-1.patch,
> HDFS-7967.branch-2.8.001.patch, HDFS-7967.branch-2.8.002.patch,
> HDFS-7967.branch-2.8.003.patch
>
>
> The balancer needs to query for blocks to move from overly full DNs. The
> block lookup is extremely inefficient. An iterator of the node's blocks is
> created from the iterators of its storages' blocks. A random number is
> chosen corresponding to how many blocks will be skipped via the iterator.
> Each skip requires costly scanning of triplets.
> The current design also only considers node imbalances while ignoring
> imbalances within the nodes's storages. A more efficient and intelligent
> design may eliminate the costly skipping of blocks via round-robin selection
> of blocks from the storages based on remaining capacity.
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