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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7955) Improve naming of classes, methods, and variables related to block replication and recovery
Date Thu, 28 Jan 2016 07:26:40 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7955?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15120935#comment-15120935
] 

Hadoop QA commented on HDFS-7955:
---------------------------------

| (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 0s {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 6 new or modified test files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 23s {color} | {color:blue}
Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 6m 40s {color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 17s {color} |
{color:green} trunk passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 20s {color} |
{color:green} trunk passed with JDK v1.7.0_91 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 33s {color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m 25s {color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 25s {color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 3m 46s {color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 23s {color} |
{color:green} trunk passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 2m 11s {color} |
{color:green} trunk passed with JDK v1.7.0_91 {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 16s {color} | {color:blue}
Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 14s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 9s {color} | {color:green}
the patch passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green} 1m 9s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 9s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 15s {color} |
{color:green} the patch passed with JDK v1.7.0_91 {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green} 1m 15s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 15s {color} | {color:green}
the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m 31s {color} | {color:red}
hadoop-hdfs-project: patch generated 46 new + 586 unchanged - 23 fixed = 632 total (was 609)
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| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m 20s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 22s {color}
| {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red} 0m 0s {color} | {color:red}
The patch has 32 line(s) that end in whitespace. Use git apply --whitespace=fix. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m 6s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 20s {color} |
{color:green} the patch passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 2m 8s {color} | {color:green}
the patch passed with JDK v1.7.0_91 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 0m 49s {color} | {color:green}
hadoop-hdfs-client in the patch passed with JDK v1.8.0_66. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 53m 4s {color} | {color:red}
hadoop-hdfs in the patch failed with JDK v1.8.0_66. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 0m 58s {color} | {color:green}
hadoop-hdfs-client in the patch passed with JDK v1.7.0_91. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 49m 39s {color} | {color:red}
hadoop-hdfs in the patch failed with JDK v1.7.0_91. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 21s {color}
| {color:green} Patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 140m 34s {color} | {color:black}
{color} |
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|| Reason || Tests ||
| JDK v1.8.0_66 Failed junit tests | hadoop.hdfs.server.datanode.TestBlockScanner |
|   | hadoop.tools.TestHdfsConfigFields |
| JDK v1.7.0_91 Failed junit tests | hadoop.hdfs.server.balancer.TestBalancerWithMultipleNameNodes
|
|   | hadoop.tools.TestHdfsConfigFields |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:0ca8df7 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12784821/HDFS-7955-003.patch
|
| JIRA Issue | HDFS-7955 |
| Optional Tests |  asflicense  compile  cc  mvnsite  javac  unit  javadoc  mvninstall  findbugs
 checkstyle  |
| uname | Linux ed6aed7ee865 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 |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 662e17b |
| Default Java | 1.7.0_91 |
| Multi-JDK versions |  /usr/lib/jvm/java-8-oracle:1.8.0_66 /usr/lib/jvm/java-7-openjdk-amd64:1.7.0_91
|
| findbugs | v3.0.0 |
| checkstyle | https://builds.apache.org/job/PreCommit-HDFS-Build/14275/artifact/patchprocess/diff-checkstyle-hadoop-hdfs-project.txt
|
| whitespace | https://builds.apache.org/job/PreCommit-HDFS-Build/14275/artifact/patchprocess/whitespace-eol.txt
|
| unit | https://builds.apache.org/job/PreCommit-HDFS-Build/14275/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_66.txt
|
| unit | https://builds.apache.org/job/PreCommit-HDFS-Build/14275/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.7.0_91.txt
|
| unit test logs |  https://builds.apache.org/job/PreCommit-HDFS-Build/14275/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_66.txt
https://builds.apache.org/job/PreCommit-HDFS-Build/14275/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.7.0_91.txt
|
| JDK v1.7.0_91  Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/14275/testReport/
|
| modules | C:  hadoop-hdfs-project/hadoop-hdfs-client   hadoop-hdfs-project/hadoop-hdfs 
U: hadoop-hdfs-project |
| Max memory used | 76MB |
| Powered by | Apache Yetus 0.2.0-SNAPSHOT   http://yetus.apache.org |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/14275/console |


This message was automatically generated.



> Improve naming of classes, methods, and variables related to block replication and recovery
> -------------------------------------------------------------------------------------------
>
>                 Key: HDFS-7955
>                 URL: https://issues.apache.org/jira/browse/HDFS-7955
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: erasure-coding
>            Reporter: Zhe Zhang
>            Assignee: Rakesh R
>         Attachments: HDFS-7955-001.patch, HDFS-7955-002.patch, HDFS-7955-003.patch
>
>
> Many existing names should be revised to avoid confusion when blocks can be both replicated
and erasure coded. This JIRA aims to solicit opinions on making those names more consistent
and intuitive.
> # In current HDFS _block recovery_ refers to the process of finalizing the last block
of a file, triggered by _lease recovery_. It is different from the intuitive meaning of _recovering
a lost block_. To avoid confusion, I can think of 2 options:
> #* Rename this process as _block finalization_ or _block completion_. I prefer this option
because this is literally not a recovery.
> #* If we want to keep existing terms unchanged we can name all EC recovery and re-replication
logics as _reconstruction_.  
> # As Kai [suggested | https://issues.apache.org/jira/browse/HDFS-7369?focusedCommentId=14361131&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14361131]
under HDFS-7369, several replication-based names should be made more generic:
> #* {{UnderReplicatedBlocks}} and {{neededReplications}}. E.g. we can use {{LowRedundancyBlocks}}/{{AtRiskBlocks}},
and {{neededRecovery}}/{{neededReconstruction}}.
> #* {{PendingReplicationBlocks}}
> #* {{ReplicationMonitor}}
> I'm sure the above list is incomplete; discussions and comments are very welcome.



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