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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8578) On upgrade, Datanode should process all storage/data dirs in parallel
Date Wed, 29 Jul 2015 11:28:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14645898#comment-14645898
] 

Hadoop QA commented on HDFS-8578:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  17m 13s | 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 3 new
or modified test files. |
| {color:green}+1{color} | javac |   7m 35s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |   9m 37s | There were no new javadoc warning messages.
|
| {color:green}+1{color} | release audit |   0m 23s | The applied patch does not increase
the total number of release audit warnings. |
| {color:red}-1{color} | checkstyle |   1m 20s | The applied patch generated  1 new checkstyle
issues (total was 595, now 590). |
| {color:green}+1{color} | whitespace |   0m  1s | The patch has no lines that end in whitespace.
|
| {color:green}+1{color} | install |   1m 20s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with eclipse:eclipse.
|
| {color:green}+1{color} | findbugs |   2m 29s | The patch does not introduce any new Findbugs
(version 3.0.0) warnings. |
| {color:green}+1{color} | native |   3m  1s | Pre-build of native portion |
| {color:red}-1{color} | hdfs tests | 161m 15s | Tests failed in hadoop-hdfs. |
| | | 204m 51s | |
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|| Reason || Tests ||
| Failed unit tests | hadoop.hdfs.server.datanode.TestDataNodeHotSwapVolumes |
|   | hadoop.hdfs.server.datanode.TestDataNodeRollingUpgrade |
|   | hadoop.hdfs.server.blockmanagement.TestOverReplicatedBlocks |
|   | hadoop.hdfs.server.balancer.TestBalancer |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12747740/HDFS-8578-08.patch
|
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 2a1d656 |
| checkstyle |  https://builds.apache.org/job/PreCommit-HDFS-Build/11865/artifact/patchprocess/diffcheckstylehadoop-hdfs.txt
|
| hadoop-hdfs test log | https://builds.apache.org/job/PreCommit-HDFS-Build/11865/artifact/patchprocess/testrun_hadoop-hdfs.txt
|
| Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/11865/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf906.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/11865/console |


This message was automatically generated.

> On upgrade, Datanode should process all storage/data dirs in parallel
> ---------------------------------------------------------------------
>
>                 Key: HDFS-8578
>                 URL: https://issues.apache.org/jira/browse/HDFS-8578
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>            Reporter: Raju Bairishetti
>            Assignee: Vinayakumar B
>            Priority: Critical
>         Attachments: HDFS-8578-01.patch, HDFS-8578-02.patch, HDFS-8578-03.patch, HDFS-8578-04.patch,
HDFS-8578-05.patch, HDFS-8578-06.patch, HDFS-8578-07.patch, HDFS-8578-08.patch, HDFS-8578-branch-2.6.0.patch
>
>
> Right now, during upgrades datanode is processing all the storage dirs sequentially.
Assume it takes ~20 mins to process a single storage dir then  datanode which has ~10 disks
will take around 3hours to come up.
> *BlockPoolSliceStorage.java*
> {code}
>    for (int idx = 0; idx < getNumStorageDirs(); idx++) {
>       doTransition(datanode, getStorageDir(idx), nsInfo, startOpt);
>       assert getCTime() == nsInfo.getCTime() 
>           : "Data-node and name-node CTimes must be the same.";
>     }
> {code}
> It would save lots of time during major upgrades if datanode process all storagedirs/disks
parallelly.
> Can we make datanode to process all storage dirs parallelly?



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