[
https://issues.apache.org/jira/browse/HDFS-9046?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14768907#comment-14768907
]
Hadoop QA commented on HDFS-9046:
---------------------------------
\\
\\
| (x) *{color:red}-1 overall{color}* |
\\
\\
|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch | 17m 54s | 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 1 new or modified test files. |
| {color:green}+1{color} | javac | 8m 4s | There were no new javac warning
messages. |
| {color:green}+1{color} | javadoc | 10m 2s | There were no new javadoc
warning messages. |
| {color:green}+1{color} | release audit | 0m 26s | The applied patch does
not increase the total number of release audit warnings. |
| {color:red}-1{color} | checkstyle | 1m 27s | The applied patch generated 1
new checkstyle issues (total was 26, now 27). |
| {color:red}-1{color} | whitespace | 0m 0s | The patch has 1 line(s) that
end in whitespace. Use git apply --whitespace=fix. |
| {color:green}+1{color} | install | 1m 35s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse | 0m 36s | The patch built with
eclipse:eclipse. |
| {color:green}+1{color} | findbugs | 2m 28s | The patch does not introduce
any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | native | 3m 6s | Pre-build of native portion |
| {color:green}+1{color} | hdfs tests | 162m 43s | Tests passed in hadoop-hdfs.
|
| | | 208m 26s | |
\\
\\
|| Subsystem || Report/Notes ||
| Patch URL |
http://issues.apache.org/jira/secure/attachment/12756197/HDFS-9046_2.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / bf2f2b4 |
| checkstyle |
https://builds.apache.org/job/PreCommit-HDFS-Build/12476/artifact/patchprocess/diffcheckstylehadoop-hdfs.txt
|
| whitespace |
https://builds.apache.org/job/PreCommit-HDFS-Build/12476/artifact/patchprocess/whitespace.txt
|
| hadoop-hdfs test log |
https://builds.apache.org/job/PreCommit-HDFS-Build/12476/artifact/patchprocess/testrun_hadoop-hdfs.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/12476/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf902.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/12476/console |
This message was automatically generated.
> Any Error during BPOfferService run can leads to Missing DN.
> ------------------------------------------------------------
>
> Key: HDFS-9046
> URL: https://issues.apache.org/jira/browse/HDFS-9046
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: nijel
> Assignee: nijel
> Attachments: HDFS-9046_1.patch, HDFS-9046_2.patch
>
>
> The cluster is ins HA mode and each DN having only one block pool.
> The issue is once after switch one DN is missing from the current active NN.
> Upon analysis I found that there is one exception in BPOfferService.run()
> {noformat}
> 2015-08-21 09:02:11,190 | WARN | DataNode:
> [[[DISK]file:/srv/BigData/hadoop/data5/dn/
> [DISK]file:/srv/BigData/hadoop/data4/dn/]] heartbeating to
> 160-149-0-114/160.149.0.114:25000 | Unexpected exception in block pool Block
> pool BP-284203724-160.149.0.114-1438774011693 (Datanode Uuid
> 15ce1dd7-227f-4fd2-9682-091aa6bc2b89) service to
> 160-149-0-114/160.149.0.114:25000 | BPServiceActor.java:830
> java.lang.OutOfMemoryError: unable to create new native thread
> at java.lang.Thread.start0(Native Method)
> at java.lang.Thread.start(Thread.java:714)
> at
> java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:950)
> at
> java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1357)
> at
> org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetAsyncDiskService.execute(FsDatasetAsyncDiskService.java:172)
> at
> org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetAsyncDiskService.deleteAsync(FsDatasetAsyncDiskService.java:221)
> at
> org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.invalidate(FsDatasetImpl.java:1887)
> at
> org.apache.hadoop.hdfs.server.datanode.BPOfferService.processCommandFromActive(BPOfferService.java:669)
> at
> org.apache.hadoop.hdfs.server.datanode.BPOfferService.processCommandFromActor(BPOfferService.java:616)
> at
> org.apache.hadoop.hdfs.server.datanode.BPServiceActor.processCommand(BPServiceActor.java:856)
> at
> org.apache.hadoop.hdfs.server.datanode.BPServiceActor.offerService(BPServiceActor.java:671)
> at
> org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:822)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
> After this particular BPOfferService is down during the run time.
> And this particular NN will not have the details of this DN
> Similar issues are discussed in the following JIRAs
> https://issues.apache.org/jira/browse/HDFS-2882
> https://issues.apache.org/jira/browse/HDFS-7714
> Can we retry in this case also with a larger interval instead of shutting
> down this BPOfferService ?
> I think since this exceptions can occur randomly in DN it is not good to keep
> the DN running where some NN does not have the info !
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
