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https://issues.apache.org/jira/browse/HDFS-11960?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16044985#comment-16044985
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Hadoop QA commented on HDFS-11960:
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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
19s{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:red}-1{color} | {color:red} test4tests {color} | {color:red} 0m
0s{color} | {color:red} The patch doesn't appear to include any new or modified
tests. Please justify why no new tests are needed for this patch. Also please
list what manual steps were performed to verify this patch. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 14m
56s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
54s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
39s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m
6s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m
56s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
46s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
51s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
51s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
51s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
35s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
56s{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} 1m
50s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
38s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 69m 6s{color}
| {color:red} hadoop-hdfs in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
19s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 97m 6s{color} |
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests |
hadoop.hdfs.TestDFSStripedOutputStreamWithFailureWithRandomECPolicy |
| | hadoop.hdfs.server.datanode.TestDataNodeHotSwapVolumes |
| Timed out junit tests |
org.apache.hadoop.hdfs.server.blockmanagement.TestBlockStatsMXBean |
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|| Subsystem || Report/Notes ||
| Docker | Image:yetus/hadoop:14b5c93 |
| JIRA Issue | HDFS-11960 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12872320/HDFS-11960.patch |
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit findbugs checkstyle |
| uname | Linux dbe1b3b56c89 3.13.0-106-generic #153-Ubuntu SMP Tue Dec 6
15:44:32 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh
|
| git revision | trunk / 99634d1 |
| Default Java | 1.8.0_131 |
| findbugs | v3.1.0-RC1 |
| unit |
https://builds.apache.org/job/PreCommit-HDFS-Build/19854/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/19854/testReport/ |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U:
hadoop-hdfs-project/hadoop-hdfs |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/19854/console |
| Powered by | Apache Yetus 0.5.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> Successfully closed files can stay under-replicated.
> ----------------------------------------------------
>
> Key: HDFS-11960
> URL: https://issues.apache.org/jira/browse/HDFS-11960
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Kihwal Lee
> Assignee: Kihwal Lee
> Priority: Critical
> Attachments: HDFS-11960.patch
>
>
> If a certain set of conditions hold at the time of a file creation, a block
> of the file can stay under-replicated. This is because the block is
> mistakenly taken out of the under-replicated block queue and never gets
> reevaluated.
> Re-evaluation can be triggered if
> - a replica containing node dies.
> - setrep is called
> - NN repl queues are reinitialized (NN failover or restart)
> If none of these happens, the block stays under-replicated.
> Here is how it happens.
> 1) A replica is finalized, but the ACK does not reach the upstream in time.
> IBR is also delayed.
> 2) A close recovery happens, which updates the gen stamp of "healthy"
> replicas.
> 3) The file is closed with the healthy replicas. It is added to the
> replication queue.
> 4) A replication is scheduled, so it is added to the pending replication
> list. The replication target is picked as the failed node in 1).
> 5) The old IBR is finally received for the failed/excluded node. In the
> meantime, the replication fails, because there is already a finalized replica
> (with older gen stamp) on the node.
> 6) The IBR processing removes the block from the pending list, adds it to
> corrupt replicas list, and then issues invalidation. Since the block is in
> neither replication queue nor pending list, it stays under-replicated.
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