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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18137) Replication gets stuck for empty WALs
Date Sat, 10 Jun 2017 03:47:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18137?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16045362#comment-16045362
] 

Hadoop QA commented on HBASE-18137:
-----------------------------------

| (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 25s {color} | {color:blue}
Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} hbaseanti {color} | {color:green} 0m 0s {color} |
{color:green} Patch does not have any anti-patterns. {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} 6m 53s {color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 28s {color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 31s {color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 27s {color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m 30s {color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 54s {color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 31s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 23s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 23s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 26s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 25s {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} hadoopcheck {color} | {color:green} 57m 3s {color}
| {color:green} Patch does not cause any errors with Hadoop 2.6.1 2.6.2 2.6.3 2.6.4 2.6.5
2.7.1 2.7.2 2.7.3 or 3.0.0-alpha2. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m 27s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 52s {color} |
{color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 33m 48s {color} | {color:red}
hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 16s {color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 117m 54s {color} | {color:black}
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|| Reason || Tests ||
| Failed junit tests | hadoop.hbase.master.locking.TestLockProcedure |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.03.0-ce Server=17.03.0-ce Image:yetus/hbase:757bf37 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12872397/HBASE-18137.master.v1.patch
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| JIRA Issue | HBASE-18137 |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  hadoopcheck  hbaseanti  checkstyle
 compile  |
| uname | Linux 0894ece11988 4.8.3-std-1 #1 SMP Fri Oct 21 11:15:43 UTC 2016 x86_64 x86_64
x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/component/dev-support/hbase-personality.sh
|
| git revision | master / e5ea457 |
| Default Java | 1.8.0_131 |
| findbugs | v3.0.0 |
| unit | https://builds.apache.org/job/PreCommit-HBASE-Build/7165/artifact/patchprocess/patch-unit-hbase-server.txt
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| unit test logs |  https://builds.apache.org/job/PreCommit-HBASE-Build/7165/artifact/patchprocess/patch-unit-hbase-server.txt
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|  Test Results | https://builds.apache.org/job/PreCommit-HBASE-Build/7165/testReport/ |
| modules | C: hbase-server U: hbase-server |
| Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/7165/console |
| Powered by | Apache Yetus 0.3.0   http://yetus.apache.org |


This message was automatically generated.



> Replication gets stuck for empty WALs
> -------------------------------------
>
>                 Key: HBASE-18137
>                 URL: https://issues.apache.org/jira/browse/HBASE-18137
>             Project: HBase
>          Issue Type: Bug
>          Components: Replication
>    Affects Versions: 1.3.1
>            Reporter: Ashu Pachauri
>            Assignee: Vincent Poon
>            Priority: Critical
>             Fix For: 2.0.0, 1.4.0, 1.3.2, 1.1.11, 1.2.7
>
>         Attachments: HBASE-18137.branch-1.3.v1.patch, HBASE-18137.branch-1.3.v2.patch,
HBASE-18137.branch-1.3.v3.patch, HBASE-18137.branch-1.v1.patch, HBASE-18137.branch-1.v2.patch,
HBASE-18137.master.v1.patch
>
>
> Replication assumes that only the last WAL of a recovered queue can be empty. But, intermittent
DFS issues may cause empty WALs being created (without the PWAL magic), and a roll of WAL
to happen without a regionserver crash. This will cause recovered queues to have empty WALs
in the middle. This cause replication to get stuck:
> {code}
> TRACE regionserver.ReplicationSource: Opening log <wal_file>
> WARN regionserver.ReplicationSource: <peer_cluster_id>-<recovered_queue>
Got: 
> java.io.EOFException
> 	at java.io.DataInputStream.readFully(DataInputStream.java:197)
> 	at java.io.DataInputStream.readFully(DataInputStream.java:169)
> 	at org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1915)
> 	at org.apache.hadoop.io.SequenceFile$Reader.initialize(SequenceFile.java:1880)
> 	at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1829)
> 	at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1843)
> 	at org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogReader$WALReader.<init>(SequenceFileLogReader.java:70)
> 	at org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogReader.reset(SequenceFileLogReader.java:168)
> 	at org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogReader.initReader(SequenceFileLogReader.java:177)
> 	at org.apache.hadoop.hbase.regionserver.wal.ReaderBase.init(ReaderBase.java:66)
> 	at org.apache.hadoop.hbase.wal.WALFactory.createReader(WALFactory.java:312)
> 	at org.apache.hadoop.hbase.wal.WALFactory.createReader(WALFactory.java:276)
> 	at org.apache.hadoop.hbase.wal.WALFactory.createReader(WALFactory.java:264)
> 	at org.apache.hadoop.hbase.wal.WALFactory.createReader(WALFactory.java:423)
> 	at org.apache.hadoop.hbase.replication.regionserver.ReplicationWALReaderManager.openReader(ReplicationWALReaderManager.java:70)
> 	at org.apache.hadoop.hbase.replication.regionserver.ReplicationSource$ReplicationSourceWorkerThread.openReader(ReplicationSource.java:830)
> 	at org.apache.hadoop.hbase.replication.regionserver.ReplicationSource$ReplicationSourceWorkerThread.run(ReplicationSource.java:572)
> {code}
> The WAL in question was completely empty but there were other WALs in the recovered queue
which were newer and non-empty.



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