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Posted to issues@hbase.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2017/06/19 05:39:02 UTC
[jira] [Commented] (HBASE-18167) OfflineMetaRepair tool may cause
HMaster abort always
[ https://issues.apache.org/jira/browse/HBASE-18167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16053491#comment-16053491 ]
Hadoop QA commented on HBASE-18167:
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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} 12m 45s {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 1 new or modified test files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 8s {color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 4m 13s {color} | {color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 45s {color} | {color:green} branch-1 passed with JDK v1.8.0_131 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 52s {color} | {color:green} branch-1 passed with JDK v1.7.0_131 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 57s {color} | {color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 35s {color} | {color:green} branch-1 passed {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 1m 54s {color} | {color:red} hbase-server in branch-1 has 1 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 44s {color} | {color:green} branch-1 passed with JDK v1.8.0_131 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 53s {color} | {color:green} branch-1 passed with JDK v1.7.0_131 {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 11s {color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 0s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 45s {color} | {color:green} the patch passed with JDK v1.8.0_131 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 45s {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 with JDK v1.7.0_131 {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 54s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 27s {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} 15m 18s {color} | {color:green} The patch does not cause any errors with Hadoop 2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 2.6.1 2.6.2 2.6.3 2.7.1. {color} |
| {color:green}+1{color} | {color:green} hbaseprotoc {color} | {color:green} 0m 26s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 3m 17s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 40s {color} | {color:green} the patch passed with JDK v1.8.0_131 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 54s {color} | {color:green} the patch passed with JDK v1.7.0_131 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 1m 56s {color} | {color:green} hbase-client in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 87m 10s {color} | {color:green} hbase-server in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 32s {color} | {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 139m 50s {color} | {color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=1.12.3 Server=1.12.3 Image:yetus/hbase:395d9a0 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12873428/HBASE-18167-branch-1.patch |
| JIRA Issue | HBASE-18167 |
| Optional Tests | asflicense javac javadoc unit findbugs hadoopcheck hbaseanti checkstyle compile |
| uname | Linux a28466330321 3.13.0-107-generic #154-Ubuntu SMP Tue Dec 20 09:57:27 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/hbase.sh |
| git revision | branch-1 / 316e02e |
| Default Java | 1.7.0_131 |
| Multi-JDK versions | /usr/lib/jvm/java-8-oracle:1.8.0_131 /usr/lib/jvm/java-7-openjdk-amd64:1.7.0_131 |
| findbugs | v3.0.0 |
| findbugs | https://builds.apache.org/job/PreCommit-HBASE-Build/7225/artifact/patchprocess/branch-findbugs-hbase-server-warnings.html |
| Test Results | https://builds.apache.org/job/PreCommit-HBASE-Build/7225/testReport/ |
| modules | C: hbase-client hbase-server U: . |
| Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/7225/console |
| Powered by | Apache Yetus 0.3.0 http://yetus.apache.org |
This message was automatically generated.
> OfflineMetaRepair tool may cause HMaster abort always
> -----------------------------------------------------
>
> Key: HBASE-18167
> URL: https://issues.apache.org/jira/browse/HBASE-18167
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 1.4.0, 1.3.1, 1.3.2
> Reporter: Pankaj Kumar
> Assignee: Pankaj Kumar
> Priority: Critical
> Fix For: 1.4.0
>
> Attachments: HBASE-18167-branch-1.patch
>
>
> In the production environment, we met a weird scenario where some Meta table HFile blocks were missing due to some reason.
> To recover the environment we tried to rebuild the meta using OfflineMetaRepair tool and restart the cluster, but HMaster couldn't finish it's initialization. It always timed out as namespace table region was never assigned.
> Steps to reproduce
> ==================
> 1. Assign meta table region to HMaster (it can be on any RS, just to reproduce the scenario)
> {noformat}
> <property>
> <name>hbase.balancer.tablesOnMaster</name>
> <value>hbase:meta</value>
> </property>
> {noformat}
> 2. Start HMaster and RegionServer
> 2. Create two namespace, say "ns1" & "ns2"
> 3. Create two tables "ns1:t1' & "ns2:t1'
> 4. flush 'hbase:meta"
> 5. Stop HMaster (graceful shutdown)
> 6. Kill -9 RegionServer (Abnormal shutdown)
> 7. Run OfflineMetaRepair as follows,
> {noformat}
> hbase org.apache.hadoop.hbase.util.hbck.OfflineMetaRepair -fix
> {noformat}
> 8. Restart HMaster and RegionServer
> 9. HMaster will never be able to finish its initialization and abort always with below message,
> {code}
> 2017-06-06 15:11:07,582 FATAL [Hostname:16000.activeMasterManager] master.HMaster: Unhandled exception. Starting shutdown.
> java.io.IOException: Timedout 120000ms waiting for namespace table to be assigned
> at org.apache.hadoop.hbase.master.TableNamespaceManager.start(TableNamespaceManager.java:98)
> at org.apache.hadoop.hbase.master.HMaster.initNamespace(HMaster.java:1054)
> at org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:848)
> at org.apache.hadoop.hbase.master.HMaster.access$600(HMaster.java:199)
> at org.apache.hadoop.hbase.master.HMaster$2.run(HMaster.java:1871)
> at java.lang.Thread.run(Thread.java:745)
> {code}
> Root cause
> ==========
> 1. During HM start up AM assumes that it's a failover scenario based on the existing old WAL files, so SSH/SCP will split WAL files and assign the holding regions.
> 2. During SSH/SCP it retrieves the server holding regions from meta/AM's in-memory-state, but meta only had "regioninfo" entry (as already rebuild by OfflineMetaRepair). So empty region will be returned and it wont trigger any assignment.
> 3. HMaster which is waiting for namespace table to be assigned will timeout and abort always.
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