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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18066) Get with closest_row_before on "hbase:meta" can return empty Cell during region merge/split
Date Sat, 27 May 2017 18:13:05 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18066?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16027520#comment-16027520
] 

Hadoop QA commented on HBASE-18066:
-----------------------------------

| (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 30s {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 2 new or modified test files. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 3m 26s {color}
| {color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 10s {color} |
{color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 32s {color}
| {color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 23s {color}
| {color:green} branch-1 passed {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 3m 45s {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 52s {color} |
{color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 18s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 10s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 10s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 35s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 24s {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} 29m 38s {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 22s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m 10s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 53s {color} |
{color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 141m 47s {color} | {color:red}
hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 22s {color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 193m 59s {color} | {color:black}
{color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.hbase.client.TestReplicasClient |
|   | hadoop.hbase.client.TestMvccConsistentScanner |
|   | hadoop.hbase.master.balancer.TestStochasticLoadBalancer2 |
|   | hadoop.hbase.client.TestFromClientSideWithCoprocessor |
|   | hadoop.hbase.regionserver.TestHRegion |
|   | hadoop.hbase.client.TestFromClientSide |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.03.0-ce Server=17.03.0-ce Image:yetus/hbase:58c504e |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12870213/HBASE-18066.branch-1.v3.patch
|
| JIRA Issue | HBASE-18066 |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  hadoopcheck  hbaseanti  checkstyle
 compile  |
| uname | Linux dc7e7bb1b5f6 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 | /testptch/patchprocess/precommit/personality/hbase.sh |
| git revision | branch-1 / 1a37f3b |
| Default Java | 1.8.0_131 |
| findbugs | v3.0.0 |
| findbugs | https://builds.apache.org/job/PreCommit-HBASE-Build/6982/artifact/patchprocess/branch-findbugs-hbase-server-warnings.html
|
| unit | https://builds.apache.org/job/PreCommit-HBASE-Build/6982/artifact/patchprocess/patch-unit-hbase-server.txt
|
| unit test logs |  https://builds.apache.org/job/PreCommit-HBASE-Build/6982/artifact/patchprocess/patch-unit-hbase-server.txt
|
|  Test Results | https://builds.apache.org/job/PreCommit-HBASE-Build/6982/testReport/ |
| modules | C: hbase-server U: hbase-server |
| Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/6982/console |
| Powered by | Apache Yetus 0.3.0   http://yetus.apache.org |


This message was automatically generated.



> Get with closest_row_before on "hbase:meta" can return empty Cell during region merge/split
> -------------------------------------------------------------------------------------------
>
>                 Key: HBASE-18066
>                 URL: https://issues.apache.org/jira/browse/HBASE-18066
>             Project: HBase
>          Issue Type: Bug
>          Components: hbase, regionserver
>    Affects Versions: 1.3.1
>         Environment: Linux (16.04.2), MacOS 10.11.6.
> Standalone and distributed HBase setup.
>            Reporter: Andrey Elenskiy
>            Assignee: Zheng Hu
>         Attachments: HBASE-18066.branch-1.1.v1.patch, HBASE-18066.branch-1.1.v1.patch,
HBASE-18066.branch-1.1.v1.patch, HBASE-18066.branch-1.3.v1.patch, HBASE-18066.branch-1.3.v1.patch,
HBASE-18066.branch-1.v1.patch, HBASE-18066.branch-1.v2.patch, HBASE-18066.branch-1.v3.patch,
HBASE-18066.branch-1.v3.patch, TestGetWithClosestRowBeforeWhenSplit.java
>
>
> During region split/merge there's a brief period of time where doing a "Get" with "closest_row_before=true"
on "hbase:meta" may return empty "GetResponse.result.cell" field even though parent, splitA
and splitB regions are all in "hbase:meta". Both gohbase (https://github.com/tsuna/gohbase)
and AsyncHBase (https://github.com/OpenTSDB/asynchbase) interprets this as "TableDoesNotExist",
which is returned to the client.
> Here's a gist that reproduces this problem: https://gist.github.com/Timoha/c7a236b768be9220e85e53e1ca53bf96.
Note that you have to use older HTable client (I used 1.2.4) as current versions ignore `Get.setClosestRowBefore(bool)`
option.



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