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https://issues.apache.org/jira/browse/HBASE-17931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16053613#comment-16053613
 ] 

Hadoop QA commented on HBASE-17931:
-----------------------------------

| (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 12s 
{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 3 new or modified test 
files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 20s 
{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 
45s {color} | {color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 28s 
{color} | {color:green} branch-1 passed with JDK v1.8.0_131 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 35s 
{color} | {color:green} branch-1 passed with JDK v1.7.0_131 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 
24s {color} | {color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
50s {color} | {color:green} branch-1 passed {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 1m 46s 
{color} | {color:red} hbase-server in branch-1 has 1 extant Findbugs warnings. 
{color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 1m 47s 
{color} | {color:red} hbase-server in branch-1 has 1 extant Findbugs warnings. 
{color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 16s 
{color} | {color:green} branch-1 passed with JDK v1.8.0_131 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 39s 
{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:red}-1{color} | {color:red} mvninstall {color} | {color:red} 0m 22s 
{color} | {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 43s 
{color} | {color:green} the patch passed with JDK v1.8.0_131 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 13s 
{color} | {color:green} hbase-common-jdk1.8.0_131 with JDK v1.8.0_131 generated 
0 new + 18 unchanged - 18 fixed = 18 total (was 36) {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 30s 
{color} | {color:green} hbase-server-jdk1.8.0_131 with JDK v1.8.0_131 generated 
0 new + 5 unchanged - 5 fixed = 5 total (was 10) {color} |
| {color:red}-1{color} | {color:red} compile {color} | {color:red} 0m 23s 
{color} | {color:red} hbase-server in the patch failed with JDK v1.7.0_131. 
{color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 16s 
{color} | {color:green} hbase-common-jdk1.7.0_131 with JDK v1.7.0_131 generated 
0 new + 18 unchanged - 18 fixed = 18 total (was 36) {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red} 0m 23s {color} 
| {color:red} hbase-server in the patch failed with JDK v1.7.0_131. {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 
41s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
28s {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:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 0m 48s 
{color} | {color:red} The patch causes 29 errors with Hadoop v2.4.0. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 1m 33s 
{color} | {color:red} The patch causes 29 errors with Hadoop v2.4.1. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 2m 18s 
{color} | {color:red} The patch causes 29 errors with Hadoop v2.5.0. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 3m 6s 
{color} | {color:red} The patch causes 29 errors with Hadoop v2.5.1. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 3m 53s 
{color} | {color:red} The patch causes 29 errors with Hadoop v2.5.2. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 4m 42s 
{color} | {color:red} The patch causes 29 errors with Hadoop v2.6.1. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 5m 28s 
{color} | {color:red} The patch causes 29 errors with Hadoop v2.6.2. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 6m 14s 
{color} | {color:red} The patch causes 29 errors with Hadoop v2.6.3. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 7m 0s 
{color} | {color:red} The patch causes 29 errors with Hadoop v2.7.1. {color} |
| {color:red}-1{color} | {color:red} hbaseprotoc {color} | {color:red} 0m 20s 
{color} | {color:red} hbase-server in the patch failed. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 0m 22s 
{color} | {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 13s 
{color} | {color:green} hbase-common-jdk1.8.0_131 with JDK v1.8.0_131 generated 
0 new + 1 unchanged - 1 fixed = 1 total (was 2) {color} |
| {color:red}-1{color} | {color:red} javadoc {color} | {color:red} 0m 24s 
{color} | {color:red} hbase-server-jdk1.8.0_131 with JDK v1.8.0_131 generated 1 
new + 3 unchanged - 3 fixed = 4 total (was 6) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 17s 
{color} | {color:green} hbase-common-jdk1.7.0_131 with JDK v1.7.0_131 generated 
0 new + 4 unchanged - 4 fixed = 4 total (was 8) {color} |
| {color:red}-1{color} | {color:red} javadoc {color} | {color:red} 0m 33s 
{color} | {color:red} hbase-server-jdk1.7.0_131 with JDK v1.7.0_131 generated 2 
new + 3 unchanged - 3 fixed = 5 total (was 6) {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 1m 55s {color} 
| {color:red} hbase-common in the patch failed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 0m 22s {color} 
| {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 
17s {color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 32m 38s {color} 
| {color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.hbase.TestChoreService |
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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/12873445/HBASE-17931.branch-1.v01.patch
 |
| JIRA Issue | HBASE-17931 |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  hadoopcheck  
hbaseanti  checkstyle  compile  |
| uname | Linux 01691439323e 4.4.0-43-generic #63-Ubuntu SMP Wed Oct 12 
13:48:03 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/7227/artifact/patchprocess/branch-findbugs-hbase-server-warnings.html
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HBASE-Build/7227/artifact/patchprocess/branch-findbugs-hbase-server-warnings.html
 |
| mvninstall | 
https://builds.apache.org/job/PreCommit-HBASE-Build/7227/artifact/patchprocess/patch-mvninstall-hbase-server.txt
 |
| compile | 
https://builds.apache.org/job/PreCommit-HBASE-Build/7227/artifact/patchprocess/patch-compile-hbase-server-jdk1.7.0_131.txt
 |
| javac | 
https://builds.apache.org/job/PreCommit-HBASE-Build/7227/artifact/patchprocess/patch-compile-hbase-server-jdk1.7.0_131.txt
 |
| hbaseprotoc | 
https://builds.apache.org/job/PreCommit-HBASE-Build/7227/artifact/patchprocess/patch-hbaseprotoc-hbase-server.txt
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HBASE-Build/7227/artifact/patchprocess/patch-findbugs-hbase-server.txt
 |
| javadoc | 
https://builds.apache.org/job/PreCommit-HBASE-Build/7227/artifact/patchprocess/diff-javadoc-javadoc-hbase-server-jdk1.8.0_131.txt
 |
| javadoc | 
https://builds.apache.org/job/PreCommit-HBASE-Build/7227/artifact/patchprocess/diff-javadoc-javadoc-hbase-server-jdk1.7.0_131.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/7227/artifact/patchprocess/patch-unit-hbase-common.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/7227/artifact/patchprocess/patch-unit-hbase-server.txt
 |
| unit test logs |  
https://builds.apache.org/job/PreCommit-HBASE-Build/7227/artifact/patchprocess/patch-unit-hbase-common.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/7227/testReport/ |
| modules | C: hbase-common hbase-server U: . |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/7227/console |
| Powered by | Apache Yetus 0.3.0   http://yetus.apache.org |


This message was automatically generated.



> Assign system tables to servers with highest version
> ----------------------------------------------------
>
>                 Key: HBASE-17931
>                 URL: https://issues.apache.org/jira/browse/HBASE-17931
>             Project: HBase
>          Issue Type: Bug
>          Components: scan
>            Reporter: Phil Yang
>            Assignee: Phil Yang
>            Priority: Blocker
>             Fix For: 2.0.0, 1.4.0
>
>         Attachments: HBASE-17931.branch-1.v01.patch, HBASE-17931.v01.patch, 
> HBASE-17931.v02.patch, HBASE-17931.v03.patch
>
>
> In branch-1 and master we have some improvement and new features on scanning 
> which is not compatible.
> A client of old version to a server of new version is compatible (must be a 
> bug if not, maybe need some test?). 
> A client of new version may not be able to read from a server of old version 
> correctly (because of scan limit, moreResults flag, etc), which is ok for 
> major/minor upgrade and we can tell users to upgrade server before upgrading 
> client. But RS also use scan to read meta. If meta table is in RS of old 
> version, all RSs of new version may have trouble while scanning meta table.
> So we should make sure meta table always in servers of new version. Force 
> meta table in Master and upgrade Master first, or assign meta table in region 
> servers with latest version?



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