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https://issues.apache.org/jira/browse/HBASE-21001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16606288#comment-16606288
 ] 

Hadoop QA commented on HBASE-21001:
-----------------------------------

| (/) *{color:green}+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:brown} Prechecks {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 1 new or modified test 
files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  5m 
45s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 
49s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 
17s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  4m 
11s{color} | {color:green} branch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 
56s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
32s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  4m 
59s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 
48s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m 
48s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 
17s{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} shadedjars {color} | {color:green}  4m 
13s{color} | {color:green} patch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green} 
10m 42s{color} | {color:green} Patch does not cause any errors with Hadoop 
2.7.4 or 3.0.0. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m 
11s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
31s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}127m 
36s{color} | {color:green} hbase-server in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
23s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}169m 54s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:b002b0b |
| JIRA Issue | HBASE-21001 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12938670/HBASE-21001.master.004.patch
 |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  shadedjars  
hadoopcheck  hbaseanti  checkstyle  compile  |
| uname | Linux 847a1b6e089c 3.13.0-143-generic #192-Ubuntu SMP Tue Feb 27 
10:45:36 UTC 2018 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 / f8b12805bb |
| maven | version: Apache Maven 3.5.4 
(1edded0938998edf8bf061f1ceb3cfdeccf443fe; 2018-06-17T18:33:14Z) |
| Default Java | 1.8.0_181 |
| findbugs | v3.1.0-RC3 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/14331/testReport/ |
| Max. process+thread count | 5283 (vs. ulimit of 10000) |
| modules | C: hbase-server U: hbase-server |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/14331/console |
| Powered by | Apache Yetus 0.7.0   http://yetus.apache.org |


This message was automatically generated.



> ReplicationObserver fails to load in HBase 2.0.0
> ------------------------------------------------
>
>                 Key: HBASE-21001
>                 URL: https://issues.apache.org/jira/browse/HBASE-21001
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0.0-alpha-4, 2.0.0
>            Reporter: Wei-Chiu Chuang
>            Assignee: Guangxu Cheng
>            Priority: Major
>              Labels: replication
>         Attachments: HBASE-21001.master.001.patch, 
> HBASE-21001.master.001.patch, HBASE-21001.master.002.patch, 
> HBASE-21001.master.003.patch, HBASE-21001.master.004.patch
>
>
> ReplicationObserver was added in HBASE-17290 to prevent "Potential loss of 
> data for replication of bulk loaded hfiles".
> I tried to enable bulk loading replication feature 
> (hbase.replication.bulkload.enabled=true and configure 
> hbase.replication.cluster.id) on a HBase 2.0.0 cluster, but the RegionServer 
> started with the following error:
> {quote}
> 2018-08-02 18:20:36,365 INFO 
> org.apache.hadoop.hbase.regionserver.RegionServerCoprocessorHost: System 
> coprocessor loading is enabled
> 2018-08-02 18:20:36,365 INFO 
> org.apache.hadoop.hbase.regionserver.RegionServerCoprocessorHost: Table 
> coprocessor loading is enabled
> 2018-08-02 18:20:36,365 ERROR 
> org.apache.hadoop.hbase.regionserver.RegionServerCoprocessorHost: 
> org.apache.hadoop.hbase.replication.regionserver.ReplicationObserver is not 
> of type
> RegionServerCoprocessor. Check the configuration of 
> hbase.coprocessor.regionserver.classes
> 2018-08-02 18:20:36,366 ERROR 
> org.apache.hadoop.hbase.coprocessor.CoprocessorHost: Cannot load coprocessor 
> ReplicationObserver
> {quote}
> It looks like this was broken by HBASE-17732 to me, but I could be wrong. 



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