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https://issues.apache.org/jira/browse/HBASE-22777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16900607#comment-16900607
 ] 

HBase QA commented on HBASE-22777:
----------------------------------

| (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 
59s{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 6 new or modified test 
files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
39s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  6m 
22s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  2m 
42s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  2m 
31s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  4m 
45s{color} | {color:green} branch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  8m 
43s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
43s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
17s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  5m 
12s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  2m 
39s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green}  2m 
39s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  2m 
39s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 
30s{color} | {color:red} hbase-client: The patch generated 12 new + 71 
unchanged - 52 fixed = 83 total (was 123) {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  1m 
13s{color} | {color:red} hbase-server: The patch generated 24 new + 426 
unchanged - 5 fixed = 450 total (was 431) {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 
14s{color} | {color:red} hbase-rest: The patch generated 1 new + 3 unchanged - 
0 fixed = 4 total (was 3) {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 
47s{color} | {color:green} patch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green} 
17m 28s{color} | {color:green} Patch does not cause any errors with Hadoop 
2.8.5 2.9.2 or 3.1.2. {color} |
| {color:green}+1{color} | {color:green} hbaseprotoc {color} | {color:green}  
2m 11s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  1m 
21s{color} | {color:red} hbase-client generated 2 new + 0 unchanged - 0 fixed = 
2 total (was 0) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
34s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 
32s{color} | {color:green} hbase-protocol-shaded in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  6m 
11s{color} | {color:green} hbase-common in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  3m 
43s{color} | {color:green} hbase-client in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red}255m 29s{color} 
| {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  9m 
53s{color} | {color:green} hbase-rest in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  1m 
44s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}360m 18s{color} | 
{color:black} {color} |
\\
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|| Reason || Tests ||
| FindBugs | module:hbase-client |
|  |  Call to 
org.apache.hadoop.hbase.TableName.equals(org.apache.hadoop.hbase.client.RegionInfo)
 in org.apache.hadoop.hbase.client.RegionInfo.areAdjacent(RegionInfo, 
RegionInfo)  At RegionInfo.java:RegionInfo)  At RegionInfo.java:[line 427] |
|  |  Nullcheck of regionA at line 430 of value previously dereferenced in 
org.apache.hadoop.hbase.client.RegionInfo.areAdjacent(RegionInfo, RegionInfo)  
At RegionInfo.java:430 of value previously dereferenced in 
org.apache.hadoop.hbase.client.RegionInfo.areAdjacent(RegionInfo, RegionInfo)  
At RegionInfo.java:[line 427] |
| Failed junit tests | hadoop.hbase.master.procedure.TestIgnoreUnknownFamily |
|   | hadoop.hbase.regionserver.TestRegionMergeTransactionOnCluster |
|   | hadoop.hbase.master.TestMergeTableRegionsWhileRSCrash |
|   | hadoop.hbase.client.TestCloneSnapshotFromClientNormal |
|   | hadoop.hbase.client.TestAsyncRegionAdminApi2 |
|   | hadoop.hbase.replication.TestSerialReplication |
|   | hadoop.hbase.client.TestTableFavoredNodes |
|   | hadoop.hbase.master.assignment.TestMasterAbortWhileMergingTable |
|   | hadoop.hbase.TestSequenceIdMonotonicallyIncreasing |
|   | hadoop.hbase.client.TestAsyncTableAdminApi |
|   | hadoop.hbase.master.assignment.TestModifyTableWhileMerging |
|   | hadoop.hbase.client.TestAdmin1 |
|   | hadoop.hbase.TestSplitMerge |
\\
\\
|| Subsystem || Report/Notes ||
| Docker | Client=19.03.1 Server=19.03.1 base: 
https://builds.apache.org/job/PreCommit-HBASE-Build/719/artifact/patchprocess/Dockerfile
 |
| JIRA Issue | HBASE-22777 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12976761/HBASE-22777.master.002.patch
 |
| Optional Tests |  dupname  asflicense  javac  javadoc  unit  findbugs  
shadedjars  hadoopcheck  hbaseanti  checkstyle  compile  cc  hbaseprotoc  |
| uname | Linux f8439c9f3dfb 4.4.0-137-generic #163-Ubuntu SMP Mon Sep 24 
13:14:43 UTC 2018 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/hbase-personality.sh |
| git revision | master / ad3674f337 |
| maven | version: Apache Maven 3.5.4 
(1edded0938998edf8bf061f1ceb3cfdeccf443fe; 2018-06-17T18:33:14Z) |
| Default Java | 1.8.0_181 |
| findbugs | v3.1.11 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HBASE-Build/719/artifact/patchprocess/diff-checkstyle-hbase-client.txt
 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HBASE-Build/719/artifact/patchprocess/diff-checkstyle-hbase-server.txt
 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HBASE-Build/719/artifact/patchprocess/diff-checkstyle-hbase-rest.txt
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HBASE-Build/719/artifact/patchprocess/new-findbugs-hbase-client.html
 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/719/artifact/patchprocess/patch-unit-hbase-server.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/719/testReport/ |
| Max. process+thread count | 5160 (vs. ulimit of 10000) |
| modules | C: hbase-protocol-shaded hbase-common hbase-client hbase-server 
hbase-rest U: . |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/719/console |
| Powered by | Apache Yetus 0.9.0 http://yetus.apache.org |


This message was automatically generated.



> Add a multi-region merge (for fixing overlaps, etc.)
> ----------------------------------------------------
>
>                 Key: HBASE-22777
>                 URL: https://issues.apache.org/jira/browse/HBASE-22777
>             Project: HBase
>          Issue Type: Sub-task
>          Components: hbck2, proc-v2
>            Reporter: stack
>            Assignee: stack
>            Priority: Major
>         Attachments: HBASE-22777.master.001.patch, 
> HBASE-22777.master.002.patch
>
>
> MergeTableRegionProcedure does two regions at a time only. We have hardcoded 
> notion that merge has an 'A' and 'B' parent.
> This issue is about making it so we merge N regions all in the one go. We 
> need this facility generally; will simplify operator's life being able to 
> merge up in one go rather than in steps of two. In particular, would make 
> fixing overlaps easier if could just merge all regions in the overlapping 
> area.



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