[ 
https://issues.apache.org/jira/browse/HBASE-19969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16390367#comment-16390367
 ] 

Hadoop QA commented on HBASE-19969:
-----------------------------------

| (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 
17s{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 2 new or modified test 
files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  3m 
53s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
18s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
11s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  4m 
19s{color} | {color:green} branch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  0m 
30s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
11s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  3m 
56s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
18s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
18s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 
12s{color} | {color:red} hbase-backup: The patch generated 13 new + 0 unchanged 
- 0 fixed = 13 total (was 0) {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red}  0m  
0s{color} | {color:red} The patch has 16 line(s) that end in whitespace. Use 
git apply --whitespace=fix <<patch_file>>. Refer 
https://git-scm.com/docs/git-apply {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  4m 
16s{color} | {color:green} patch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 15m 
17s{color} | {color:red} The patch causes 15 errors with Hadoop v3.0.0. {color} 
|
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  0m 
45s{color} | {color:red} hbase-backup generated 1 new + 0 unchanged - 0 fixed = 
1 total (was 0) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
13s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 19m 
15s{color} | {color:green} hbase-backup in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
10s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 49m 54s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:hbase-backup |
|  |  Dead store to pp in 
org.apache.hadoop.hbase.backup.mapreduce.MapReduceBackupMergeJob.convertToDest(Path,
 Path)  At 
MapReduceBackupMergeJob.java:org.apache.hadoop.hbase.backup.mapreduce.MapReduceBackupMergeJob.convertToDest(Path,
 Path)  At MapReduceBackupMergeJob.java:[line 243] |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:eee3b01 |
| JIRA Issue | HBASE-19969 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12913457/HBASE-19969-v1.patch |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  shadedjars  
hadoopcheck  hbaseanti  checkstyle  compile  |
| uname | Linux e9d40e284f5e 4.4.0-116-generic #140-Ubuntu SMP Mon Feb 12 
21:23:04 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 / 37d91cdfbb |
| maven | version: Apache Maven 3.5.2 
(138edd61fd100ec658bfa2d307c43b76940a5d7d; 2017-10-18T07:58:13Z) |
| Default Java | 1.8.0_151 |
| findbugs | v3.1.0-RC3 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HBASE-Build/11851/artifact/patchprocess/diff-checkstyle-hbase-backup.txt
 |
| whitespace | 
https://builds.apache.org/job/PreCommit-HBASE-Build/11851/artifact/patchprocess/whitespace-eol.txt
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HBASE-Build/11851/artifact/patchprocess/new-findbugs-hbase-backup.html
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/11851/testReport/ |
| Max. process+thread count | 4424 (vs. ulimit of 10000) |
| modules | C: hbase-backup U: hbase-backup |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/11851/console |
| Powered by | Apache Yetus 0.7.0   http://yetus.apache.org |


This message was automatically generated.



> Improve FT in merge operation
> -----------------------------
>
>                 Key: HBASE-19969
>                 URL: https://issues.apache.org/jira/browse/HBASE-19969
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Vladimir Rodionov
>            Assignee: Vladimir Rodionov
>            Priority: Major
>         Attachments: HBASE-19969-v1.patch
>
>
> Some file system operations are not fault tolerant during merge. We delete 
> backup data in a backup file system, then copy new data over to backup 
> destination. Deletes can be partial, copy can fail as well



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