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https://issues.apache.org/jira/browse/HBASE-16931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15601619#comment-15601619
 ] 

Hadoop QA commented on HBASE-16931:
-----------------------------------

| (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 13s 
{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 1 new or modified test 
files. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 3m 
21s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 36s 
{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 
46s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
14s {color} | {color:green} master passed {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 1m 44s 
{color} | {color:red} hbase-server in master has 1 extant Findbugs warnings. 
{color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 26s 
{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 
46s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 36s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 36s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 
45s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
14s {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} 
27m 25s {color} | {color:green} Patch does not cause any errors with Hadoop 
2.6.1 2.6.2 2.6.3 2.6.4 2.6.5 2.7.1 2.7.2 2.7.3 or 3.0.0-alpha1. {color} |
| {color:green}+1{color} | {color:green} hbaseprotoc {color} | {color:green} 0m 
12s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m 
49s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 25s 
{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 79m 19s {color} 
| {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 
15s {color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 119m 26s {color} 
| {color:black} {color} |
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|| Reason || Tests ||
| Timed out junit tests | 
org.apache.hadoop.hbase.master.procedure.TestTableDescriptorModificationFromClient
 |
|   | org.apache.hadoop.hbase.master.procedure.TestDeleteColumnFamilyProcedure |
|   | org.apache.hadoop.hbase.master.procedure.TestAddColumnFamilyProcedure |
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|| Subsystem || Report/Notes ||
| Docker | Client=1.11.2 Server=1.11.2 Image:yetus/hbase:7bda515 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12834902/HBASE-16931_master_v5.patch
 |
| JIRA Issue | HBASE-16931 |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  hadoopcheck  
hbaseanti  checkstyle  compile  |
| uname | Linux 06f275318878 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed 
Sep 3 21:56:12 UTC 2014 x86_64 x86_64 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 / 97cb1d7 |
| Default Java | 1.8.0_101 |
| findbugs | v3.0.0 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HBASE-Build/4158/artifact/patchprocess/branch-findbugs-hbase-server-warnings.html
 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/4158/artifact/patchprocess/patch-unit-hbase-server.txt
 |
| unit test logs |  
https://builds.apache.org/job/PreCommit-HBASE-Build/4158/artifact/patchprocess/patch-unit-hbase-server.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/4158/testReport/ |
| modules | C: hbase-server U: hbase-server |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/4158/console |
| Powered by | Apache Yetus 0.3.0   http://yetus.apache.org |


This message was automatically generated.



> Setting cell's seqId to zero in compaction flow might cause RS down.
> --------------------------------------------------------------------
>
>                 Key: HBASE-16931
>                 URL: https://issues.apache.org/jira/browse/HBASE-16931
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 2.0.0
>            Reporter: binlijin
>            Assignee: binlijin
>            Priority: Critical
>         Attachments: HBASE-16931-master.patch, HBASE-16931.branch-1.patch, 
> HBASE-16931_master_v2.patch, HBASE-16931_master_v3.patch, 
> HBASE-16931_master_v4.patch, HBASE-16931_master_v5.patch
>
>
> Compactor#performCompaction
>       do {
>         hasMore = scanner.next(cells, scannerContext);
>         // output to writer:
>         for (Cell c : cells) {
>           if (cleanSeqId && c.getSequenceId() <= smallestReadPoint) {
>             CellUtil.setSequenceId(c, 0);
>           }
>           writer.append(c);
>         }
>         cells.clear();
>       } while (hasMore);
> scanner.next will choose at most "hbase.hstore.compaction.kv.max" kvs, the 
> last cell still reference by StoreScanner.prevCell, so if cleanSeqId is 
> called when the scanner.next call StoreScanner.checkScanOrder may throw 
> exception and cause regionserver down.



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