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https://issues.apache.org/jira/browse/HBASE-15077?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15092929#comment-15092929
 ] 

Hadoop QA commented on HBASE-15077:
-----------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {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:green}+1{color} | {color:green} mvninstall {color} | {color:green} 2m 
51s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 41s 
{color} | {color:green} master passed with JDK v1.8.0 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 59s 
{color} | {color:green} master passed with JDK v1.7.0_79 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 5m 
49s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
27s {color} | {color:green} master passed {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 0m 57s 
{color} | {color:red} hbase-common in master has 14 extant Findbugs warnings. 
{color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 2m 15s 
{color} | {color:red} hbase-server in master has 83 extant Findbugs warnings. 
{color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 14s 
{color} | {color:green} master passed with JDK v1.8.0 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 2s 
{color} | {color:green} master passed with JDK v1.7.0_79 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 
13s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 36s 
{color} | {color:green} the patch passed with JDK v1.8.0 {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red} 7m 21s {color} 
| {color:red} hbase-common-jdk1.8.0 with JDK v1.8.0 generated 3 new issues (was 
25, now 25). {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 36s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 58s 
{color} | {color:green} the patch passed with JDK v1.7.0_79 {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red} 8m 20s {color} 
| {color:red} hbase-common-jdk1.7.0_79 with JDK v1.7.0_79 generated 3 new 
issues (was 25, now 25). {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 58s 
{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 4m 21s 
{color} | {color:red} Patch generated 1 new checkstyle issues in hbase-server 
(total was 52, now 52). {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
25s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m 
0s {color} | {color:green} Patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green} 
25m 19s {color} | {color:green} Patch does not cause any errors with Hadoop 
2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 2.6.1 2.6.2 2.6.3 2.7.1. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m 0s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 28s 
{color} | {color:green} the patch passed with JDK v1.8.0 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 7s 
{color} | {color:green} the patch passed with JDK v1.7.0_79 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 2m 41s 
{color} | {color:green} hbase-common in the patch passed with JDK v1.8.0. 
{color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 138m 37s 
{color} | {color:red} hbase-server in the patch failed with JDK v1.8.0. {color} 
|
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 2m 13s 
{color} | {color:green} hbase-common in the patch passed with JDK v1.7.0_79. 
{color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 104m 56s 
{color} | {color:red} hbase-server in the patch failed with JDK v1.7.0_79. 
{color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 
26s {color} | {color:green} Patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 308m 39s {color} 
| {color:black} {color} |
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|| Reason || Tests ||
| JDK v1.8.0 Failed junit tests | 
hadoop.hbase.master.balancer.TestStochasticLoadBalancer |
|   | hadoop.hbase.client.TestLeaseRenewal |
| JDK v1.7.0_79 Timed out junit tests | 
org.apache.hadoop.hbase.regionserver.TestRegionReplicas |
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|| Subsystem || Report/Notes ||
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12781498/HBASE-15077_V3.patch |
| JIRA Issue | HBASE-15077 |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  hadoopcheck  
hbaseanti  checkstyle  compile  |
| uname | Linux asf900.gq1.ygridcore.net 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@2/component/dev-support/hbase-personality.sh
 |
| git revision | master / ec47a81 |
| findbugs | v3.0.0 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HBASE-Build/63/artifact/patchprocess/branch-findbugs-hbase-common-warnings.html
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HBASE-Build/63/artifact/patchprocess/branch-findbugs-hbase-server-warnings.html
 |
| javac | hbase-common-jdk1.8.0: 
https://builds.apache.org/job/PreCommit-HBASE-Build/63/artifact/patchprocess/diff-compile-javac-hbase-common-jdk1.8.0.txt
 |
| javac | hbase-common-jdk1.7.0_79: 
https://builds.apache.org/job/PreCommit-HBASE-Build/63/artifact/patchprocess/diff-compile-javac-hbase-common-jdk1.7.0_79.txt
 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HBASE-Build/63/artifact/patchprocess/diff-checkstyle-hbase-server.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/63/artifact/patchprocess/patch-unit-hbase-server-jdk1.8.0.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/63/artifact/patchprocess/patch-unit-hbase-server-jdk1.7.0_79.txt
 |
| unit test logs |  
https://builds.apache.org/job/PreCommit-HBASE-Build/63/artifact/patchprocess/patch-unit-hbase-server-jdk1.8.0.txt
 
https://builds.apache.org/job/PreCommit-HBASE-Build/63/artifact/patchprocess/patch-unit-hbase-server-jdk1.7.0_79.txt
 |
| JDK v1.7.0_79  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/63/testReport/ |
| modules | C: hbase-common hbase-server U: . |
| Max memory used | 192MB |
| Powered by | Apache Yetus 0.1.0   http://yetus.apache.org |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/63/console |


This message was automatically generated.



> Support OffheapKV write in compaction with out copying data on heap
> -------------------------------------------------------------------
>
>                 Key: HBASE-15077
>                 URL: https://issues.apache.org/jira/browse/HBASE-15077
>             Project: HBase
>          Issue Type: Sub-task
>          Components: regionserver, Scanners
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>             Fix For: 2.0.0
>
>         Attachments: HBASE-15077.patch, HBASE-15077_V2.patch, 
> HBASE-15077_V2.patch, HBASE-15077_V3.patch
>
>
> HBASE-14832  is not enough to handle this.  Doing the remaining needed here.
> {code}
>  if (cell instanceof ByteBufferedCell) {
> 890         out.writeShort(rowLen);
> 891         ByteBufferUtils.copyBufferToStream(out, ((ByteBufferedCell) 
> cell).getRowByteBuffer(),
> 892           ((ByteBufferedCell) cell).getRowPosition(), rowLen);
> 893         out.writeByte(fLen);
> 894         ByteBufferUtils.copyBufferToStream(out, ((ByteBufferedCell) 
> cell).getFamilyByteBuffer(),
> 895           ((ByteBufferedCell) cell).getFamilyPosition(), fLen);
> 896         ByteBufferUtils.copyBufferToStream(out, ((ByteBufferedCell) 
> cell).getQualifierByteBuffer(),
> 897           ((ByteBufferedCell) cell).getQualifierPosition(), qLen);
> {code}
> We have done this but it is not really helping us!  
> In ByteBufferUtils#copyBufferToStream
> {code}
> public static void copyBufferToStream(OutputStream out, ByteBuffer in,
>       int offset, int length) throws IOException {
>     if (in.hasArray()) {
>       out.write(in.array(), in.arrayOffset() + offset,
>           length);
>     } else {
>       for (int i = 0; i < length; ++i) {
>         out.write(toByte(in, offset + i));
>       }
>     }
>   }
>   {code}
> So for DBB it is so costly op writing byte by byte reading each to on heap.
> Even if we use writeByteBuffer(OutputStream out, ByteBuffer b, int offset, 
> int length), it won't help us as the underlying stream is a 
> ByteArrayOutputStream and so we will end up in copying.



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