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https://issues.apache.org/jira/browse/HBASE-19506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16364580#comment-16364580
 ] 

Hadoop QA commented on HBASE-19506:
-----------------------------------

| (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 
12s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m  
0s{color} | {color:blue} Findbugs executables are not available. {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 4 new or modified test 
files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  3m 
50s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
37s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
52s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  4m 
52s{color} | {color:green} branch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
25s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  3m 
55s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
38s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
38s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 
54s{color} | {color:red} hbase-server: The patch generated 1 new + 29 unchanged 
- 3 fixed = 30 total (was 32) {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 
 3s{color} | {color:green} patch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  5m 
59s{color} | {color:red} The patch causes 10 errors with Hadoop v2.6.5. {color} 
|
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  7m 
55s{color} | {color:red} The patch causes 10 errors with Hadoop v2.7.4. {color} 
|
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  9m 
57s{color} | {color:red} The patch causes 10 errors with Hadoop v3.0.0. {color} 
|
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
26s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}122m 41s{color} 
| {color:red} hbase-server in the patch failed. {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}149m  3s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | 
hadoop.hbase.regionserver.TestWalAndCompactingMemStoreFlush |
|   | hadoop.hbase.client.TestSnapshotFromClientWithRegionReplicas |
|   | hadoop.hbase.client.TestMobSnapshotFromClient |
|   | hadoop.hbase.master.cleaner.TestSnapshotFromMaster |
|   | hadoop.hbase.client.TestSnapshotMetadata |
|   | hadoop.hbase.regionserver.TestCompactSplitThread |
|   | hadoop.hbase.client.TestSnapshotCloneIndependence |
|   | hadoop.hbase.filter.TestFuzzyRowFilterEndToEnd |
|   | hadoop.hbase.client.TestSnapshotFromClient |
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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-19506 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12910600/HBASE-19506-V06.patch 
|
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  shadedjars  
hadoopcheck  hbaseanti  checkstyle  compile  |
| uname | Linux 77b272599238 4.4.0-43-generic #63-Ubuntu SMP Wed Oct 12 
13:48:03 UTC 2016 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 / 8d26736bc2 |
| maven | version: Apache Maven 3.5.2 
(138edd61fd100ec658bfa2d307c43b76940a5d7d; 2017-10-18T07:58:13Z) |
| Default Java | 1.8.0_151 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HBASE-Build/11525/artifact/patchprocess/diff-checkstyle-hbase-server.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/11525/artifact/patchprocess/patch-unit-hbase-server.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/11525/testReport/ |
| Max. process+thread count | 5277 (vs. ulimit of 10000) |
| modules | C: hbase-server U: hbase-server |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/11525/console |
| Powered by | Apache Yetus 0.7.0   http://yetus.apache.org |


This message was automatically generated.



> Support variable sized chunks from ChunkCreator
> -----------------------------------------------
>
>                 Key: HBASE-19506
>                 URL: https://issues.apache.org/jira/browse/HBASE-19506
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Anastasia Braginsky
>            Priority: Major
>         Attachments: HBASE-19506-V01.patch, HBASE-19506-V02.patch, 
> HBASE-19506-V03.patch, HBASE-19506-V04.patch, HBASE-19506-V05.patch, 
> HBASE-19506-V06.patch
>
>
> When CellChunkMap is created it allocates a special index chunk (or chunks) 
> where array of cell-representations is stored. When the number of 
> cell-representations is small, it is preferable to allocate a chunk smaller 
> than a default value which is 2MB.
> On the other hand, those "non-standard size" chunks can not be used in pool. 
> On-demand allocations in off-heap are costly. So this JIRA is about to 
> investigate the trade of between memory usage and the final performance. 



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