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Hadoop QA commented on HBASE-17644: ----------------------------------- | (/) *{color:green}+1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 15s {color} | {color:blue} Docker mode activated. {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 15 new or modified test files. {color} | | {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 10s {color} | {color:blue} Maven dependency ordering for branch {color} | | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 2m 58s {color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 51s {color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 42s {color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 24s {color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 15s {color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 42s {color} | {color:green} master passed {color} | | {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 11s {color} | {color:blue} Maven dependency ordering for patch {color} | | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 58s {color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 50s {color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 50s {color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 39s {color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 23s {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 4s {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-alpha2. {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 32s {color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 42s {color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} unit {color} | {color:green} 1m 51s {color} | {color:green} hbase-common in the patch passed. {color} | | {color:green}+1{color} | {color:green} unit {color} | {color:green} 97m 9s {color} | {color:green} hbase-server in the patch passed. {color} | | {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 27s {color} | {color:green} The patch does not generate ASF License warnings. {color} | | {color:black}{color} | {color:black} {color} | {color:black} 141m 37s {color} | {color:black} {color} | \\ \\ || Subsystem || Report/Notes || | Docker | Client=1.12.3 Server=1.12.3 Image:yetus/hbase:8d52d23 | | JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12853048/HBASE-17644_V3.patch | | JIRA Issue | HBASE-17644 | | Optional Tests | asflicense javac javadoc unit findbugs hadoopcheck hbaseanti checkstyle compile | | uname | Linux 6e01631120b3 3.13.0-106-generic #153-Ubuntu SMP Tue Dec 6 15:44:32 UTC 2016 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 / 0446ed0 | | Default Java | 1.8.0_121 | | findbugs | v3.0.0 | | Test Results | https://builds.apache.org/job/PreCommit-HBASE-Build/5736/testReport/ | | modules | C: hbase-common hbase-server U: . | | Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/5736/console | | Powered by | Apache Yetus 0.3.0 http://yetus.apache.org | This message was automatically generated. > Always create ByteBufferCells after copying to MSLAB > ---------------------------------------------------- > > Key: HBASE-17644 > URL: https://issues.apache.org/jira/browse/HBASE-17644 > Project: HBase > Issue Type: Sub-task > Components: regionserver > Affects Versions: 2.0.0 > Reporter: ramkrishna.s.vasudevan > Assignee: Anoop Sam John > Fix For: 2.0.0 > > Attachments: HBASE-17644.patch, HBASE-17644_V2.patch, > HBASE-17644_V3.patch > > > We create a cell out of the Bytebuffer that is returned by MSLAB. This BB can > be offheap or onheap type. If MSLAB is full we return onheap byte buffer. So > the place where we create a cell by copying data to this buffer we either > create KeyValue or OffheapKV based on the buffer type. So what we saw in > tests is that since we have a combination of Cells the comparisons that > happens when adding to memstore happens millions of times and that has an > impact on the performance of write path. In read path this is not significant > enougth (though we have plans to just create one type of cells every where in > Server side). -- This message was sent by Atlassian JIRA (v6.3.15#6346)