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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18019) Clear redundant memstore scanners
Date Wed, 17 May 2017 00:22:04 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16013299#comment-16013299
] 

Hadoop QA commented on HBASE-18019:
-----------------------------------

| (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 19s {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 1 new or modified test files. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 4m 17s {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} 1m 1s {color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 20s {color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 9s {color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 30s {color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 51s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 42s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 42s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 49s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 16s {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} 33m 37s {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 34s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 29s {color} |
{color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 102m 20s {color} | {color:red}
hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 1m 6s {color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 152m 52s {color} | {color:black}
{color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.hbase.quotas.TestQuotaThrottle |
| Timed out junit tests | org.apache.hadoop.hbase.util.hbck.TestOfflineMetaRebuildHole |
|   | org.apache.hadoop.hbase.util.TestMiniClusterLoadEncoded |
|   | org.apache.hadoop.hbase.snapshot.TestMobExportSnapshot |
|   | org.apache.hadoop.hbase.filter.TestFuzzyRowFilterEndToEnd |
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|| Subsystem || Report/Notes ||
| Docker | Client=1.10.1 Server=1.10.1 Image:yetus/hbase:757bf37 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12868403/HBASE-18019.v0.patch
|
| JIRA Issue | HBASE-18019 |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  hadoopcheck  hbaseanti  checkstyle
 compile  |
| uname | Linux d60ed77451ad 3.19.0-25-generic #26~14.04.1-Ubuntu SMP Fri Jul 24 21:16:20
UTC 2015 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 / a8775b1 |
| Default Java | 1.8.0_131 |
| findbugs | v3.0.0 |
| unit | https://builds.apache.org/job/PreCommit-HBASE-Build/6816/artifact/patchprocess/patch-unit-hbase-server.txt
|
| unit test logs |  https://builds.apache.org/job/PreCommit-HBASE-Build/6816/artifact/patchprocess/patch-unit-hbase-server.txt
|
|  Test Results | https://builds.apache.org/job/PreCommit-HBASE-Build/6816/testReport/ |
| modules | C: hbase-server U: hbase-server |
| Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/6816/console |
| Powered by | Apache Yetus 0.3.0   http://yetus.apache.org |


This message was automatically generated.



> Clear redundant memstore scanners
> ---------------------------------
>
>                 Key: HBASE-18019
>                 URL: https://issues.apache.org/jira/browse/HBASE-18019
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 2.0.0
>            Reporter: Chia-Ping Tsai
>            Assignee: Chia-Ping Tsai
>             Fix For: 2.0.0
>
>         Attachments: HBASE-18019.v0.patch
>
>
> The HBASE-17655 remove the MemStoreScanner and it causes that the MemStore#getScanner(readpt)
returns multi KeyValueScanner which consist of active, snapshot and pipeline. But StoreScanner
only remove one mem scanner when refreshing current scanners.
> {code}
>     for (int i = 0; i < currentScanners.size(); i++) {
>       if (!currentScanners.get(i).isFileScanner()) {
>         currentScanners.remove(i);
>         break;
>       }
>     }
> {code}
> The older scanners kept in the StoreScanner will hinder GC from releasing memory and
lead to multiple scans on the same data.
>  



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