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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15759) RegionObserver.preStoreScannerOpen() doesn't have acces to current readpoint
Date Thu, 05 May 2016 21:57:12 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15273179#comment-15273179
] 

Hadoop QA commented on HBASE-15759:
-----------------------------------

| (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} 3m 10s {color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 48s {color} |
{color:green} master passed with JDK v1.8.0 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 33s {color} |
{color:green} master passed with JDK v1.7.0_79 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 4m 21s {color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 16s {color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m 53s {color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 26s {color} |
{color:green} master passed with JDK v1.8.0 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 33s {color} |
{color:green} master passed with JDK v1.7.0_79 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 42s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 43s {color} |
{color:green} the patch passed with JDK v1.8.0 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 43s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 32s {color} |
{color:green} the patch passed with JDK v1.7.0_79 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 32s {color} | {color:green}
the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 4m 46s {color} | {color:red}
hbase-server: patch generated 2 new + 316 unchanged - 2 fixed = 318 total (was 318) {color}
|
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 15s {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} 8m 52s {color}
| {color:green} Patch does not cause any errors with Hadoop 2.4.1 2.5.2 2.6.0. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 13s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 30s {color} |
{color:green} the patch passed with JDK v1.8.0 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 33s {color} |
{color:green} the patch passed with JDK v1.7.0_79 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 107m 58s {color} | {color:green}
hbase-server in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 15s {color}
| {color:green} Patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 139m 43s {color} | {color:black}
{color} |
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|| Subsystem || Report/Notes ||
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12802499/15759.v4.patch
|
| JIRA Issue | HBASE-15759 |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  hadoopcheck  hbaseanti  checkstyle
 compile  |
| uname | Linux pietas.apache.org 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/test_framework/yetus-0.2.1/lib/precommit/personality/hbase.sh
|
| git revision | master / b7ce55f |
| Default Java | 1.7.0_79 |
| Multi-JDK versions |  /home/jenkins/tools/java/jdk1.8.0:1.8.0 /usr/local/jenkins/java/jdk1.7.0_79:1.7.0_79
|
| findbugs | v3.0.0 |
| checkstyle | https://builds.apache.org/job/PreCommit-HBASE-Build/1780/artifact/patchprocess/diff-checkstyle-hbase-server.txt
|
|  Test Results | https://builds.apache.org/job/PreCommit-HBASE-Build/1780/testReport/ |
| modules | C: hbase-server U: hbase-server |
| Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/1780/console |
| Powered by | Apache Yetus 0.2.1   http://yetus.apache.org |


This message was automatically generated.



> RegionObserver.preStoreScannerOpen() doesn't have acces to current readpoint
> ----------------------------------------------------------------------------
>
>                 Key: HBASE-15759
>                 URL: https://issues.apache.org/jira/browse/HBASE-15759
>             Project: HBase
>          Issue Type: Improvement
>          Components: Coprocessors
>            Reporter: Marek Srank
>            Assignee: Ted Yu
>            Priority: Minor
>              Labels: coprocessors
>             Fix For: 2.0.0
>
>         Attachments: 15759.v1.patch, 15759.v2.patch, 15759.v3.patch, 15759.v4.patch
>
>
> RegionObserver.preStoreScannerOpen() doesn't have acces to current readpoint. This is
crucial e.g. when creating a new StoreScanner.
> Although it is possible to obtain the readpoint via following workaround:
> ((HStore)store).getHRegion().getReadpoint(IsolationLevel.READ_COMMITTED)
> ...it presumes some knowledge of HBase internals and is not a clear option for user.
> The problem was introduced in HBASE-9754, where readpoint was introduced as an argument
to StoreScanner constructor, but wasn't passed to the preStoreScannerOpen() hook in HStore.getScanner().
> In our case it led to bug, when we were incorrectly using smallestReadpoint() instead,
which made coprocessor missing data in some cases [1].
> __________
> [1] http://mail-archives.apache.org/mod_mbox/hbase-dev/201604.mbox/%3CCAOUjMkwptCGacQ0d-4yOinDVBT%2Bbi2NOZee0fSbq%2Bk1R6V4-aw%40mail.gmail.com%3E



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