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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17339) Scan-Memory-First Optimization for Get Operations
Date Wed, 08 Feb 2017 12:33:42 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15857928#comment-15857928
] 

Hadoop QA commented on HBASE-17339:
-----------------------------------

| (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 18s {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 2 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} 3m 8s {color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 58s {color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 45s {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 36s {color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 45s {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} 1m 6s {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 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 58s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 48s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 26s {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:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 1m 53s {color} | {color:red}
The patch causes 17 errors with Hadoop v2.6.1. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 3m 45s {color} | {color:red}
The patch causes 17 errors with Hadoop v2.6.2. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 5m 33s {color} | {color:red}
The patch causes 17 errors with Hadoop v2.6.3. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 7m 20s {color} | {color:red}
The patch causes 17 errors with Hadoop v2.6.4. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 9m 12s {color} | {color:red}
The patch causes 17 errors with Hadoop v2.6.5. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 10m 57s {color} | {color:red}
The patch causes 17 errors with Hadoop v2.7.1. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 12m 42s {color} | {color:red}
The patch causes 17 errors with Hadoop v2.7.2. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 14m 28s {color} | {color:red}
The patch causes 17 errors with Hadoop v2.7.3. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red} 16m 15s {color} | {color:red}
The patch causes 17 errors with Hadoop v3.0.0-alpha2. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 1m 55s {color} | {color:red}
hbase-server generated 1 new + 0 unchanged - 0 fixed = 1 total (was 0) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 43s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 2m 15s {color} | {color:green}
hbase-client in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 82m 6s {color} | {color:red}
hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 32s {color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 117m 56s {color} | {color:black}
{color} |
\\
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|| Reason || Tests ||
| FindBugs | module:hbase-server |
|  |  Suspicious comparison of Long references in org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.recheckTSMonotonicity(InternalScan)
 At HRegion.java:in org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.recheckTSMonotonicity(InternalScan)
 At HRegion.java:[line 6430] |
| Failed junit tests | hadoop.hbase.TestJMXListener |
|   | hadoop.hbase.client.TestZKAsyncRegistry |
|   | hadoop.hbase.replication.regionserver.TestRegionReplicaReplicationEndpointNoMaster |
|   | hadoop.hbase.regionserver.TestCompactSplitThread |
|   | hadoop.hbase.client.TestSnapshotFromClient |
|   | hadoop.hbase.client.TestSnapshotFromClientWithRegionReplicas |
|   | hadoop.hbase.client.TestReplicaWithCluster |
|   | hadoop.hbase.client.TestReplicasClient |
|   | hadoop.hbase.regionserver.TestSplitTransactionOnCluster |
| Timed out junit tests | org.apache.hadoop.hbase.TestHBaseTestingUtility |
|   | org.apache.hadoop.hbase.snapshot.TestSecureExportSnapshot |
|   | org.apache.hadoop.hbase.TestAcidGuarantees |
|   | org.apache.hadoop.hbase.snapshot.TestMobExportSnapshot |
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|| Subsystem || Report/Notes ||
| Docker | Client=1.12.6 Server=1.12.6 Image:yetus/hbase:8d52d23 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12851602/HBASE-17339-V04.patch
|
| JIRA Issue | HBASE-17339 |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  hadoopcheck  hbaseanti  checkstyle
 compile  |
| uname | Linux dad15154c8e9 3.13.0-100-generic #147-Ubuntu SMP Tue Oct 18 16:48:51 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 / d8f3c6c |
| Default Java | 1.8.0_121 |
| findbugs | v3.0.0 |
| findbugs | https://builds.apache.org/job/PreCommit-HBASE-Build/5630/artifact/patchprocess/new-findbugs-hbase-server.html
|
| unit | https://builds.apache.org/job/PreCommit-HBASE-Build/5630/artifact/patchprocess/patch-unit-hbase-server.txt
|
| unit test logs |  https://builds.apache.org/job/PreCommit-HBASE-Build/5630/artifact/patchprocess/patch-unit-hbase-server.txt
|
|  Test Results | https://builds.apache.org/job/PreCommit-HBASE-Build/5630/testReport/ |
| modules | C: hbase-client hbase-server U: . |
| Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/5630/console |
| Powered by | Apache Yetus 0.3.0   http://yetus.apache.org |


This message was automatically generated.



> Scan-Memory-First Optimization for Get Operations
> -------------------------------------------------
>
>                 Key: HBASE-17339
>                 URL: https://issues.apache.org/jira/browse/HBASE-17339
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Eshcar Hillel
>            Assignee: Eshcar Hillel
>         Attachments: HBASE-17339-V01.patch, HBASE-17339-V02.patch, HBASE-17339-V03.patch,
HBASE-17339-V03.patch, HBASE-17339-V04.patch
>
>
> The current implementation of a get operation (to retrieve values for a specific key)
scans through all relevant stores of the region; for each store both memory components (memstores
segments) and disk components (hfiles) are scanned in parallel.
> We suggest to apply an optimization that speculatively scans memory-only components first
and only if the result is incomplete scans both memory and disk.



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