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https://issues.apache.org/jira/browse/HBASE-15871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15324360#comment-15324360
]
Hadoop QA commented on HBASE-15871:
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| (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} 4m
59s {color} | {color:green} branch-1.1 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 32s
{color} | {color:green} branch-1.1 passed with JDK v1.8.0 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 30s
{color} | {color:green} branch-1.1 passed with JDK v1.7.0_79 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
28s {color} | {color:green} branch-1.1 passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
19s {color} | {color:green} branch-1.1 passed {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 1m 42s
{color} | {color:red} hbase-server in branch-1.1 has 78 extant Findbugs
warnings. {color} |
| {color:red}-1{color} | {color:red} javadoc {color} | {color:red} 0m 30s
{color} | {color:red} hbase-server in branch-1.1 failed with JDK v1.8.0.
{color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 31s
{color} | {color:green} branch-1.1 passed with JDK v1.7.0_79 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
35s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 33s
{color} | {color:green} the patch passed with JDK v1.8.0 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 33s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 29s
{color} | {color:green} the patch passed with JDK v1.7.0_79 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 29s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
21s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
15s {color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red} 0m 0s
{color} | {color:red} The patch has 14 line(s) that end in whitespace. Use git
apply --whitespace=fix. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green}
10m 38s {color} | {color:green} Patch does not cause any errors with Hadoop
2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 2.6.1 2.6.2 2.6.3 2.7.1. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m
59s {color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} javadoc {color} | {color:red} 0m 24s
{color} | {color:red} hbase-server in the patch failed with JDK v1.8.0. {color}
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| {color:red}-1{color} | {color:red} javadoc {color} | {color:red} 2m 53s
{color} | {color:red} hbase-server-jdk1.7.0_79 with JDK v1.7.0_79 generated 1
new + 16 unchanged - 0 fixed = 17 total (was 16) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 30s
{color} | {color:green} the patch passed with JDK v1.7.0_79 {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 83m 9s {color}
| {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
24s {color} | {color:green} Patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 109m 15s {color}
| {color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.hbase.util.TestHBaseFsck |
| | hadoop.hbase.regionserver.TestWALLockup |
| | hadoop.hbase.master.TestDistributedLogSplitting |
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|| Subsystem || Report/Notes ||
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12809427/HBASE-15871.branch-1.1.003.patch
|
| JIRA Issue | HBASE-15871 |
| Optional Tests | asflicense javac javadoc unit findbugs hadoopcheck
hbaseanti checkstyle compile |
| uname | Linux asf907.gq1.ygridcore.net 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/component/dev-support/hbase-personality.sh
|
| git revision | branch-1.1 / 737b1d6 |
| 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 |
| findbugs |
https://builds.apache.org/job/PreCommit-HBASE-Build/2173/artifact/patchprocess/branch-findbugs-hbase-server-warnings.html
|
| javadoc |
https://builds.apache.org/job/PreCommit-HBASE-Build/2173/artifact/patchprocess/branch-javadoc-hbase-server-jdk1.8.0.txt
|
| whitespace |
https://builds.apache.org/job/PreCommit-HBASE-Build/2173/artifact/patchprocess/whitespace-eol.txt
|
| javadoc |
https://builds.apache.org/job/PreCommit-HBASE-Build/2173/artifact/patchprocess/patch-javadoc-hbase-server-jdk1.8.0.txt
|
| javadoc | hbase-server-jdk1.7.0_79:
https://builds.apache.org/job/PreCommit-HBASE-Build/2173/artifact/patchprocess/diff-javadoc-javadoc-hbase-server-jdk1.7.0_79.txt
|
| unit |
https://builds.apache.org/job/PreCommit-HBASE-Build/2173/artifact/patchprocess/patch-unit-hbase-server.txt
|
| unit test logs |
https://builds.apache.org/job/PreCommit-HBASE-Build/2173/artifact/patchprocess/patch-unit-hbase-server.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/2173/testReport/ |
| modules | C: hbase-server U: hbase-server |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/2173/console |
| Powered by | Apache Yetus 0.2.1 http://yetus.apache.org |
This message was automatically generated.
> Memstore flush doesn't finish because of backwardseek() in memstore scanner.
> ----------------------------------------------------------------------------
>
> Key: HBASE-15871
> URL: https://issues.apache.org/jira/browse/HBASE-15871
> Project: HBase
> Issue Type: Bug
> Components: Scanners
> Affects Versions: 1.1.2
> Reporter: Jeongdae Kim
> Fix For: 1.1.2
>
> Attachments: HBASE-15871.branch-1.1.001.patch,
> HBASE-15871.branch-1.1.002.patch, HBASE-15871.branch-1.1.003.patch,
> memstore_backwardSeek().PNG
>
>
> Sometimes in our production hbase cluster, it takes a long time to finish
> memstore flush.( for about more than 30 minutes)
> the reason is that a memstore flusher thread calls
> StoreScanner.updateReaders(), waits for acquiring a lock that store scanner
> holds in StoreScanner.next() and backwardseek() in memstore scanner runs for
> a long time.
> I think that this condition could occur in reverse scan by the following
> process.
> 1) create a reversed store scanner by requesting a reverse scan.
> 2) flush a memstore in the same HStore.
> 3) puts a lot of cells in memstore and memstore is almost full.
> 4) call the reverse scanner.next() and re-create all scanners in this store
> because all scanners was already closed by 2)'s flush() and backwardseek()
> with store's lastTop for all new scanners.
> 5) in this status, memstore is almost full by 2) and all cells in memstore
> have sequenceID greater than this scanner's readPoint because of 2)'s
> flush(). this condition causes searching all cells in memstore, and
> seekToPreviousRow() repeatly seach cells that are already searched if a row
> has one column. (described this in more detail in a attached file.)
> 6) flush a memstore again in the same HStore, and wait until 4-5) process
> finished, to update store files in the same HStore after flusing.
> I searched HBase jira. and found a similar issue. (HBASE-14497) but,
> HBASE-14497's fix can't solve this issue because that fix just changed
> recursive call to loop.(and already applied to our HBase version)
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