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Hadoop QA commented on HBASE-21991: ----------------------------------- | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 22s{color} | {color:blue} Docker mode activated. {color} | || || || || {color:brown} Prechecks {color} || | {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 0m 0s{color} | {color:blue} Findbugs executables are not available. {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:brown} branch-1 Compile Tests {color} || | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 8m 11s{color} | {color:green} branch-1 passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 45s{color} | {color:green} branch-1 passed with JDK v1.8.0_202 {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 45s{color} | {color:green} branch-1 passed with JDK v1.7.0_211 {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 29s{color} | {color:green} branch-1 passed {color} | | {color:green}+1{color} | {color:green} shadedjars {color} | {color:green} 3m 10s{color} | {color:green} branch has no errors when building our shaded downstream artifacts. {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 40s{color} | {color:green} branch-1 passed with JDK v1.8.0_202 {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 45s{color} | {color:green} branch-1 passed with JDK v1.7.0_211 {color} | || || || || {color:brown} Patch Compile Tests {color} || | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 58s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 45s{color} | {color:green} the patch passed with JDK v1.8.0_202 {color} | | {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 45s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 45s{color} | {color:green} the patch passed with JDK v1.7.0_211 {color} | | {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 45s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 29s{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} shadedjars {color} | {color:green} 3m 1s{color} | {color:green} patch has no errors when building our shaded downstream artifacts. {color} | | {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green} 2m 3s{color} | {color:green} Patch does not cause any errors with Hadoop 2.7.4. {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 34s{color} | {color:green} the patch passed with JDK v1.8.0_202 {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 44s{color} | {color:green} the patch passed with JDK v1.7.0_211 {color} | || || || || {color:brown} Other Tests {color} || | {color:red}-1{color} | {color:red} unit {color} | {color:red}154m 14s{color} | {color:red} hbase-server in the patch failed. {color} | | {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 28s{color} | {color:green} The patch does not generate ASF License warnings. {color} | | {color:black}{color} | {color:black} {color} | {color:black}182m 46s{color} | {color:black} {color} | \\ \\ || Reason || Tests || | Failed junit tests | hadoop.hbase.regionserver.TestPerColumnFamilyFlush | | | hadoop.hbase.mapreduce.TestSecureLoadIncrementalHFiles | \\ \\ || Subsystem || Report/Notes || | Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:61288f8 | | JIRA Issue | HBASE-21991 | | JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12963322/hbase-21991.branch-1.002.patch | | Optional Tests | dupname asflicense javac javadoc unit findbugs shadedjars hadoopcheck hbaseanti checkstyle compile | | uname | Linux 2701e1c0a57d 4.4.0-138-generic #164-Ubuntu SMP Tue Oct 2 17:16:02 UTC 2018 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 / c1a64aa | | maven | version: Apache Maven 3.0.5 | | Default Java | 1.7.0_211 | | Multi-JDK versions | /usr/lib/jvm/java-8-openjdk-amd64:1.8.0_202 /usr/lib/jvm/java-7-openjdk-amd64:1.7.0_211 | | unit | https://builds.apache.org/job/PreCommit-HBASE-Build/16476/artifact/patchprocess/patch-unit-hbase-server.txt | | Test Results | https://builds.apache.org/job/PreCommit-HBASE-Build/16476/testReport/ | | Max. process+thread count | 4163 (vs. ulimit of 10000) | | modules | C: hbase-server U: hbase-server | | Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/16476/console | | Powered by | Apache Yetus 0.8.0 http://yetus.apache.org | This message was automatically generated. > Fix MetaMetrics issues - [Race condition, Faulty remove logic], few > improvements > -------------------------------------------------------------------------------- > > Key: HBASE-21991 > URL: https://issues.apache.org/jira/browse/HBASE-21991 > Project: HBase > Issue Type: Bug > Components: Coprocessors, metrics > Reporter: Sakthi > Assignee: Sakthi > Priority: Major > Attachments: hbase-21991.branch-1.001.patch, > hbase-21991.branch-1.002.patch, hbase-21991.master.001.patch, > hbase-21991.master.002.patch, hbase-21991.master.003.patch, > hbase-21991.master.004.patch, hbase-21991.master.005.patch, > hbase-21991.master.006.patch > > > Here is a list of the issues related to the MetaMetrics implementation: > +*Bugs*+: > # [_Lossy counting for top-k_] *Faulty remove logic of non-eligible meters*: > Under certain conditions, we might end up storing/exposing all the meters > rather than top-k-ish > # MetaMetrics can throw NPE resulting in aborting of the RS because of a > *Race Condition*. > +*Improvements*+: > # With high number of regions in the cluster, exposure of metrics for each > region blows up the JMX from ~140 Kbs to 100+ Mbs depending on the number of > regions. It's better to use *lossy counting to maintain top-k for region > metrics* as well. > # As the lossy meters do not represent actual counts, I think, it'll be > better to *rename the meters to include "lossy" in the name*. It would be > more informative while monitoring the metrics and there would be less > confusion regarding actual counts to lossy counts. -- This message was sent by Atlassian JIRA (v7.6.3#76005)