[
https://issues.apache.org/jira/browse/HBASE-23764?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17026120#comment-17026120
]
HBase QA commented on HBASE-23764:
----------------------------------
| (/) *{color:green}+1 overall{color}* |
\\
\\
|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 1m
50s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} dupname {color} | {color:green} 0m
0s{color} | {color:green} No case conflicting files found. {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:orange}-0{color} | {color:orange} test4tests {color} | {color:orange}
0m 0s{color} | {color:orange} The patch doesn't appear to include any new or
modified tests. Please justify why no new tests are needed for this patch. Also
please list what manual steps were performed to verify this patch. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 6m
23s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} refguide {color} | {color:blue} 5m
25s{color} | {color:blue} branch has no errors when building the reference
guide. See footer for rendered docs, which you should manually inspect. {color}
|
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
22s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 5m
32s{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} xml {color} | {color:green} 0m
1s{color} | {color:green} The patch has no ill-formed XML file. {color} |
| {color:blue}0{color} | {color:blue} refguide {color} | {color:blue} 5m
29s{color} | {color:blue} patch has no errors when building the reference
guide. See footer for rendered docs, which you should manually inspect. {color}
|
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
21s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 3m
8s{color} | {color:green} hbase-common in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
12s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 30m 0s{color} |
{color:black} {color} |
\\
\\
|| Subsystem || Report/Notes ||
| Docker | Client=19.03.5 Server=19.03.5 base:
https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-1106/1/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hbase/pull/1106 |
| JIRA Issue | HBASE-23764 |
| Optional Tests | dupname asflicense javac javadoc unit refguide xml |
| uname | Linux 04c89cf0470f 4.15.0-74-generic #84-Ubuntu SMP Thu Dec 19
08:06:28 UTC 2019 x86_64 GNU/Linux |
| Build tool | maven |
| Personality |
/home/jenkins/jenkins-slave/workspace/Base-PreCommit-GitHub-PR_PR-1106/out/precommit/personality/provided.sh
|
| git revision | master / 66d198d35f |
| Default Java | 1.8.0_181 |
| refguide |
https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-1106/1/artifact/out/branch-site/book.html
|
| refguide |
https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-1106/1/artifact/out/patch-site/book.html
|
| Test Results |
https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-1106/1/testReport/
|
| Max. process+thread count | 255 (vs. ulimit of 10000) |
| modules | C: hbase-common U: hbase-common |
| Console output |
https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-1106/1/console |
| versions | git=2.11.0 maven=2018-06-17T18:33:14Z) |
| Powered by | Apache Yetus 0.11.1 https://yetus.apache.org |
This message was automatically generated.
> Flaky tests due to ZK client name resolution delays
> ---------------------------------------------------
>
> Key: HBASE-23764
> URL: https://issues.apache.org/jira/browse/HBASE-23764
> Project: HBase
> Issue Type: Bug
> Components: test
> Affects Versions: 3.0.0
> Reporter: Bharath Vissapragada
> Assignee: Bharath Vissapragada
> Priority: Major
>
> [~ndimiduk] and I ran into this issue (separately) and we noticed that there
> are some performance issues with name resolution in the Zookeeper client.
> Since we use ZK heavily in the unit tests, this often manifests as the
> following issues
> 1. Test time outs starting the mini cluster (Master failed to start....)
> 2. InterruptedException (because the tests timeout)
> 3. Flaky tests because a subset of the cluster fails to start for whatever
> reason (replication tests especially because they spawn multiple clusters).
> 4. ConnectionLoss to znode /hbase/xyzz.. JVM pause?
> I have strong feeling that this is a possible cause for many of our flaky
> tests in Jenkins. Luckily, it looks like the following workaround to switch
> to an IP address instead of hostname makes it much quicker. There are some
> related discussions in the ZK community (ZOOKEEPER-1666 and related jiras).
> {code:java}
> --- a/hbase-common/src/main/resources/hbase-default.xml
> +++ b/hbase-common/src/main/resources/hbase-default.xml
> @@ -72,7 +72,7 @@ possible configurations would overwhelm and obscure the
> important.
> </property>
> <property>
> <name>hbase.zookeeper.quorum</name>
> - <value>localhost</value>
> + <value>127.0.0.1</value>
> <description>Comma separated list of servers in the ZooKeeper ensemble
> (This config. should have been named hbase.zookeeper.ensemble).
> For example, "host1.mydomain.com,host2.mydomain.com,host3.mydomain.com".
> {code}
> Until we figure out the actual root cause and a dependency upgrade (if
> needed), we should consider making this hostname to IP switch for more stable
> builds.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
