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https://issues.apache.org/jira/browse/HBASE-17718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15898089#comment-15898089
]
Hadoop QA commented on HBASE-17718:
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 26s
{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 3 new or modified test
files. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 3m
50s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 41s
{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
53s {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
57s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 31s
{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
46s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 44s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 44s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
52s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
16s {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} hadoopcheck {color} | {color:green}
31m 8s {color} | {color:green} Patch does not cause any errors with Hadoop
2.6.1 2.6.2 2.6.3 2.6.4 2.6.5 2.7.1 2.7.2 2.7.3 or 3.0.0-alpha2. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 4s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 31s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 106m 52s
{color} | {color:green} hbase-server in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
19s {color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 152m 33s {color}
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|| Subsystem || Report/Notes ||
| Docker | Client=1.12.3 Server=1.12.3 Image:yetus/hbase:8d52d23 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12856326/HBASE-17718.master.003.patch
|
| JIRA Issue | HBASE-17718 |
| Optional Tests | asflicense javac javadoc unit findbugs hadoopcheck
hbaseanti checkstyle compile |
| uname | Linux 50a544df6f78 3.13.0-105-generic #152-Ubuntu SMP Fri Dec 2
15:37:11 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 / d2349c6 |
| Default Java | 1.8.0_121 |
| findbugs | v3.0.0 |
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/5968/testReport/ |
| modules | C: hbase-server U: hbase-server |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/5968/console |
| Powered by | Apache Yetus 0.3.0 http://yetus.apache.org |
This message was automatically generated.
> Difference between RS's servername and its ephemeral node cause SSH stop
> working
> --------------------------------------------------------------------------------
>
> Key: HBASE-17718
> URL: https://issues.apache.org/jira/browse/HBASE-17718
> Project: HBase
> Issue Type: Bug
> Affects Versions: 2.0.0, 1.2.4, 1.1.8
> Reporter: Allan Yang
> Assignee: Allan Yang
> Attachments: HBASE-17718.master.001.patch,
> HBASE-17718.master.002.patch, HBASE-17718.master.003.patch
>
>
> After HBASE-9593, RS put up an ephemeral node in ZK before reporting for
> duty. But if the hosts config (/etc/hosts) is different between master and
> RS, RS's serverName can be different from the one stored the ephemeral zk
> node. The email metioned in HBASE-13753
> (http://mail-archives.apache.org/mod_mbox/hbase-user/201505.mbox/%3CCANZDn9ueFEEuZMx=pZdmtLsdGLyZz=rrm1N6EQvLswYc1z-H=g...@mail.gmail.com%3E)
> is exactly what happened in our production env.
> But what the email didn't point out is that the difference between serverName
> in RS and zk node can cause SSH stop to work. as we can see from the code in
> {{RegionServerTracker}}
> {code}
> @Override
> public void nodeDeleted(String path) {
> if (path.startsWith(watcher.rsZNode)) {
> String serverName = ZKUtil.getNodeName(path);
> LOG.info("RegionServer ephemeral node deleted, processing expiration ["
> +
> serverName + "]");
> ServerName sn = ServerName.parseServerName(serverName);
> if (!serverManager.isServerOnline(sn)) {
> LOG.warn(serverName.toString() + " is not online or isn't known to
> the master."+
> "The latter could be caused by a DNS misconfiguration.");
> return;
> }
> remove(sn);
> this.serverManager.expireServer(sn);
> }
> }
> {code}
> The server will not be processed by SSH/ServerCrashProcedure. The regions on
> this server will not been assigned again until master restart or failover.
> I know HBASE-9593 was to fix the issue if RS report to duty and crashed
> before it can put up a zk node. It is a very rare case(And controllableļ¼ just
> fix the bug making rs to crash). But The issue I metioned can happened more
> often(and uncontrollable, can't be fixed in HBase, due to DNS, hosts config,
> etc.) and have more severe consequence.
> So here I offer some solutions to discuss:
> 1. Revert HBASE-9593 from all branches, Andrew Purtell has reverted it in
> branch-0.98
> 2. Abort RS if master return a different name, otherwise SSH can't work
> properly
> 3. Master accepts whatever servername reported by RS and don't change it.
> 4.correct the zk node if master return another name( idea from Ted Yu)
>
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