HBASE-27333 Abort RS when the hostname is different from master seen #4732

sunhelly · 2022-08-26T10:47:40Z

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Apache-HBase · 2022-08-26T11:29:11Z

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Apache-HBase · 2022-08-26T14:34:30Z

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Apache-HBase · 2022-08-26T14:41:23Z

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Apache9 · 2022-08-31T07:49:35Z

Mind explain a bit? What do you mean by opposite?

sunhelly · 2022-09-02T09:58:24Z

Thank, @Apache9 . The problem here is that the condition for whether using the servername seen from master or seen from local regionserver when they are different is opposite. It' a problem since branch-1. After line #1347 in HRegionServer, the servername of the regionserver is set to the name seen from master. But if when StringUtils.isBlank(useThisHostnameInstead) && !hostnameFromMasterPOV.equals(rpcServices.getSocketAddress().getHostName(), it means the regionserver should abort(by throwing exception here) and not using the name seen from master.

In short, when the hostname seen from local regionserver and master is different, the current behavior from the code should either restart the regionserver or use the local configed hostname, never the hostname seen from master. Correct me if I missed something. Thanks.

Apache-HBase · 2022-09-02T10:44:44Z

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Apache-HBase · 2022-09-02T13:42:55Z

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Apache-HBase · 2022-09-02T13:51:05Z

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apurtell · 2022-10-06T17:33:45Z

I think we are good here @Apache9 ? Going to merge this tomorrow unless objection.

Apache9 · 2022-10-07T15:19:22Z

This is introduced by https://issues.apache.org/jira/browse/HBASE-12954.

It seemed that we wanted to solve the problem where a region server can not be accessed through the hostname which we bind to. From my understanding, the current logic seems reasonable. If we have configured the hostname to use, but it is different from what master seen us, then this should be a critical problem and we should abort the region server. If not, we just log it, and use the hostname seen by master as it is more likely to be accessed by others.

Does anyone remember the reason why the code is like this?

sunhelly · 2022-10-10T07:43:00Z

Thanks, @Apache9 and @apurtell . After looking at HBASE-12954, I think we should abort the RS when the hostname from master seen is different from RS seen, regardless of whether the hostname has been configured by the RS.
The problem I met is that, the hbase.regionserver.hostname is not configured, but the master do a reverse DNS resolution failed, and used the ip of the RS as the hostname seen, and then the RS is working using its ip as its name, but there are something wrong about its RSGroup now.
I'll change the PR and update the issue name, thanks.

Apache-HBase · 2022-10-10T10:19:57Z

🎊 +1 overall

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Apache-HBase · 2022-10-10T14:50:24Z

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Apache-HBase · 2022-10-10T15:06:27Z

💔 -1 overall

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apurtell

I don't recall why the code is like this.

Since this PR has changed, I've changed my review status to Request Changes. TestMasterUseIp and TestRegionServerUseIp failures might be related. Will approve once the tests are green, or failures are excluded as not related.

sunhelly · 2022-10-11T02:24:21Z

Thanks @apurtell for the review, I'll dig more.

sunhelly · 2022-11-14T16:18:46Z

The UT failed after HBASE-27304 #4713, @2005hithlj, can you take a look?

2005hithlj · 2022-11-15T02:04:59Z

The UT failed after HBASE-27304 #4713, @2005hithlj, can you take a look?

@sunhelly
The UTs seems to fail when starting the test cluster.
You can trigger the preCommit op again, and then check whether the problem will occur again.

sunhelly · 2022-11-15T04:40:30Z

I tested locally, and they definitely failed, @2005hithlj .
https://github.com/apache/hbase/pull/4713/files#diff-e765139484f585c64c366ffd84c397870f6dc8f473c670576041688fdda86e6dR258
The PR here changed the configure to set use ip instead of hostname defaultly, but only master knows this change, regionserver still reports its hostname, then there is some confliction on the codes.
After HBASE-27304, there are three names for the regionserver, one is the IP seen from master, by switch on "hbase.server.useip.enabled", which is not known by regionserver. Anthor is the configured name on regionserver by "hbase.unsafe.regionserver.hostname", which is also reported to master by proto. The other is the regular hostname.

2005hithlj · 2022-11-16T15:30:17Z

I tested locally, and they definitely failed, @2005hithlj . https://github.com/apache/hbase/pull/4713/files#diff-e765139484f585c64c366ffd84c397870f6dc8f473c670576041688fdda86e6dR258 The PR here changed the configure to set use ip instead of hostname defaultly, but only master knows this change, regionserver still reports its hostname, then there is some confliction on the codes. After HBASE-27304, there are three names for the regionserver, one is the IP seen from master, by switch on "hbase.server.useip.enabled", which is not known by regionserver. Anthor is the configured name on regionserver by "hbase.unsafe.regionserver.hostname", which is also reported to master by proto. The other is the regular hostname.

@sunhelly
In my local environment, TestMasterUseIp and TestRegionServerUseIp can execute successfully.
At the same time, I have opened an issue HBASE-27489 to track the problem you described.

sunhelly · 2022-11-17T09:17:00Z

@2005hithlj Good.
By the way, the UTs failed in this PR are relevent to changes in HBASE-27489, they ran smoothly without this PR, thanks.

2005hithlj · 2022-11-30T18:15:31Z

@sunhelly
I apply your patch, and it's OK to run UTs in my local environment. You can change the configuration of hbase.server.useip.enabled to false in TestMasterUseIp/TestRegionServerUseIp to see whether the problem is caused by my PR.

In addition, if hbase.unsafe.regionserver.hostname/hbase.master.hostname is not null, even if hbase.server.useip.enabled is true, useThisHostnameInstead will work. If hbase.unsafe.regionserver.hostname/hbase.master.hostname is null, and hbase.server.useip.enabled is true, the Master and RegionServers info saved in meta and ZK are exposed to the client in the form of IP, which is the purpose of my PR(please see HBASE-27304 for details). This logic seems to be all right.

Apache-HBase · 2023-01-29T05:13:58Z

💔 -1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 9s	Docker mode activated.
		_ Prechecks _
+1 💚	dupname	0m 1s	No case conflicting files found.
+1 💚	hbaseanti	0m 0s	Patch does not have any anti-patterns.
+1 💚	@author	0m 0s	The patch does not contain any @author tags.
		_ master Compile Tests _
+1 💚	mvninstall	3m 33s	master passed
+1 💚	compile	2m 24s	master passed
+1 💚	checkstyle	0m 34s	master passed
+1 💚	spotless	0m 43s	branch has no errors when running spotless:check.
+1 💚	spotbugs	1m 28s	master passed
		_ Patch Compile Tests _
+1 💚	mvninstall	3m 17s	the patch passed
+1 💚	compile	2m 23s	the patch passed
+1 💚	javac	2m 23s	the patch passed
+1 💚	checkstyle	0m 35s	the patch passed
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	hadoopcheck	12m 33s	Patch does not cause any errors with Hadoop 3.2.4 3.3.4.
-1 ❌	spotless	0m 36s	patch has 44 errors when running spotless:check, run spotless:apply to fix.
+1 💚	spotbugs	1m 34s	the patch passed
		_ Other Tests _
+1 💚	asflicense	0m 12s	The patch does not generate ASF License warnings.
		38m 19s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4732/4/artifact/yetus-general-check/output/Dockerfile
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Apache-HBase · 2023-01-29T08:20:43Z

🎊 +1 overall

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		_ Prechecks _
		_ master Compile Tests _
+1 💚	mvninstall	3m 0s	master passed
+1 💚	compile	0m 39s	master passed
+1 💚	shadedjars	4m 14s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 25s	master passed
		_ Patch Compile Tests _
+1 💚	mvninstall	2m 44s	the patch passed
+1 💚	compile	0m 39s	the patch passed
+1 💚	javac	0m 39s	the patch passed
+1 💚	shadedjars	4m 20s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 23s	the patch passed
		_ Other Tests _
+1 💚	unit	203m 45s	hbase-server in the patch passed.
		224m 48s

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GITHUB PR	#4732
Optional Tests	javac javadoc unit shadedjars compile
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Apache-HBase · 2023-01-29T09:08:35Z

🎊 +1 overall

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		_ Prechecks _
		_ master Compile Tests _
+1 💚	mvninstall	5m 21s	master passed
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+1 💚	javadoc	0m 40s	master passed
		_ Patch Compile Tests _
+1 💚	mvninstall	4m 49s	the patch passed
+1 💚	compile	1m 6s	the patch passed
+1 💚	javac	1m 6s	the patch passed
+1 💚	shadedjars	5m 58s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 29s	the patch passed
		_ Other Tests _
+1 💚	unit	241m 25s	hbase-server in the patch passed.
		272m 43s

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GITHUB PR	#4732
Optional Tests	javac javadoc unit shadedjars compile
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Max. process+thread count	2575 (vs. ulimit of 30000)
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Apache-HBase · 2023-01-29T10:00:24Z

🎊 +1 overall

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		_ Prechecks _
+1 💚	dupname	0m 0s	No case conflicting files found.
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+1 💚	@author	0m 0s	The patch does not contain any @author tags.
		_ master Compile Tests _
+1 💚	mvninstall	3m 48s	master passed
+1 💚	compile	2m 30s	master passed
+1 💚	checkstyle	0m 35s	master passed
+1 💚	spotless	0m 45s	branch has no errors when running spotless:check.
+1 💚	spotbugs	1m 36s	master passed
		_ Patch Compile Tests _
+1 💚	mvninstall	3m 30s	the patch passed
+1 💚	compile	2m 27s	the patch passed
+1 💚	javac	2m 27s	the patch passed
+1 💚	checkstyle	0m 33s	the patch passed
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	hadoopcheck	12m 45s	Patch does not cause any errors with Hadoop 3.2.4 3.3.4.
+1 💚	spotless	0m 40s	patch has no errors when running spotless:check.
+1 💚	spotbugs	1m 42s	the patch passed
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+1 💚	asflicense	0m 10s	The patch does not generate ASF License warnings.
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GITHUB PR	#4732
Optional Tests	dupname asflicense javac spotbugs hadoopcheck hbaseanti spotless checkstyle compile
uname	Linux 9f3c8f9ab37e 5.4.0-135-generic #152-Ubuntu SMP Wed Nov 23 20:19:22 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
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sunhelly · 2023-01-29T11:30:49Z

Ping @Apache9 @apurtell , please take a look in your convenience, thanks.

Apache-HBase · 2023-01-29T13:04:23Z

🎊 +1 overall

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		_ Patch Compile Tests _
+1 💚	mvninstall	2m 44s	the patch passed
+1 💚	compile	0m 39s	the patch passed
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GITHUB PR	#4732
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux 0f907f0e7959 5.4.0-137-generic #154-Ubuntu SMP Thu Jan 5 17:03:22 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
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Apache-HBase · 2023-01-29T13:09:59Z

🎊 +1 overall

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+1 💚	mvninstall	3m 34s	master passed
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+1 💚	javadoc	0m 23s	master passed
		_ Patch Compile Tests _
+1 💚	mvninstall	3m 16s	the patch passed
+1 💚	compile	0m 41s	the patch passed
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+1 💚	shadedjars	5m 8s	patch has no errors when building our shaded downstream artifacts.
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sunhelly · 2023-02-16T11:20:35Z

Ping @apurtell @Apache9 , please take a look in your convenience, thanks.

sunhelly · 2023-03-21T02:10:38Z

Ping @Apache9 @apurtell , please take a look. If there are some other concerns, please let me know, thanks.

…pache#4732) Signed-off-by: Andrew Purtell <[email protected]>

…4732) (#5148) Signed-off-by: Andrew Purtell <[email protected]>

sunhelly force-pushed the HBASE-27333 branch from 22e6bb5 to 52632d3 Compare September 2, 2022 10:01

apurtell approved these changes Oct 5, 2022

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sunhelly changed the title ~~HBASE-27333 The condition for using the local hostname is the opposite~~ HBASE-27333 Abort RS when the hostname is different from master seen Oct 10, 2022

sunhelly force-pushed the HBASE-27333 branch from 52632d3 to 1c43ddf Compare October 10, 2022 09:39

apurtell requested changes Oct 10, 2022

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sunhelly force-pushed the HBASE-27333 branch from 1c43ddf to c42e8d3 Compare January 29, 2023 04:26

HBASE-27333 Abort RS when the hostname is different from master seen

674e5f4

sunhelly force-pushed the HBASE-27333 branch from c42e8d3 to 674e5f4 Compare January 29, 2023 09:19

apurtell approved these changes Mar 28, 2023

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sunhelly merged commit f5437b9 into apache:master Mar 28, 2023

sunhelly added a commit to sunhelly/hbase that referenced this pull request Mar 28, 2023

HBASE-27333 Abort RS when the hostname is different from master seen (a…

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…pache#4732) Signed-off-by: Andrew Purtell <[email protected]>

sunhelly mentioned this pull request Mar 28, 2023

Backport 'HBASE-27333 Abort RS when the hostname is different from master seen … #5148

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HBASE-27333 Abort RS when the hostname is different from master seen (#…

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…4732) (#5148) Signed-off-by: Andrew Purtell <[email protected]>

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