HBASE-26944 Possible resource leak while creating new region scanner by pankaj72981 · Pull Request #4339 · apache/hbase

pankaj72981 · 2022-04-12T04:15:20Z

Scanner should be closed to avoid leak in case any exception thrown from RegionObserver#postScannerOpen

Apache-HBase · 2022-04-12T04:55:06Z

🎊 +1 overall

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Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4339/1/artifact/yetus-general-check/output/Dockerfile
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Apache9 · 2022-04-12T07:36:09Z

I'm neutral on this change. CP is designed for advanced user, so the users should know the risk of throwing exception out.

Do you face any real problems in production?

Apache-HBase · 2022-04-12T07:49:38Z

🎊 +1 overall

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		204m 21s

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pankaj72981 · 2022-04-12T07:56:21Z

I'm neutral on this change. CP is designed for advanced user, so the users should know the risk of throwing exception out.
Do you face any real problems in production?

Agree Duo, but here we have a chance to close the scanner in case some unusual happen at CP side. Yeah recently we met this problem in our production env, there were 7000+ unclosed scanners.

Apache-HBase · 2022-04-12T08:12:41Z

💔 -1 overall

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		227m 29s

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Apache9

Better add a comment here to mention that ‘although CP is for advanced users and they should take care of the implementation to not damage the HBase system, closing the scanner on exception here does not have any bad side effect so let's do it‘. Something like this.

pankaj72981 · 2022-04-12T10:55:13Z

Better add a comment here to mention that ‘although CP is for advanced users and they should take care of the implementation to not damage the HBase system, closing the scanner on exception here does not have any bad side effect so let's do it‘. Something like this.

Make sense, thanks Duo for the suggestion. Will push the changes.

Apache-HBase · 2022-04-12T12:11:42Z

🎊 +1 overall

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		31m 16s

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Apache-HBase · 2022-04-12T15:03:33Z

🎊 +1 overall

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		203m 17s

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Apache-HBase · 2022-04-12T15:34:06Z

💔 -1 overall

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		233m 46s

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pankaj72981 · 2022-04-13T15:47:15Z

Not sure, why some checks are not yet completed. Any idea Duo?

Apache9 · 2022-04-13T15:48:00Z

Let me kick another build.

pankaj72981 · 2022-04-13T15:54:38Z

Thanks Duo...!!

Apache-HBase · 2022-04-13T16:18:47Z

🎊 +1 overall

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Apache-HBase · 2022-04-13T20:39:00Z

💔 -1 overall

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Apache-HBase · 2022-04-13T21:42:23Z

💔 -1 overall

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		353m 24s

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Apache-HBase · 2022-04-14T09:50:34Z

🎊 +1 overall

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+1 💚	asflicense	0m 8s	The patch does not generate ASF License warnings.
		29m 48s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4339/4/artifact/yetus-general-check/output/Dockerfile
GITHUB PR	#4339
Optional Tests	dupname asflicense javac spotbugs hadoopcheck hbaseanti checkstyle compile
uname	Linux d5ac007c98cf 5.4.0-1071-aws #76~18.04.1-Ubuntu SMP Mon Mar 28 17:49:57 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / `f990f56`
Default Java	AdoptOpenJDK-1.8.0_282-b08
Max. process+thread count	65 (vs. ulimit of 30000)
modules	C: hbase-server U: hbase-server
Console output	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4339/4/console
versions	git=2.17.1 maven=3.6.3 spotbugs=4.2.2
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Apache-HBase · 2022-04-14T12:46:41Z

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	3m 32s	Docker mode activated.
-0 ⚠️	yetus	0m 3s	Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
		_ Prechecks _
		_ master Compile Tests _
+1 💚	mvninstall	2m 33s	master passed
+1 💚	compile	0m 34s	master passed
+1 💚	shadedjars	3m 52s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 21s	master passed
		_ Patch Compile Tests _
+1 💚	mvninstall	2m 6s	the patch passed
+1 💚	compile	0m 34s	the patch passed
+1 💚	javac	0m 34s	the patch passed
+1 💚	shadedjars	3m 53s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 21s	the patch passed
		_ Other Tests _
+1 💚	unit	185m 37s	hbase-server in the patch passed.
		205m 52s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4339/4/artifact/yetus-jdk8-hadoop3-check/output/Dockerfile
GITHUB PR	#4339
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux 62f9d03d610d 5.4.0-1043-aws #45~18.04.1-Ubuntu SMP Fri Apr 9 23:32:25 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / `f990f56`
Default Java	AdoptOpenJDK-1.8.0_282-b08
Test Results	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4339/4/testReport/
Max. process+thread count	3319 (vs. ulimit of 30000)
modules	C: hbase-server U: hbase-server
Console output	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4339/4/console
versions	git=2.17.1 maven=3.6.3
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Apache-HBase · 2022-04-14T14:25:20Z

💔 -1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 39s	Docker mode activated.
-0 ⚠️	yetus	0m 5s	Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
		_ Prechecks _
		_ master Compile Tests _
+1 💚	mvninstall	6m 27s	master passed
+1 💚	compile	1m 58s	master passed
+1 💚	shadedjars	8m 19s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	1m 1s	master passed
		_ Patch Compile Tests _
+1 💚	mvninstall	6m 16s	the patch passed
+1 💚	compile	2m 1s	the patch passed
+1 💚	javac	2m 1s	the patch passed
+1 💚	shadedjars	6m 14s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 39s	the patch passed
		_ Other Tests _
-1 ❌	unit	267m 25s	hbase-server in the patch failed.
		304m 9s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4339/4/artifact/yetus-jdk11-hadoop3-check/output/Dockerfile
GITHUB PR	#4339
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux 30724883e915 5.4.0-90-generic #101-Ubuntu SMP Fri Oct 15 20:00:55 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / `f990f56`
Default Java	AdoptOpenJDK-11.0.10+9
unit	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4339/4/artifact/yetus-jdk11-hadoop3-check/output/patch-unit-hbase-server.txt
Test Results	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4339/4/testReport/
Max. process+thread count	2488 (vs. ulimit of 30000)
modules	C: hbase-server U: hbase-server
Console output	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4339/4/console
versions	git=2.17.1 maven=3.6.3
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pankaj72981 · 2022-04-15T06:03:14Z

UT failures are not relevant.

…4339) * HBASE-26944 Possible resource leak while creating new region scanner Signed-off-by: Duo Zhang <zhangduo@apache.org> (cherry picked from commit 62e3efc)

…pache#4339) * HBASE-26944 Possible resource leak while creating new region scanner Signed-off-by: Duo Zhang <zhangduo@apache.org> (cherry picked from commit 62e3efc) (cherry picked from commit eea9e78) Change-Id: I2940cb2c2d9ff39f2e0c79a553f0d75f8cbbb896

HBASE-26944 Possible resource leak while creating new region scanner
4a48a16

pankaj72981 requested a review from Apache9 April 12, 2022 04:15

Apache9 approved these changes Apr 12, 2022
View reviewed changes

HBASE-26944 Possible resource leak while creating new region scanner
9ea8fdf

pankaj72981 merged commit 62e3efc into apache:masterApr 15, 2022

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