HBASE-26590 Hbase-client Meta lookup performance regression between h…

[huaxiangsun]

…base-1 and hbase-2 (#4008)

Change scan caching back to 1 to avoid extra work at Region Server side. For most cases, the extra 4 results
fetched are wasted at the client side.

Signed-off-by: Duo Zhang zhangduo@apache.org

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	2m 28s	Docker mode activated.
-0 ⚠️	yetus	0m 7s	Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
		_ Prechecks _
		_ branch-2.3 Compile Tests _
+1 💚	mvninstall	4m 52s	branch-2.3 passed
+1 💚	compile	0m 35s	branch-2.3 passed
+1 💚	shadedjars	6m 38s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 32s	branch-2.3 passed
		_ Patch Compile Tests _
+1 💚	mvninstall	4m 29s	the patch passed
+1 💚	compile	0m 31s	the patch passed
+1 💚	javac	0m 31s	the patch passed
+1 💚	shadedjars	6m 20s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 30s	the patch passed
		_ Other Tests _
+1 💚	unit	2m 49s	hbase-client in the patch passed.
		31m 23s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-4013/1/artifact/yetus-jdk8-hadoop2-check/output/Dockerfile
GITHUB PR	#4013
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux 5c777b30970c 4.15.0-163-generic #171-Ubuntu SMP Fri Nov 5 11:55:11 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	branch-2.3 / dc1f546
Default Java	AdoptOpenJDK-1.8.0_282-b08
Test Results	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-4013/1/testReport/
Max. process+thread count	223 (vs. ulimit of 12500)
modules	C: hbase-client U: hbase-client
Console output	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-4013/1/console
versions	git=2.17.1 maven=3.6.3
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[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	1m 48s	Docker mode activated.
-0 ⚠️	yetus	0m 8s	Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
		_ Prechecks _
		_ branch-2.3 Compile Tests _
+1 💚	mvninstall	5m 48s	branch-2.3 passed
+1 💚	compile	0m 43s	branch-2.3 passed
+1 💚	shadedjars	8m 10s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 37s	branch-2.3 passed
		_ Patch Compile Tests _
+1 💚	mvninstall	5m 44s	the patch passed
+1 💚	compile	0m 41s	the patch passed
+1 💚	javac	0m 41s	the patch passed
+1 💚	shadedjars	8m 2s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 32s	the patch passed
		_ Other Tests _
+1 💚	unit	2m 54s	hbase-client in the patch passed.
		36m 35s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-4013/1/artifact/yetus-jdk11-hadoop3-check/output/Dockerfile
GITHUB PR	#4013
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux b3e371fd4018 4.15.0-153-generic #160-Ubuntu SMP Thu Jul 29 06:54:29 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	branch-2.3 / dc1f546
Default Java	AdoptOpenJDK-11.0.10+9
Test Results	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-4013/1/testReport/
Max. process+thread count	206 (vs. ulimit of 12500)
modules	C: hbase-client U: hbase-client
Console output	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-4013/1/console
versions	git=2.17.1 maven=3.6.3
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[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	0m 47s	Docker mode activated.
		_ Prechecks _
+1 💚	dupname	0m 0s	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.
		_ branch-2.3 Compile Tests _
+1 💚	mvninstall	4m 21s	branch-2.3 passed
+1 💚	compile	1m 12s	branch-2.3 passed
+1 💚	checkstyle	0m 45s	branch-2.3 passed
+1 💚	spotbugs	1m 38s	branch-2.3 passed
		_ Patch Compile Tests _
+1 💚	mvninstall	3m 58s	the patch passed
+1 💚	compile	1m 3s	the patch passed
+1 💚	javac	1m 3s	the patch passed
+1 💚	checkstyle	0m 31s	the patch passed
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	hadoopcheck	17m 14s	Patch does not cause any errors with Hadoop 2.10.0 or 3.1.2 3.2.1.
+1 💚	spotbugs	1m 17s	the patch passed
		_ Other Tests _
+1 💚	asflicense	0m 14s	The patch does not generate ASF License warnings.
		40m 58s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-4013/1/artifact/yetus-general-check/output/Dockerfile
GITHUB PR	#4013
Optional Tests	dupname asflicense javac spotbugs hadoopcheck hbaseanti checkstyle compile
uname	Linux d78c9fe6e1b1 4.15.0-112-generic #113-Ubuntu SMP Thu Jul 9 23:41:39 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	branch-2.3 / dc1f546
Default Java	AdoptOpenJDK-1.8.0_282-b08
Max. process+thread count	96 (vs. ulimit of 12500)
modules	C: hbase-client U: hbase-client
Console output	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-4013/1/console
versions	git=2.17.1 maven=3.6.3 spotbugs=4.2.2
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