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 [email protected]

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	3m 27s	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-2.4 Compile Tests _
+1 💚	mvninstall	4m 43s	branch-2.4 passed
+1 💚	compile	0m 34s	branch-2.4 passed
+1 💚	shadedjars	7m 37s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 33s	branch-2.4 passed
		_ Patch Compile Tests _
+1 💚	mvninstall	4m 25s	the patch passed
+1 💚	compile	0m 34s	the patch passed
+1 💚	javac	0m 34s	the patch passed
+1 💚	shadedjars	7m 27s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 30s	the patch passed
		_ Other Tests _
+1 💚	unit	2m 38s	hbase-client in the patch passed.
		34m 2s

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-4012/1/artifact/yetus-jdk11-hadoop3-check/output/Dockerfile
GITHUB PR	#4012
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux ed417749e988 4.15.0-65-generic #74-Ubuntu SMP Tue Sep 17 17:06:04 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	branch-2.4 / 53f8240
Default Java	AdoptOpenJDK-11.0.10+9
Test Results	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-4012/1/testReport/
Max. process+thread count	305 (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-4012/1/console
versions	git=2.17.1 maven=3.6.3
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[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	9m 13s	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-2.4 Compile Tests _
+1 💚	mvninstall	4m 1s	branch-2.4 passed
+1 💚	compile	0m 27s	branch-2.4 passed
+1 💚	shadedjars	6m 35s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 25s	branch-2.4 passed
		_ Patch Compile Tests _
+1 💚	mvninstall	3m 41s	the patch passed
+1 💚	compile	0m 27s	the patch passed
+1 💚	javac	0m 27s	the patch passed
+1 💚	shadedjars	6m 35s	patch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 23s	the patch passed
		_ Other Tests _
+1 💚	unit	2m 37s	hbase-client in the patch passed.
		35m 50s

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-4012/1/artifact/yetus-jdk8-hadoop2-check/output/Dockerfile
GITHUB PR	#4012
Optional Tests	javac javadoc unit shadedjars compile
uname	Linux c021afafb398 4.15.0-162-generic #170-Ubuntu SMP Mon Oct 18 11:38:05 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	branch-2.4 / 53f8240
Default Java	AdoptOpenJDK-1.8.0_282-b08
Test Results	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-4012/1/testReport/
Max. process+thread count	232 (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-4012/1/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 34s	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-2.4 Compile Tests _
+1 💚	mvninstall	3m 48s	branch-2.4 passed
+1 💚	compile	1m 4s	branch-2.4 passed
+1 💚	checkstyle	0m 33s	branch-2.4 passed
+1 💚	spotbugs	1m 12s	branch-2.4 passed
		_ Patch Compile Tests _
+1 💚	mvninstall	3m 25s	the patch passed
+1 💚	compile	1m 6s	the patch passed
+1 💚	javac	1m 6s	the patch passed
+1 💚	checkstyle	0m 36s	the patch passed
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	hadoopcheck	18m 15s	Patch does not cause any errors with Hadoop 2.10.0 or 3.1.2 3.2.1.
+1 💚	spotbugs	1m 20s	the patch passed
		_ Other Tests _
+1 💚	asflicense	0m 15s	The patch does not generate ASF License warnings.
		40m 32s

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-4012/1/artifact/yetus-general-check/output/Dockerfile
GITHUB PR	#4012
Optional Tests	dupname asflicense javac spotbugs hadoopcheck hbaseanti checkstyle compile
uname	Linux 35c1043f111f 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 11:12:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	branch-2.4 / 53f8240
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-4012/1/console
versions	git=2.17.1 maven=3.6.3 spotbugs=4.2.2
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