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https://issues.apache.org/jira/browse/HBASE-29160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17932895#comment-17932895
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Hudson commented on HBASE-29160:
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Results for branch branch-2
[build #1242 on
builds.a.o|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2/1242/]:
(x) *{color:red}-1 overall{color}*
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details (if available):
(/) {color:green}+1 general checks{color}
-- For more information [see general
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2/1242/General_20Nightly_20Build_20Report/]
(/) {color:green}+1 jdk8 hadoop2 checks{color}
-- For more information [see jdk8 (hadoop2)
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2/1242/JDK8_20Nightly_20Build_20Report_20_28Hadoop2_29/]
(x) {color:red}-1 jdk8 hadoop3 checks{color}
-- For more information [see jdk8 (hadoop3)
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2/1242/JDK8_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 jdk11 hadoop3 checks{color}
-- For more information [see jdk11
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2/1242/JDK11_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 jdk17 hadoop3 checks{color}
-- For more information [see jdk17
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2/1242/JDK17_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 jdk17 hadoop ${HADOOP_THREE_VERSION} backward compatibility
checks{color}
-- For more information [see jdk17
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2/1242/JDK17_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(x) {color:red}-1 jdk17 hadoop ${HADOOP_THREE_VERSION} backward compatibility
checks{color}
-- For more information [see jdk17
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2/1242/JDK17_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 jdk17 hadoop ${HADOOP_THREE_VERSION} backward compatibility
checks{color}
-- For more information [see jdk17
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2/1242/JDK17_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 source release artifact{color}
-- See build output for details.
(/) {color:green}+1 client integration test for HBase 2 {color}
(/) {color:green}+1 client integration test for 3.3.5 {color}
(/) {color:green}+1 client integration test for 3.3.6 {color}
(/) {color:green}+1 client integration test for 3.4.0 {color}
(/) {color:green}+1 client integration test for 3.4.1 {color}
> Cache result of getRegionNameAsString()
> ---------------------------------------
>
> Key: HBASE-29160
> URL: https://issues.apache.org/jira/browse/HBASE-29160
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 3.0.0-beta-1, 4.0.0-alpha-1, 2.7.0, 2.5.11, 2.6.2
> Reporter: Charles Connell
> Assignee: Charles Connell
> Priority: Minor
> Labels: pull-request-available
> Fix For: 4.0.0-alpha-1
>
> Attachments: slow-region-name-1.html, slow-region-name-2.html,
> slow-region-name-3.html
>
>
> I've noticed that tracing can add meaningful CPU cycles to each HBase query.
> This is easy to correct, it turns out. Creating a tracing span is slow
> because region names are attached to the spans, and calls to
> {{RegionInfo#getRegionNameAsString()}} are expensive. This method
> re-generates the region name string on each call, which is not necessary. In
> this ticket I'll make it cache this string.
> See the attached CPU-time profiles where {{getRegionNameAsString()}} occupies
> 0.5% - 2%.
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