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https://issues.apache.org/jira/browse/HBASE-26590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17470697#comment-17470697
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Hudson commented on HBASE-26590:
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Results for branch branch-2.5
[build #21 on
builds.a.o|https://ci-hadoop.apache.org/job/HBase/job/HBase%20Nightly/job/branch-2.5/21/]:
(/) *{color:green}+1 overall{color}*
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details (if available):
(/) {color:green}+1 general checks{color}
-- For more information [see general
report|https://ci-hadoop.apache.org/job/HBase/job/HBase%20Nightly/job/branch-2.5/21/General_20Nightly_20Build_20Report/]
(/) {color:green}+1 jdk8 hadoop2 checks{color}
-- For more information [see jdk8 (hadoop2)
report|https://ci-hadoop.apache.org/job/HBase/job/HBase%20Nightly/job/branch-2.5/21/JDK8_20Nightly_20Build_20Report_20_28Hadoop2_29/]
(/) {color:green}+1 jdk8 hadoop3 checks{color}
-- For more information [see jdk8 (hadoop3)
report|https://ci-hadoop.apache.org/job/HBase/job/HBase%20Nightly/job/branch-2.5/21/JDK8_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 jdk11 hadoop3 checks{color}
-- For more information [see jdk11
report|https://ci-hadoop.apache.org/job/HBase/job/HBase%20Nightly/job/branch-2.5/21/JDK11_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 source release artifact{color}
-- See build output for details.
(/) {color:green}+1 client integration test{color}
> Hbase-client Meta lookup performance regression between hbase-1 and hbase-2
> ---------------------------------------------------------------------------
>
> Key: HBASE-26590
> URL: https://issues.apache.org/jira/browse/HBASE-26590
> Project: HBase
> Issue Type: Improvement
> Components: meta
> Affects Versions: 2.4.0, 2.5.0, 2.3.7, 2.6.0
> Reporter: Huaxiang Sun
> Assignee: Huaxiang Sun
> Priority: Major
> Fix For: 2.5.0, 2.4.10
>
>
> One of our users complained higher latency after application upgrades from
> hbase-1.2 client (CDH-5.16.2) to hbase-2.4.5 client with meta replica Load
> Balance mode during app restart. I reproduced the regression by a test for
> meta lookup.
> At my test cluster, there are 160k regions for the test table, so there are
> 160k entries in meta region. Used one thread to do 1 million meta lookup
> against the meta region server.
>
> ||Version ||Meta Replica Load Balance Enabled||Time ||
> ||2.4.5-with-fixed||Yes||336458ms||
> ||2.4.5-with-fixed||No||333253ms||
> ||2.4.5||Yes||469980ms||
> ||2.4.5||No||470515ms||
> | *cdh-5.16.2*| *No* | *323412ms*|
>
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