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https://issues.apache.org/jira/browse/HBASE-24578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17157823#comment-17157823
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Hudson commented on HBASE-24578:
--------------------------------
Results for branch branch-2
[build #2744 on
builds.a.o|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2744/]:
(/) *{color:green}+1 overall{color}*
----
details (if available):
(/) {color:green}+1 general checks{color}
-- For more information [see general
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2744/General_20Nightly_20Build_20Report/]
(/) {color:green}+1 jdk8 hadoop2 checks{color}
-- For more information [see jdk8 (hadoop2)
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2744/JDK8_20Nightly_20Build_20Report_20_28Hadoop2_29/]
(/) {color:green}+1 jdk8 hadoop3 checks{color}
-- For more information [see jdk8 (hadoop3)
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2744/JDK8_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 jdk11 hadoop3 checks{color}
-- For more information [see jdk11
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2744/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}
> [WAL] Add a parameter to config RingBufferEventHandler's SyncFuture count
> -------------------------------------------------------------------------
>
> Key: HBASE-24578
> URL: https://issues.apache.org/jira/browse/HBASE-24578
> Project: HBase
> Issue Type: Improvement
> Components: wal
> Affects Versions: 1.4.13, 2.2.5
> Reporter: Reid Chan
> Assignee: wenfeiyi666
> Priority: Major
> Fix For: 3.0.0-alpha-1, 2.3.1, 2.2.6
>
>
> The current value of RingBufferEventHandler's handler is the value of
> {{hbase.regionserver.handler.count}}, which works good in default wal
> provider --- one WAL per regionserver.
> When trying to use WAL group provider, either by group or wal per region, the
> default value is bad. If rs has 100 regions and wal per region strategy is
> used, then rs will allocate 100 *
> SyncFuture[$hbase.regionserver.handler.count] array
> {code}
> int maxHandlersCount = conf.getInt(HConstants.REGION_SERVER_HANDLER_COUNT,
> 200);
> this.ringBufferEventHandler = new RingBufferEventHandler(
> conf.getInt("hbase.regionserver.hlog.syncer.count", 5),
> maxHandlersCount);
> ...
> ----
> RingBufferEventHandler(final int syncRunnerCount, final int maxHandlersCount)
> {
> this.syncFutures = new SyncFuture[maxHandlersCount];
> ...
> }
> {code}
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