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https://issues.apache.org/jira/browse/HBASE-20417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16440880#comment-16440880
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Hudson commented on HBASE-20417:
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Results for branch master
[build #302 on
builds.a.o|https://builds.apache.org/job/HBase%20Nightly/job/master/302/]: (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://builds.apache.org/job/HBase%20Nightly/job/master/302//General_Nightly_Build_Report/]
(x) {color:red}-1 jdk8 hadoop2 checks{color}
-- For more information [see jdk8 (hadoop2)
report|https://builds.apache.org/job/HBase%20Nightly/job/master/302//JDK8_Nightly_Build_Report_(Hadoop2)/]
(x) {color:red}-1 jdk8 hadoop3 checks{color}
-- For more information [see jdk8 (hadoop3)
report|https://builds.apache.org/job/HBase%20Nightly/job/master/302//JDK8_Nightly_Build_Report_(Hadoop3)/]
(/) {color:green}+1 source release artifact{color}
-- See build output for details.
> Do not read wal entries when peer is disabled
> ---------------------------------------------
>
> Key: HBASE-20417
> URL: https://issues.apache.org/jira/browse/HBASE-20417
> Project: HBase
> Issue Type: Sub-task
> Components: Replication
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Major
> Fix For: 3.0.0, 2.1.0
>
> Attachments: HBASE-20417-v1.patch, HBASE-20417.patch
>
>
> Now, the disabled check is in ReplicationSourceShipper. If peer is disabled,
> then we will not take entry batch from ReplicationSourceWALReader. But
> ReplicationSourceWALReader will keep reading wal entries until the buffer is
> full.
> For serial replication, the canPush check is in ReplicationSourceWALReader,
> so even when we disabled the peer during the modification for a serial peer,
> we could still run into the SerialReplicationChecker. Theoretically there
> will be no problem, since in the procedure we will only update last pushed
> sequence ids to a greater value. If canPush is true then a greater value does
> not make any difference, if canPush is false then we are still safe since the
> ReplicationSourceWALReader will be blocked.
> But this still makes me a little nervous, and also, it does not make sense to
> still read wal entries when the peer is disabled. So let's change the
> behavior.
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