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https://issues.apache.org/jira/browse/HBASE-18027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16030657#comment-16030657
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Hudson commented on HBASE-18027:
--------------------------------

SUCCESS: Integrated in Jenkins build HBase-Trunk_matrix #3107 (See 
[https://builds.apache.org/job/HBase-Trunk_matrix/3107/])
HBASE-18027 HBaseInterClusterReplicationEndpoint should respect RPC (apurtell: 
rev d547feac6b673d59703e1a0ef46db38b26046e4c)
* (edit) 
hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/HBaseInterClusterReplicationEndpoint.java
* (edit) 
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALEdit.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WALKey.java
* (add) 
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestReplicator.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcServer.java


> Replication should respect RPC size limits when batching edits
> --------------------------------------------------------------
>
>                 Key: HBASE-18027
>                 URL: https://issues.apache.org/jira/browse/HBASE-18027
>             Project: HBase
>          Issue Type: Bug
>          Components: Replication
>    Affects Versions: 2.0.0, 1.4.0, 1.3.1
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>             Fix For: 2.0.0, 1.4.0
>
>         Attachments: HBASE-18027-branch-1.patch, HBASE-18027-branch-1.patch, 
> HBASE-18027-branch-1.patch, HBASE-18027-branch-1.patch, HBASE-18027.patch, 
> HBASE-18027.patch, HBASE-18027.patch, HBASE-18027.patch, HBASE-18027.patch, 
> HBASE-18027.patch, HBASE-18027.patch, HBASE-18027.patch
>
>
> In HBaseInterClusterReplicationEndpoint#replicate we try to replicate in 
> batches. We create N lists. N is the minimum of configured replicator 
> threads, number of 100-waledit batches, or number of current sinks. Every 
> pending entry in the replication context is then placed in order by hash of 
> encoded region name into one of these N lists. Each of the N lists is then 
> sent all at once in one replication RPC. We do not test if the sum of data in 
> each N list will exceed RPC size limits. This code presumes each individual 
> edit is reasonably small. Not checking for aggregate size while assembling 
> the lists into RPCs is an oversight and can lead to replication failure when 
> that assumption is violated.
> We can fix this by generating as many replication RPC calls as we need to 
> drain a list, keeping each RPC under limit, instead of assuming the whole 
> list will fit in one.



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