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From "Brahma Reddy Battula (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12916) Allow RPC scheduler/callqueue backoff using response times
Date Sat, 02 Apr 2016 17:49:25 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12916?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15222976#comment-15222976

Brahma Reddy Battula commented on HADOOP-12916:

After this Jira in following test is failing in Trunk. Raised HDFS-10253 to track this.. *Since
this testcase failure from HDFS project,jenkins did not catch here* 

 Error Details 
org.apache.hadoop.TestRefreshCallQueue$MockCallQueue could not be constructed.

 Stack Trace 
java.lang.RuntimeException: org.apache.hadoop.TestRefreshCallQueue$MockCallQueue could not
be constructed.
	at org.apache.hadoop.ipc.CallQueueManager.createCallQueueInstance(CallQueueManager.java:164)
	at org.apache.hadoop.ipc.CallQueueManager.<init>(CallQueueManager.java:70)
	at org.apache.hadoop.ipc.Server.<init>(Server.java:2579)
	at org.apache.hadoop.ipc.RPC$Server.<init>(RPC.java:958)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server.<init>(ProtobufRpcEngine.java:535)
	at org.apache.hadoop.ipc.ProtobufRpcEngine.getServer(ProtobufRpcEngine.java:510)


> Allow RPC scheduler/callqueue backoff using response times
> ----------------------------------------------------------
>                 Key: HADOOP-12916
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12916
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: ipc
>            Reporter: Xiaoyu Yao
>            Assignee: Xiaoyu Yao
>             Fix For: 2.8.0
>         Attachments: HADOOP-12916.00.patch, HADOOP-12916.01.patch, HADOOP-12916.02.patch,
HADOOP-12916.03.patch, HADOOP-12916.04.patch, HADOOP-12916.05.patch, HADOOP-12916.06.patch,
HADOOP-12916.07.patch, HADOOP-12916.08.patch
> Currently back off policy from HADOOP-10597 is hard coded to base on whether call queue
is full. This ticket is open to allow flexible back off policies such as moving average of
response time in RPC calls of different priorities. 

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