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https://issues.apache.org/jira/browse/HADOOP-10597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14510856#comment-14510856
]
Hudson commented on HADOOP-10597:
---------------------------------
FAILURE: Integrated in Hadoop-Hdfs-trunk #2105 (See
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/2105/])
HADOOP-10597. RPC Server signals backoff to clients when all request queues are
full. (Contributed by Ming Ma) (arp: rev
49f6e3d35e0f89637ae9ea970f249c13bdc0fd49)
*
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/CallQueueManager.java
*
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeys.java
*
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestCallQueueManager.java
*
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/metrics/RpcMetrics.java
*
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java
* hadoop-common-project/hadoop-common/CHANGES.txt
*
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestRPC.java
> RPC Server signals backoff to clients when all request queues are full
> ----------------------------------------------------------------------
>
> Key: HADOOP-10597
> URL: https://issues.apache.org/jira/browse/HADOOP-10597
> Project: Hadoop Common
> Issue Type: Sub-task
> Reporter: Ming Ma
> Assignee: Ming Ma
> Fix For: 2.8.0
>
> Attachments: HADOOP-10597-2.patch, HADOOP-10597-3.patch,
> HADOOP-10597-4.patch, HADOOP-10597-5.patch, HADOOP-10597-6.patch,
> HADOOP-10597.patch, MoreRPCClientBackoffEvaluation.pdf,
> RPCClientBackoffDesignAndEvaluation.pdf
>
>
> Currently if an application hits NN too hard, RPC requests be in blocking
> state, assuming OS connection doesn't run out. Alternatively RPC or NN can
> throw some well defined exception back to the client based on certain
> policies when it is under heavy load; client will understand such exception
> and do exponential back off, as another implementation of
> RetryInvocationHandler.
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