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https://issues.apache.org/jira/browse/HADOOP-12957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15252877#comment-15252877
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Tsz Wo Nicholas Sze commented on HADOOP-12957:
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Thanks for the patch. We could simply use
[Semaphore|http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/Semaphore.html]
instead of adding a new class RateLimiter.
Please also add some tests.
> Limit the number of outstanding async calls
> -------------------------------------------
>
> Key: HADOOP-12957
> URL: https://issues.apache.org/jira/browse/HADOOP-12957
> Project: Hadoop Common
> Issue Type: Improvement
> Components: ipc
> Reporter: Xiaobing Zhou
> Assignee: Xiaobing Zhou
> Attachments: HADOOP-12957-HADOOP-12909.000.patch,
> HADOOP-12957-combo.000.patch
>
>
> In async RPC, if the callers don't read replies fast enough, the buffer
> storing replies could be used up. This is to propose limiting the number of
> outstanding async calls to eliminate the issue.
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