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https://issues.apache.org/jira/browse/HADOOP-9503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13641214#comment-13641214
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Varun Sharma commented on HADOOP-9503:
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[~szetszwo]
Hi Nicholas,
This configures things when you have IOException but for SocketTimeout(s) we
had a hard coded 1s sleep with a hard coded 20second connect timeout and hard
coded 45 retries. Both were fixed but still there is a constant sleep of 1
second b/w retries for socket timeout errors (which you can get when a host
black holed - like firewalled to simulate network disasters).
> Allow a configurable sleep between IPC client connect timeouts
> --------------------------------------------------------------
>
> Key: HADOOP-9503
> URL: https://issues.apache.org/jira/browse/HADOOP-9503
> Project: Hadoop Common
> Issue Type: Improvement
> Components: ipc
> Reporter: Varun Sharma
> Priority: Minor
>
> HADOOP 9106 introduced a configurable retry timeout when there are socket
> timeouts errors.
> Since the IPC client is used by a wide variety of applications including
> realtime/online ones (like hbase + hdfs), we sometimes need fast fail
> timeouts which are < 3 seconds. Achieving such a timeout for connect is very
> difficult with a 1 second sleep in b/w retries. It would be good to have a
> configurable parameter to reduce this sleep.
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