GitHub user lianhuiwang opened a pull request:
https://github.com/apache/spark/pull/3061
[SPARK-4195][Core]retry to fetch blocks's result when fetchfailed's reason
is connection timeout
when there are many executors in a application(example:1000),Connection
timeout often occure.
Exception is:
WARN nio.SendingConnection: Error finishing connection
java.net.ConnectException: Connection timed out
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at
org.apache.spark.network.nio.SendingConnection.finishConnect(Connection.scala:342)
at
org.apache.spark.network.nio.ConnectionManager$$anon$11.run(ConnectionManager.scala:273)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
that will make driver as these executors are lost, but in fact these
executors are alive. so add retry mechanism to reduce the probability of the
occurrence of this problem. @rxin
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/lianhuiwang/spark fetchFailed-retry
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/3061.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3061
----
commit dcfef7d755c37f864e2c8fcdc86941553d042f84
Author: lianhuiwang <[email protected]>
Date: 2014-11-01T16:08:37Z
while fetchFailed's reason is connectionException, retry to fetch blocks's
result
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