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Type:
Improvement
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Status: Closed
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Priority:
Major
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Resolution: Duplicate
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Affects Version/s: None
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Fix Version/s: None
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Component/s: Spark Core
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Labels:None
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.
- duplicates
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SPARK-4188 Shuffle fetches should be retried at a lower level
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- Resolved
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- links to