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From Behroz Sikander <>
Subject [Worker Crashing] OutOfMemoryError: GC overhead limit execeeded
Date Thu, 23 Mar 2017 10:46:28 GMT
Spark version: 1.6.2
Hadoop: 2.6.0

All VMS are deployed on AWS.
1 Master (t2.large)
1 Secondary Master (t2.large)
5 Workers (m4.xlarge)
Zookeeper (t2.large)

Recently, 2 of our workers went down with out of memory exception.

> java.lang.OutOfMemoryError: GC overhead limit exceeded (max heap: 1024 MB)

Both of these worker processes were in hanged state. We restarted them to
bring them back to normal state.

Here is the complete exception

Master's spark-default.conf file:


Slave's spark-default.conf file:

So, what could be the reason of our workers crashing due to OutOfMemory ?
How can we avoid that in future.


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