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Cassandra error occurs when running a 20M Campaign



User is running a Campaign and it is failing.

A Campaign fails when it is run. The DataFlow run fails while reading from the Cassandra dataset.

Error Messages

com.pega.dsm.dnode.api.dataflow.StageException: Exception in stage: FCA at com.pega.dsm.dnode.api.dataflow.StageException.create( at com.pega.dsm.dnode.api.dataflow.DataFlowStage$StageOutputSubscriber.onError( at com.pega.dsm.dnode.api.dataflow.DataFlowStage$StageInputSubscriber.onError( at j com.pega.dsm.dnode.util.PrpcRunnable.execute( at com.pega.dsm.dnode.impl.prpc.PrpcThreadFactory$ Caused by: com.datastax.driver.core.exceptions.OperationTimedOutException: Timed out waiting for server response at com.datastax.driver.core.exceptions.OperationTimedOutException.copy( at com.datastax.driver.core.exceptions.OperationTimedOutException.copy( at com.datastax.driver.core.DriverThrowables.propagateCause( at com.datastax.driver.core.DefaultResultSetFuture.getUninterruptibly( at com.datastax.driver.core.AbstractSession.execute( at com.pega.dsm.dnode.impl.dataset.cassandra.SessionProxy.execute( at com.pega.dsm.dnode.impl.dataset.cassandra.CassandraBrowseByPartitionOperation$2.emit( at com.pega.dsm.dnode.impl.dataset.cassandra.CassandraDataEmitter.emit( at$SafeDataSubscriber.subscribe( ... 18 more Caused by: com.datastax.driver.core.exceptions.OperationTimedOutException: Timed out waiting for server response at com.datastax.driver.core.RequestHandler$SpeculativeExecution.onTimeout( at com.datastax.driver.core.Connection$ResponseHandler$ at io.netty.util.HashedWheelTimer$HashedWheelTimeout.expire( at io.netty.util.HashedWheelTimer$HashedWheelBucket.expireTimeouts( at io.netty.util.HashedWheelTimer$ 

Steps to Reproduce

Run a 20M Campaign.

Root Cause

A defect in Pegasystems’ code or rules.


Apply HFix-51140.

Published April 9, 2019 - Updated October 8, 2020

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