What is the purpose of RightTupleIndexHashTable?
We are getting the exception below but unable to come up with a self contained
unit test to demonstrate the problem.
Caused by: java.lang.NullPointerException: null
at
org.drools.core.util.index.RightTupleIndexHashTable.removeAdd(RightTupleIndexHashTable.java:344)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at org.drools.reteoo.JoinNode.modifyRightTuple(JoinNode.java:224)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at
org.drools.reteoo.PropagationQueuingNode$ModifyToSinkAction.execute(PropagationQueuingNode.java:513)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at
org.drools.reteoo.PropagationQueuingNode.propagateActions(PropagationQueuingNode.java:280)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at
org.drools.reteoo.PropagationQueuingNode$PropagateAction.execute(PropagationQueuingNode.java:588)
~[drools-core-5.5.0.Final.jar:5.5.0.Final]
at
org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:993)
[drools-core-5.5.0.Final.jar:5.5.0.Final]
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