[rules-users] Facing Problem with this exception

[Wolfgang Laun]

Could be a bug that has been fixed in some later version - can someone
confirm this please?

OP is using drools 5.1.1, and should try 5.6.

-W

On 05/03/2014, Mallikarjun Kohalli (mkohalli) <mkohalli at cisco.com> wrote:
> Hi All,
> We are getting the following exceptions when drools is executing some
> rules.
>
> Exception:
>
> Caused by: java.lang.NullPointerException
>         at
> org.drools.core.util.LeftTupleIndexHashTable.remove(LeftTupleIndexHashTable.java:251)
>         at org.drools.reteoo.NotNode.retractLeftTuple(NotNode.java:226)
>         at
> org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateRetractLeftTuple(SingleLeftTupleSinkAdapter.java:217)
>         at
> org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateRetractRightTuple(SingleLeftTupleSinkAdapter.java:124)
>         at org.drools.reteoo.JoinNode.retractRightTuple(JoinNode.java:151)
>         at
> org.drools.reteoo.ObjectTypeNode.retractObject(ObjectTypeNode.java:232)
>         at
> org.drools.reteoo.ReteooWorkingMemory$WorkingMemoryReteExpireAction.execute(ReteooWorkingMemory.java:412)
>         at
> org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1471)
>         ... 51 more
>
>
>
> Regards,
> Mallikarjun K
>