[rules-users] NullPointerException with LeftTupleIndexHashTable.remove()

Mark Proctor mproctor at codehaus.org
Mon Feb 24 23:54:50 EST 2014 

I’ve confirmed, and written a reduced test. Please monitor the new thread on drools-dev. Also don’t forget to make a JIRA.

Mark
On 24 Feb 2014, at 23:56, nxv <nxvanderlinden at gmail.com> wrote:

> Hello,
> 
> any news ?  Should I create an issue in JIRA ? 
> 
> Nicolas-Xavier
> 
> 
> nxv wrote
>> Here is another zip (I removed the test in relation with another issue:
>> DROOLS-421).  The right method method to execute is
>> testLeftTupleIndexHashTable() 
>> Drools-LeftTupleIndexHashTable-61b.zip
>> <http://drools.46999.n3.nabble.com/file/n4028138/Drools-LeftTupleIndexHashTable-61b.zip>  
>> 
>> 
>> Here is the trace:
>> 
>> 2014-02-17 09:04:15,450 [main] INFO  Found kmodule:
>> file:/E:/Project/Haulogy/EnergyComm/IDE/workspace-kepler/drools-61-bug/target/classes/META-INF/kmodule.xml
>> 2014-02-17 09:04:15,454 [main] DEBUG KieModule URL type=file
>> url=/Project/Haulogy/EnergyComm/IDE/workspace-kepler/drools-61-bug/target/classes
>> 2014-02-17 09:04:15,521 [main] DEBUG Found and used pom.properties
>> \Project\Haulogy\EnergyComm\IDE\workspace-kepler\drools-61-bug\target\classes\META-INF\maven\org.test2\test\pom.properties
>> 2014-02-17 09:04:15,524 [main] DEBUG Discovered classpath module
>> org.test2:test:0.0.1-SNAPSHOT
>> 2014-02-17 09:04:15,527 [main] INFO  KieModule was added:FileKieModule[
>> ReleaseId=org.test2:test:0.0.1-SNAPSHOTfile=\Project\Haulogy\EnergyComm\IDE\workspace-kepler\drools-61-bug\target\classes]
>> 2014-02-17 09:04:16,618 [main] DEBUG Starting Engine in PHREAK mode
>> 2014-02-17 09:04:16,664 [main] TRACE Adding Rule Qualification##Supply
>> ToStart##Fact loader##DeliveryPeriod from DeliveryPoint
>> 2014-02-17 09:04:16,667 [main] TRACE Adding Rule Qualification##Supply
>> ToStart##Sply-ToStrt_q-Std_crDPo
>> 2014-02-17 09:04:16,726 [main] TRACE Insert [fact
>> 0:1:1391516304:1391516304:1:DEFAULT:NON_TRAIT:org.after.evaluate.Message at 52f0da90]
>> 2014-02-17 09:04:16,733 [main] TRACE LinkNode notify=false nmask=1 smask=1
>> spos=0 rules=
>> 2014-02-17 09:04:16,734 [main] TRACE   LinkSegment smask=2 rmask=2
>> name=Qualification##Supply ToStart##Sply-ToStrt_q-Std_crDPo
>> 2014-02-17 09:04:16,738 [main] TRACE LinkNode notify=true nmask=1 smask=1
>> spos=0 rules=[RuleMem Qualification##Supply ToStart##Fact
>> loader##DeliveryPeriod from DeliveryPoint], [RuleMem Qualification##Supply
>> ToStart##Sply-ToStrt_q-Std_crDPo]
>> 2014-02-17 09:04:16,738 [main] TRACE Insert [fact
>> 0:2:528227185:528227185:2:DEFAULT:NON_TRAIT:org.leftTupleIndexHashTable.CommonPayloadData at 1f7c1b71]
>> 2014-02-17 09:04:16,739 [main] TRACE BetaNode insert=1
>> stagedInsertWasEmpty=true
>> 2014-02-17 09:04:16,739 [main] TRACE LinkNode notify=true nmask=2 smask=3
>> spos=0 rules=[RuleMem Qualification##Supply ToStart##Fact
>> loader##DeliveryPeriod from DeliveryPoint], [RuleMem Qualification##Supply
>> ToStart##Sply-ToStrt_q-Std_crDPo]
>> 2014-02-17 09:04:16,739 [main] TRACE   LinkSegment smask=1 rmask=1
>> name=Qualification##Supply ToStart##Fact loader##DeliveryPeriod from
>> DeliveryPoint
>> 2014-02-17 09:04:16,739 [main] TRACE   LinkSegment smask=1 rmask=3
>> name=Qualification##Supply ToStart##Sply-ToStrt_q-Std_crDPo
>> 2014-02-17 09:04:16,739 [main] TRACE     LinkRule
>> name=Qualification##Supply ToStart##Sply-ToStrt_q-Std_crDPo
>> 2014-02-17 09:04:16,750 [main] TRACE Queue RuleAgendaItem [Activation
>> rule=Qualification##Supply ToStart##Sply-ToStrt_q-Std_crDPo, act#=0,
>> salience=0, tuple=null]
>> 2014-02-17 09:04:16,750 [main] TRACE Queue Added 1 [Activation
>> rule=Qualification##Supply ToStart##Sply-ToStrt_q-Std_crDPo, act#=0,
>> salience=0, tuple=null]
>> 2014-02-17 09:04:16,750 [main] TRACE Rule[name=Qualification##Supply
>> ToStart##Sply-ToStrt_q-Std_crDPo] segments=2 TupleSets[insertSize=1,
>> deleteSize=0, updateSize=0]
>> 2014-02-17 09:04:16,750 [main] TRACE      1 [JoinNode(5) -
>> [ClassObjectType class=org.leftTupleIndexHashTable.CommonPayloadData]]
>> TupleSets[insertSize=1, deleteSize=0, updateSize=0]
>> 2014-02-17 09:04:16,750 [main] TRACE      Segment 0
>> 2014-02-17 09:04:16,750 [main] TRACE      1 [JoinNode(5) -
>> [ClassObjectType class=org.leftTupleIndexHashTable.CommonPayloadData]]
>> TupleSets[insertSize=1, deleteSize=0, updateSize=0]
>> 2014-02-17 09:04:16,754 [main] TRACE      rightTuples
>> TupleSets[insertSize=1, deleteSize=0, updateSize=0]
>> 2014-02-17 09:04:16,755 [main] TRACE      Segment 1
>> 2014-02-17 09:04:16,755 [main] TRACE        2 [NotNode(9) -
>> [ClassObjectType class=org.after.evaluate.DeliveryPoint]]
>> TupleSets[insertSize=1, deleteSize=0, updateSize=0]
>> 2014-02-17 09:04:16,755 [main] TRACE        Segment 1
>> 2014-02-17 09:04:16,755 [main] TRACE        2 [NotNode(9) -
>> [ClassObjectType class=org.after.evaluate.DeliveryPoint]]
>> TupleSets[insertSize=1, deleteSize=0, updateSize=0]
>> 2014-02-17 09:04:16,755 [main] TRACE        rightTuples
>> TupleSets[insertSize=0, deleteSize=0, updateSize=0]
>> 2014-02-17 09:04:16,756 [main] TRACE          3 [RuleTerminalNode(10):
>> rule=Qualification##Supply ToStart##Sply-ToStrt_q-Std_crDPo]
>> TupleSets[insertSize=1, deleteSize=0, updateSize=0]
>> 2014-02-17 09:04:16,756 [main] TRACE          Segment 1
>> 2014-02-17 09:04:16,756 [main] TRACE          3 [RuleTerminalNode(10):
>> rule=Qualification##Supply ToStart##Sply-ToStrt_q-Std_crDPo]
>> TupleSets[insertSize=1, deleteSize=0, updateSize=0]
>> 2014-02-17 09:04:16,757 [main] TRACE Fire "Qualification##Supply
>> ToStart##Sply-ToStrt_q-Std_crDPo" 
>> [[ Qualification##Supply ToStart##Sply-ToStrt_q-Std_crDPo active=false ] [
>> null
>> [fact
>> 0:2:528227185:528227185:2:DEFAULT:NON_TRAIT:org.leftTupleIndexHashTable.CommonPayloadData at 1f7c1b71]
>> [fact
>> 0:1:1391516304:1391516304:1:DEFAULT:NON_TRAIT:org.after.evaluate.Message at 52f0da90]
>> ] ]
>> 2014-02-17 09:04:16,760 [main] TRACE Update [fact
>> 0:2:528227185:528227185:3:DEFAULT:NON_TRAIT:org.leftTupleIndexHashTable.CommonPayloadData at 1f7c1b71]
>> 2014-02-17 09:04:16,761 [main] TRACE   LinkSegment smask=1 rmask=1
>> name=Qualification##Supply ToStart##Fact loader##DeliveryPeriod from
>> DeliveryPoint
>> 2014-02-17 09:04:16,761 [main] TRACE   LinkSegment smask=1 rmask=3
>> name=Qualification##Supply ToStart##Sply-ToStrt_q-Std_crDPo
>> 2014-02-17 09:04:16,761 [main] TRACE     LinkRule
>> name=Qualification##Supply ToStart##Sply-ToStrt_q-Std_crDPo
>> 2014-02-17 09:04:16,761 [main] TRACE Insert [fact
>> 0:3:2030712447:2030712447:4:DEFAULT:NON_TRAIT:org.after.evaluate.DeliveryPoint at 790a367f]
>> 2014-02-17 09:04:16,761 [main] TRACE BetaNode insert=1
>> stagedInsertWasEmpty=true
>> 2014-02-17 09:04:16,761 [main] TRACE LinkNode notify=true nmask=1 smask=1
>> spos=1 rules=[RuleMem Qualification##Supply ToStart##Fact
>> loader##DeliveryPeriod from DeliveryPoint]
>> 2014-02-17 09:04:16,761 [main] TRACE   LinkSegment smask=2 rmask=3
>> name=Qualification##Supply ToStart##Fact loader##DeliveryPeriod from
>> DeliveryPoint
>> 2014-02-17 09:04:16,761 [main] TRACE     LinkRule
>> name=Qualification##Supply ToStart##Fact loader##DeliveryPeriod from
>> DeliveryPoint
>> 2014-02-17 09:04:16,761 [main] TRACE Queue RuleAgendaItem [Activation
>> rule=Qualification##Supply ToStart##Fact loader##DeliveryPeriod from
>> DeliveryPoint, act#=2, salience=0, tuple=null]
>> 2014-02-17 09:04:16,761 [main] TRACE Queue Added 1 [Activation
>> rule=Qualification##Supply ToStart##Fact loader##DeliveryPeriod from
>> DeliveryPoint, act#=2, salience=0, tuple=null]
>> 2014-02-17 09:04:16,762 [main] TRACE LinkNode notify=true nmask=1 smask=1
>> spos=1 rules=[RuleMem Qualification##Supply
>> ToStart##Sply-ToStrt_q-Std_crDPo]
>> 2014-02-17 09:04:16,762 [main] TRACE   LinkSegment smask=2 rmask=3
>> name=Qualification##Supply ToStart##Sply-ToStrt_q-Std_crDPo
>> 2014-02-17 09:04:16,762 [main] TRACE     LinkRule
>> name=Qualification##Supply ToStart##Sply-ToStrt_q-Std_crDPo
>> 2014-02-17 09:04:16,762 [main] TRACE Rule[name=Qualification##Supply
>> ToStart##Fact loader##DeliveryPeriod from DeliveryPoint] segments=2
>> TupleSets[insertSize=0, deleteSize=0, updateSize=0]
>> 2014-02-17 09:04:16,762 [main] TRACE      4 [JoinNode(5) -
>> [ClassObjectType class=org.leftTupleIndexHashTable.CommonPayloadData]]
>> TupleSets[insertSize=0, deleteSize=0, updateSize=0]
>> 2014-02-17 09:04:16,762 [main] TRACE      Segment 0
>> 2014-02-17 09:04:16,762 [main] TRACE      4 [JoinNode(5) -
>> [ClassObjectType class=org.leftTupleIndexHashTable.CommonPayloadData]]
>> TupleSets[insertSize=0, deleteSize=0, updateSize=0]
>> 2014-02-17 09:04:16,762 [main] TRACE      rightTuples
>> TupleSets[insertSize=0, deleteSize=0, updateSize=1]
>> 2014-02-17 09:04:16,762 [main] TRACE      Segment 1
>> 2014-02-17 09:04:16,762 [main] TRACE        5 [JoinNode(7) -
>> [ClassObjectType class=org.after.evaluate.DeliveryPoint]]
>> TupleSets[insertSize=0, deleteSize=0, updateSize=1]
>> 2014-02-17 09:04:16,762 [main] TRACE        Segment 1
>> 2014-02-17 09:04:16,762 [main] TRACE        5 [JoinNode(7) -
>> [ClassObjectType class=org.after.evaluate.DeliveryPoint]]
>> TupleSets[insertSize=0, deleteSize=0, updateSize=1]
>> 2014-02-17 09:04:16,762 [main] TRACE        rightTuples
>> TupleSets[insertSize=1, deleteSize=0, updateSize=0]
>> 
>> Mark Proctor wrote
>>> Also as a tip, turn on TRACE mode, for the logback.xml, and post back the
>>> results.
>>> 
>>> Mark
>>> 
>>> <?xml version="1.0" encoding="UTF-8"?>
>>> <configuration>
>>> 
>>> <appender name="consoleAppender"
>>> class="ch.qos.logback.core.ConsoleAppender">
>>> 
>>> <encoder>
>>> 
>>> <pattern>
>>> %d [%t] %-5p %m%n
>>> </pattern>
>>> 
>>> </encoder>
>>> 
>>> </appender>
>>> 
>>> <logger name="org.drools" level=“TRACE"/>
>>> 
>>> <root level="info">
>>> 
>>> <appender-ref ref="consoleAppender" />
>>> 
>>> </root>
>>> 
>>> </configuration>
>>> 
>>> 
>>> 
>>> On 16 Feb 2014, at 23:55, Mark Proctor &lt;
> 
>>> mproctor@
> 
>>> &gt; wrote:
>>> 
>>>> you have two drl files. One with two rules, one with one rule. Which is
>>>> the rule you were adding and removing to see the bug?
>>>> 
>>>> Mark
>>>> On 16 Feb 2014, at 22:50, nxv &lt;
> 
>>> nxvanderlinden@
> 
>>> &gt; wrote:
>>>> 
>>>>> Here is the unit test. Drools-LeftTupleIndexHashTable-61.zip
>>>>> &lt;http://drools.46999.n3.nabble.com/file/n4028135/Drools-LeftTupleIndexHashTable-61.zip&gt;  
>>>>> 
>>>>> 
>>>>> Mark Proctor wrote
>>>>>> Can you paste the 3 rules, that cause the issue? We’ll see if we can
>>>>>> gleam
>>>>>> something from that, while we wait for your unit test.
>>>>>> 
>>>>>> Mark
>>>>>> On 16 Feb 2014, at 19:25, nxv &lt;
>>>>> 
>>>>>> nxvanderlinden@
>>>>> 
>>>>>> &gt; wrote:
>>>>>> 
>>>>>>> Hello,
>>>>>>> 
>>>>>>> I keep trying to migrate drools from 5.5 to 6 on my project.  I found
>>>>>>> a
>>>>>>> second regression/issue.  I'm trying to produce a unit test for
>>>>>>> 6.1.0-SNAPSHOT but I face some difficulties to determine the cause of
>>>>>>> this
>>>>>>> issue.  So I have a drl with 3 rules.  I'm a bit disappointed because
>>>>>>> if
>>>>>>> I
>>>>>>> switch two rules (without modifying anything, just switch one rule
>>>>>>> with
>>>>>>> another in the drl file), the NPE disappears... 
>>>>>>> 
>>>>>>> 
>>>>>>> Here is the stacktrace:
>>>>>>> 
>>>>>>> java.lang.NullPointerException
>>>>>>> 	at
>>>>>>> org.drools.core.util.index.LeftTupleIndexHashTable.remove(LeftTupleIndexHashTable.java:386)
>>>>>>> 	at
>>>>>>> org.drools.core.phreak.RuleNetworkEvaluator.doUpdatesReorderLeftMemory(RuleNetworkEvaluator.java:799)
>>>>>>> 	at
>>>>>>> org.drools.core.phreak.PhreakJoinNode.doNode(PhreakJoinNode.java:38)
>>>>>>> 	at
>>>>>>> org.drools.core.phreak.RuleNetworkEvaluator.switchOnDoBetaNode(RuleNetworkEvaluator.java:547)
>>>>>>> 	at
>>>>>>> org.drools.core.phreak.RuleNetworkEvaluator.evalBetaNode(RuleNetworkEvaluator.java:533)
>>>>>>> 	at
>>>>>>> org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:334)
>>>>>>> 	at
>>>>>>> org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:161)
>>>>>>> 	at
>>>>>>> org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:116)
>>>>>>> 	at
>>>>>>> org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:201)
>>>>>>> 	at
>>>>>>> org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:68)
>>>>>>> 	at
>>>>>>> org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:935)
>>>>>>> 	at
>>>>>>> org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1200)
>>>>>>> 	at
>>>>>>> org.drools.core.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:952)
>>>>>>> 	at
>>>>>>> org.drools.core.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:926)
>>>>>>> 	at
>>>>>>> org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:232)
>>>>>>> 	at
>>>>>>> org.drools.core.command.runtime.rule.FireAllRulesCommand.execute(FireAllRulesCommand.java:106)
>>>>>>> 	at
>>>>>>> org.drools.core.command.runtime.rule.FireAllRulesCommand.execute(FireAllRulesCommand.java:32)
>>>>>>> 	at
>>>>>>> org.drools.core.command.runtime.BatchExecutionCommandImpl.execute(BatchExecutionCommandImpl.java:155)
>>>>>>> 	at
>>>>>>> org.drools.core.command.runtime.BatchExecutionCommandImpl.execute(BatchExecutionCommandImpl.java:76)
>>>>>>> 	at
>>>>>>> org.drools.core.impl.StatelessKnowledgeSessionImpl.execute(StatelessKnowledgeSessionImpl.java:334)
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> --
>>>>>>> View this message in context:
>>>>>>> http://drools.46999.n3.nabble.com/NullPointerException-with-LeftTupleIndexHashTable-remove-tp4028133.html
>>>>>>> Sent from the Drools: User forum mailing list archive at Nabble.com.
>>>>>>> _______________________________________________
>>>>>>> rules-users mailing list
>>>>>>> 
>>>>> 
>>>>>> rules-users at .jboss
>>>>> 
>>>>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>>>> 
>>>>>> 
>>>>>> _______________________________________________
>>>>>> rules-users mailing list
>>>>> 
>>>>>> rules-users at .jboss
>>>>> 
>>>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> --
>>>>> View this message in context:
>>>>> http://drools.46999.n3.nabble.com/NullPointerException-with-LeftTupleIndexHashTable-remove-tp4028133p4028135.html
>>>>> Sent from the Drools: User forum mailing list archive at Nabble.com.
>>>>> 
>>>>> _______________________________________________
>>>>> rules-users mailing list
>>>>> 
> 
>>> rules-users at .jboss
> 
>>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>> 
>>> 
>>> 
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> 
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> 
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> 
> 
> --
> View this message in context: http://drools.46999.n3.nabble.com/NullPointerException-with-LeftTupleIndexHashTable-remove-tp4028133p4028282.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
> 
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