[CAMEL-16918] Datasonnet expression fails on first runs in a route called in multicast

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.11.1
• Fix Version/s: 3.11.2, 3.12.0
• Component/s: camel-language
• Estimated Complexity: Unknown
• Assignee: Claus Ibsen
• Reporter: Henrik Karlsson
• Created: 03/Sep/21 07:37
• Updated: 03/Sep/21 16:14
• Resolved: 03/Sep/21 16:14

Description

I use a multicast().parallelProcessing() that calls three routes that all use DataSonnet expressions. After starting the app the first runs of this route fails with an java.util.ConcurrentModificationException.

I getting these two stack traces from to different threads:

Thread #1: 

org.apache.camel.RuntimeExpressionException: Unable to evaluate DataSonnet expression: 'PayerId = :?payer_id' + if (!ds.isEmpty(cml.header('orderer_id'))) then (' and OrdererId = :?orderer_id' + if (!ds.isEmpty(cml.header('workplace_id'))) then ' and Id = :?workplace_id' else '') else ''
	at org.apache.camel.language.datasonnet.DatasonnetExpression.evaluate(DatasonnetExpression.java:115) ~[camel-datasonnet-3.11.1.jar:3.11.1]
	at org.apache.camel.processor.SetHeaderProcessor.process(SetHeaderProcessor.java:48) ~[camel-core-processor-3.11.1.jar:3.11.1]
	at org.apache.camel.processor.errorhandler.RedeliveryErrorHandler$SimpleTask.run(RedeliveryErrorHandler.java:463) ~[camel-core-processor-3.11.1.jar:3.11.1]
	at org.apache.camel.impl.engine.DefaultReactiveExecutor$Worker.schedule(DefaultReactiveExecutor.java:179) ~[camel-base-engine-3.11.1.jar:3.11.1]
	at org.apache.camel.impl.engine.DefaultReactiveExecutor.schedule(DefaultReactiveExecutor.java:59) ~[camel-base-engine-3.11.1.jar:3.11.1]
	at org.apache.camel.processor.MulticastProcessor.lambda$schedule$1(MulticastProcessor.java:348) ~[camel-core-processor-3.11.1.jar:3.11.1]
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na]
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) ~[na:na]
	at java.base/java.lang.Thread.run(Thread.java:831) ~[na:na]
Caused by: java.util.ConcurrentModificationException: null
	at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1225) ~[na:na]
	at org.apache.camel.language.datasonnet.DatasonnetLanguage.computeIfMiss(DatasonnetLanguage.java:103) ~[camel-datasonnet-3.11.1.jar:3.11.1]
	at org.apache.camel.language.datasonnet.DatasonnetExpression.doEvaluate(DatasonnetExpression.java:143) ~[camel-datasonnet-3.11.1.jar:3.11.1]
	at org.apache.camel.language.datasonnet.DatasonnetExpression.evaluate(DatasonnetExpression.java:106) ~[camel-datasonnet-3.11.1.jar:3.11.1]
	... 10 common frames omitted

Thread #2: 

org.apache.camel.RuntimeExpressionException: Unable to evaluate DataSonnet expression: !ds.isEmpty(cml.header('payer_id'))
	at org.apache.camel.language.datasonnet.DatasonnetExpression.evaluate(DatasonnetExpression.java:115) ~[camel-datasonnet-3.11.1.jar:3.11.1]
	at org.apache.camel.language.datasonnet.DatasonnetExpression.matches(DatasonnetExpression.java:93) ~[camel-datasonnet-3.11.1.jar:3.11.1]
	at org.apache.camel.processor.FilterProcessor.matches(FilterProcessor.java:77) ~[camel-core-processor-3.11.1.jar:3.11.1]
	at org.apache.camel.processor.ChoiceProcessor.process(ChoiceProcessor.java:71) ~[camel-core-processor-3.11.1.jar:3.11.1]
	at org.apache.camel.processor.errorhandler.RedeliveryErrorHandler$SimpleTask.run(RedeliveryErrorHandler.java:463) ~[camel-core-processor-3.11.1.jar:3.11.1]
	at org.apache.camel.impl.engine.DefaultReactiveExecutor$Worker.schedule(DefaultReactiveExecutor.java:179) ~[camel-base-engine-3.11.1.jar:3.11.1]
	at org.apache.camel.impl.engine.DefaultReactiveExecutor.schedule(DefaultReactiveExecutor.java:59) ~[camel-base-engine-3.11.1.jar:3.11.1]
	at org.apache.camel.processor.MulticastProcessor.lambda$schedule$1(MulticastProcessor.java:348) ~[camel-core-processor-3.11.1.jar:3.11.1]
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na]
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) ~[na:na]
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) ~[na:na]
	at java.base/java.lang.Thread.run(Thread.java:831) ~[na:na]
Caused by: java.util.ConcurrentModificationException: null
	at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1225) ~[na:na]
	at org.apache.camel.language.datasonnet.DatasonnetLanguage.computeIfMiss(DatasonnetLanguage.java:103) ~[camel-datasonnet-3.11.1.jar:3.11.1]
	at org.apache.camel.language.datasonnet.DatasonnetExpression.doEvaluate(DatasonnetExpression.java:143) ~[camel-datasonnet-3.11.1.jar:3.11.1]
	at org.apache.camel.language.datasonnet.DatasonnetExpression.evaluate(DatasonnetExpression.java:106) ~[camel-datasonnet-3.11.1.jar:3.11.1]
	... 12 common frames omitted