Yes, this sounds very familiar.
We had a pull request from Scala steward to updated scala to from
2.12.11 to 2.12.13 which triggered what I think is the same bug:
https://github.com/apache/daffodil/pull/505
Based on some of my comments in the PR, I tracked it down to a change in
Scala 2.12.12 that caused some deserialization issues. Daffodil 2.7.0
ships with Scala 2.12.11, but if you're overriding that dependency to
use a newer version of Scala, that might be the cause.
The fix (added to that same PR) required code changes, so I don't think
there is a workaround aside from downgrading Scala to 2.12.11.
Also, this fix was part of Daffodil 3.1.0, so any previous Daffodil
versions probably shouldn't use a Scala version newer than 2.12.11, at
least if there are plans to save/reload parsers.
On 12/30/21 7:28 PM, Mike Beckerle wrote:
I have a test failing that I'm running against Daffodil 2.7.0. I'm
developing a large schema for a big obscure data format.
I need the schema to work on Daffodil 2.7.0, so I'm hoping to find a
workaround.
The bug does not occur in Daffodil 3.2.1.
The issue seems related to the TDML runner's saving/reloading of the
compiled schema.
The test is a TDML parserTestCase with a data file, infoset, and expected
validation errors. It is run validation="limited" and roundTrip="twoPass".
Here's the error:
Creating DFDL Test Suite for
file:/home/mbeckerle/Documents/dataiti/git/dfdl-schemas/dfdl-p8/target/test-classes/com/owlcyberdefense/p8/p8-HfCommand.tdml
java.lang.ClassCastException: cannot assign instance of
scala.collection.immutable.List$SerializationProxy to field
org.apache.daffodil.dsom.DPathCompileInfo.enclosingElementCompileInfos of
type scala.collection.Seq in instance of
org.apache.daffodil.dsom.DPathElementCompileInfo
at
java.base/java.io.ObjectStreamClass$FieldReflector.setObjFieldValues(ObjectStreamClass.java:2227)
at
java.base/java.io.ObjectStreamClass$FieldReflector.checkObjectFieldValueTypes(ObjectStreamClass.java:2191)
at
java.base/java.io.ObjectStreamClass.checkObjFieldValueTypes(ObjectStreamClass.java:1478)
at
java.base/java.io.ObjectInputStream$FieldValues.defaultCheckFieldValues(ObjectInputStream.java:2657)
at
java.base/java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2471)
at
java.base/java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2242)
....elided lots of serialized reading nested frames....
at
java.base/java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1742)
at
java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:514)
at
java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:472)
at org.apache.daffodil.compiler.Compiler.reload(Compiler.scala:257)
at
org.apache.daffodil.tdml.processor.TDMLDFDLProcessorFactory.generateProcessor(DaffodilTDMLDFDLProcessor.scala:121)
at
org.apache.daffodil.tdml.processor.TDMLDFDLProcessorFactory.compileProcessor(DaffodilTDMLDFDLProcessor.scala:138)
at
org.apache.daffodil.tdml.processor.TDMLDFDLProcessorFactory.$anonfun$getProcessor$1(DaffodilTDMLDFDLProcessor.scala:154)
at
org.apache.daffodil.tdml.SchemaCache.doCompile$lzycompute$1(SchemaCache.scala:95)
at org.apache.daffodil.tdml.SchemaCache.doCompile$1(SchemaCache.scala:95)
at
org.apache.daffodil.tdml.SchemaCache.$anonfun$compileAndCache$1(SchemaCache.scala:108)
at scala.collection.mutable.HashMap.getOrElseUpdate(HashMap.scala:86)
at
org.apache.daffodil.tdml.SchemaCache$Cache.getOrElseUpdate(SchemaCache.scala:51)
at
org.apache.daffodil.tdml.SchemaCache.compileAndCache(SchemaCache.scala:107)
at
org.apache.daffodil.tdml.processor.TDMLDFDLProcessorFactory.getProcessor(DaffodilTDMLDFDLProcessor.scala:154)
at org.apache.daffodil.tdml.TestCase.run(TDMLRunner.scala:756)
at org.apache.daffodil.tdml.DFDLTestSuite.runOneTest(TDMLRunner.scala:390)
at org.apache.daffodil.tdml.Runner.runOneTest(RunnerFactory.scala:144)
at org.apache.daffodil.tdml.Runner.runOneTest(RunnerFactory.scala:150)
at
com.owlcyberdefense.p8.TestP8HfCommand.testHfCommand1Neg(TestP8HfCommand.scala:29)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at
com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
at
com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
at
com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)
Process finished with exit code 255
