[AVRO-2114] Make missing value exceptions in nested structures easier to read.

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.9.0
• Component/s: java
• Assignee: Niels Basjes
• Reporter: Niels Basjes
• Created: 12/Dec/17 11:08
• Updated: 24/Oct/19 08:26
• Resolved: 15/Dec/17 20:23

Description

If you have in Java the generated SpecificRecord structure and it has nested fields then finding the cause of the problem takes a while. The cause is that the system wraps the deeper runtime exception in another runtime exception and in the end it can become too much to dig through.

Goal: make the exception in this kind of scenario easier to read.

If you let this test fail https://github.com/apache/avro/blob/master/lang/java/ipc/src/test/java/org/apache/avro/specific/TestSpecificBuilderTree.java#L75 the stacktrace you get looks like this:

org.apache.avro.AvroRuntimeException: org.apache.avro.AvroRuntimeException: org.apache.avro.AvroRuntimeException: Field networkAddress type:STRING pos:1 not set and has no default value

	at org.apache.avro.test.http.Request$Builder.build(Request.java:450)
	at org.apache.avro.specific.TestSpecificBuilderTree.failOnIncompleteTree(TestSpecificBuilderTree.java:77)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	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$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: org.apache.avro.AvroRuntimeException: org.apache.avro.AvroRuntimeException: Field networkAddress type:STRING pos:1 not set and has no default value
	at org.apache.avro.test.http.NetworkConnection$Builder.build(NetworkConnection.java:293)
	at org.apache.avro.test.http.Request$Builder.build(Request.java:439)
	... 23 more
Caused by: org.apache.avro.AvroRuntimeException: Field networkAddress type:STRING pos:1 not set and has no default value
	at org.apache.avro.generic.GenericData.getDefaultValue(GenericData.java:998)
	at org.apache.avro.data.RecordBuilderBase.defaultValue(RecordBuilderBase.java:138)
	at org.apache.avro.test.http.NetworkConnection$Builder.build(NetworkConnection.java:290)
	... 24 more

Issue Links

• links to: GitHub Pull Request #263
• links to: GitHub Pull Request #269