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https://issues.apache.org/jira/browse/AVRO-382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12805583#action_12805583
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Philip Zeyliger commented on AVRO-382:
--------------------------------------
I just committed this. Thanks, Michael!
> hashCode throws a NullPointerException when fields are uninitialized
> --------------------------------------------------------------------
>
> Key: AVRO-382
> URL: https://issues.apache.org/jira/browse/AVRO-382
> Project: Avro
> Issue Type: Bug
> Components: java
> Affects Versions: 1.2.0
> Reporter: Michael Armbrust
> Priority: Minor
> Attachments: hashCodeTest.diff, hashFix.diff
>
>
> When you call hashCode on an Avro Record with unitialized fields the method
> throws a NullPointerException. This is especially troublesome if you are
> trying to instantiate an object from an interactive console (like scala), as
> this makes it impossible to create records. Here is an example, where KVPair
> is defined as follows:
> {noformat}
> {
> "namespace": "edu.berkeley.cs.scads",
> "protocol": "Storage",
> "types": [
> {"name": "KVPair", "type": "record", "fields": [
> {"name": "key", "type": "string"},
> {"name": "value", "type": "string"}]
> }
> ]
> }
> {noformat}
> And the error:
> {noformat}
> scala> val x = new edu.berkeley.cs.scads.KVPair
> val x = new edu.berkeley.cs.scads.KVPair
> java.lang.NullPointerException
> at
> org.apache.avro.specific.SpecificRecordBase.hashCode(SpecificRecordBase.java:62)
> at
> org.apache.avro.specific.SpecificRecordBase.hashCode(SpecificRecordBase.java:55)
> at edu.berkeley.cs.scads.KVPair.hashCode(Record.java:50001)
> at java.lang.Object.toString(Object.java:219)
> at edu.berkeley.cs.scads.KVPair.toString(Record.java:50001)
> at scala.runtime.ScalaRunTime$.stringOf(ScalaRunTime.scala:165)
> at RequestResult$.<init>(<console>:4)
> at RequestResult$.<clinit>(<console>)
> at RequestResult$result(<console>)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at scala.tools.nsc.Interpreter$Request.loadAndRun(Interpreter.scala:889)
> at scala.tools.nsc.Interpreter.interpret(Interpreter.scala:508)
> at
> scala.tools.nsc.InterpreterLoop.interpretStartingWith(InterpreterLoop.scala:242)
> at scala.tools.nsc.InterpreterLoop.command(InterpreterLoop.scala:230)
> at scala.tools.nsc.InterpreterLoop.repl(InterpreterLoop.scala:142)
> at scala.tools.nsc.InterpreterLoop.main(InterpreterLoop.scala:298)
> at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:141)
> at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
> {noformat}
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