[ https://issues.apache.org/jira/browse/AVRO-1240?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Doug Cutting updated AVRO-1240: ------------------------------- Fix Version/s: 1.7.4 Status: Patch Available (was: Open) > SpecificDataumReader.next() can return a GenericData.Record resulting in a > ClassCastException > --------------------------------------------------------------------------------------------- > > Key: AVRO-1240 > URL: https://issues.apache.org/jira/browse/AVRO-1240 > Project: Avro > Issue Type: Bug > Components: java > Affects Versions: 1.7.3 > Reporter: Brock Noland > Assignee: Brock Noland > Fix For: 1.7.4 > > Attachments: AVRO-1240.patch > > > The following reasonable code: > {noformat} > DatumReader<Test> reader = new SpecificDatumReader<Test>(Test.class); > DataFileReader<Test> dataFileReader = new DataFileReader<Test>(file, > reader); > Test datum = null; > while(dataFileReader.hasNext()) { > datum = dataFileReader.next(datum); > System.out.println(datum); > } > {noformat} > Can result in a runtime exception: > {noformat} > $ java -cp avro-1.7.3.jar:$(hadoop classpath) org.apache.hadoop.util.RunJar > target/avro-example-1.0-jar-with-dependencies.jar Sample target/test-file > Exception in thread "main" java.lang.ClassCastException: > org.apache.avro.generic.GenericData$Record cannot be cast to Test > at Sample.main(Sample.java:27) > 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 org.apache.hadoop.util.RunJar.main(RunJar.java:208) > {noformat} > when the jar containing the specific class (Test in my example) is loaded > from a different classloader than the avro jar itself. This occurs when run > via the hadoop jar command but could occur in web containers or other > locations as well. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira