XMLEncoder failing to serialize classes containing Enums for non-SUN JREs
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Key: HIVE-1686
URL: https://issues.apache.org/jira/browse/HIVE-1686
Project: Hadoop Hive
Issue Type: Bug
Components: Serializers/Deserializers
Affects Versions: 0.5.0
Environment: SLES 10 SP2, IBM Java 1.6 SR8
Reporter: Stephen Watt
Priority: Minor
Fix For: 0.5.1
If one is using Hive 0.5 with IBM Java 1.6 certain Hive Queries will fail in
the Hive CLI, such as "SELECT Count(1) from TABLE" with the error "failed to
write expression: GenericUDAFEvaluator$Mode=Class.new()". This is due to the
fact that XMLEncoder in the JRE's beans.jar is not able to serialize Classes
with Enums without an explicitly having an EnumPersistenceDelegate assigned to
each class that needs to be serialized. This was an issue in SUN JDK 1.5 but
not 1.6 and is still an issue in IBM Java 1.6.
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