EvalFunc should use equals() to check equal for ReturnType of
Initial/Intermed/Final
------------------------------------------------------------------------------------
Key: PIG-2377
URL: https://issues.apache.org/jira/browse/PIG-2377
Project: Pig
Issue Type: Bug
Components: impl
Affects Versions: 0.9.1
Reporter: robin zhang tao
When EvalFunc check the return type equals with ReturnType of
Initial/Intermed/Final, it uses the "==" operator.
But it should not use "==", but "equals()".
I have built one UDF, its return type is "Map<String, Long>", and also the
Final class returns "Map<String, Long>".
public class MapLongSum extends EvalFunc<Map<String, Long>> implements
Algebraic,
Accumulator<Map<String, Long>> {
...
...
static public class Final extends EvalFunc<Map<String, Long>> {
...
}
}
But Pig always reports error:
Caused by: java.lang.RuntimeException: Final function of
com.duowan.yy.etl.log.eval.MapIntSum is not of the expected type.
at org.apache.pig.EvalFunc.<init>(EvalFunc.java:146)
at com.duowan.yy.etl.log.eval.MapIntSum.<init>(MapIntSum.java:40)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at
org.apache.pig.impl.PigContext.instantiateFuncFromSpec(PigContext.java:474)
... 31 more
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