Brian Tan created PIG-2718:
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Summary: Error casting Long to Double inside the COV UDF
Key: PIG-2718
URL: https://issues.apache.org/jira/browse/PIG-2718
Project: Pig
Issue Type: Bug
Affects Versions: 0.10.0, 0.9.2
Reporter: Brian Tan
1.txt:
1, 2, 3
4, 5, 6
7, 8, 9
a = load '1.txt' using PigStorage(',') as (x:double, y:double, z:double);
b = group a all;
c = foreach b generate COV(a.$0, a.$0);
Following exception is thrown:
Caused by: java.io.IOException: Caught exception processing input
at org.apache.pig.builtin.COV.combine(COV.java:279)
at org.apache.pig.builtin.COV$Intermed.exec(COV.java:170)
Caused by: java.lang.ClassCastException: java.lang.Long cannot be cast to
java.lang.Double
at org.apache.pig.builtin.COV.combine(COV.java:266)
http://svn.apache.org/viewvc/pig/trunk/src/org/apache/pig/builtin/COV.java
This can be easily fixed by changing count on line 259 from double to long, and
tempCount on line 221 from double to long
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