Jim Donofrio created MRUNIT-154:
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Summary: shuffle in MapReduceDriverBase does not support
comparators that only override compare(byte[] b1, int s1, int l1, byte[] b2,
int s2, int l2)
Key: MRUNIT-154
URL: https://issues.apache.org/jira/browse/MRUNIT-154
Project: MRUnit
Issue Type: Bug
Reporter: Jim Donofrio
>From MRUNIT-114:
Because the shuffle method in MapReduceDriverBase calls the key ordering
comparator using compare(Object,Object), it does not call the correct method on
classes which only override and do all the work in compare(byte[] b1, int s1,
int l1, byte[] b2, int s2, int l2), like KeyFieldBasedComparator.
It might be better to check whether the two keys are BinaryComparable, casting,
and calling this method if possible. Even if a user's comparator doesn't
override it, the default implementation of this in WritableComparator would
still be OK.
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