bucketizedhiveinputformat.q fails in minimr mode

followup to HIVE-1523:

ant -Dtestcase=TestCliDriver -Dqfile=bucketizedhiveinputformat.q -Dclustermode=miniMR clean-test test

[junit] Begin query: bucketizedhiveinputformat.q
[junit] Exception: null
[junit] java.lang.AssertionError
[junit] at org.apache.hadoop.hive.ql.exec.ExecDriver.showJobFailDebugInfo(ExecDriver.java:788)
[junit] at org.apache.hadoop.hive.ql.exec.ExecDriver.execute(ExecDriver.java:624)
[junit] at org.apache.hadoop.hive.ql.exec.MapRedTask.execute(MapRedTask.java:120)

ExecDriver.java:788
// These tasks should have come from the same job.
assert(ti.getJobId() == jobId);