The previous approach could lead to hangs or cryptic error messages
because it removed the ORC data type from a lookup table.
Instead check explicitly in the planner for ORC scans and throw a
more helpful error message.
Testing:
Added custom cluster test to exercise code and check error message.
Change-Id: I209e79b18745c48d0182800a916d6566083f4609
Reviewed-on: http://gerrit.cloudera.org:8080/11835
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
