Quanlong Huang created IMPALA-9410:
--------------------------------------
Summary: Support resolving ORC file columns by names
Key: IMPALA-9410
URL: https://issues.apache.org/jira/browse/IMPALA-9410
Project: IMPALA
Issue Type: Bug
Reporter: Quanlong Huang
Currently we resolve ORC file columns by indices. We should provide an query
option like PARQUET_FALLBACK_SCHEMA_RESOLUTION for Parquet, to resolve ORC file
columns by names.
Note that Hive only writes column names to ORC files after Hive-2.x
(HIVE-4243). For older versions of Hive, the column names in ORC files are
something like _col0, _col1,....,_col99. So this feature is only required when
deployed with Hive 2+.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
