Github user rajeshbalamohan commented on the issue:
https://github.com/apache/spark/pull/14537
For non-partitioned ORC, it is currently using the metastore schema and is
not inferring the schema currently in HiveMetastoreCatalog, and hence not an
issue. But the problem of wrong mapping (i.e physical col name in file being
different than that of metastore) still exists. The more I see it, it would be
easier to club the patches in this JIRA itself. If so, HiveMetastoreCatalog
could just rely on metastoreSchema and ORCFileFormat can later do the mapping
if the mappings are different. I will revise the patch to include this scenario
and post it.
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