Github user rajeshbalamohan commented on the issue: https://github.com/apache/spark/pull/14471 Thanks @rxin. Changes: 1. Added test case. Also added sample orc file (392 bytes) from Hive 1.x with format "Type: struct<_col0:int,_col1:string>". Without this PR change in OrcFileFormat, it would end up throwing "java.lang.IllegalArgumentException: Field "key" does not exist." for the same test case. 2. Fixed the title of the JIRA and the PR.
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