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Ashutosh Chauhan commented on HIVE-5563: ---------------------------------------- HIVE-5546 got committed an hour back, which supposedly fixed this. > Skip reading columns in ORC for count(*) > ---------------------------------------- > > Key: HIVE-5563 > URL: https://issues.apache.org/jira/browse/HIVE-5563 > Project: Hive > Issue Type: Bug > Components: File Formats > Reporter: Owen O'Malley > > With HIVE-4113, the semantics of ColumnProjectionUtils.getReadColumnIds was > fixed so that an empty list means no columns instead of all columns. (Except > the caveat of the override of ColumnProjectionUtils.isReadAllColumns.) > However, ORC's reader wasn't updated so it still reads all columns. -- This message was sent by Atlassian JIRA (v6.1#6144)