[ https://issues.apache.org/jira/browse/HIVE-5563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13797028#comment-13797028 ]
Edward Capriolo commented on HIVE-5563: --------------------------------------- Just a note/question? How is rcfile effected by these changes. Do we have api fragmentation going on are both formats effected? I am not seeing any end-to-end test in hive-5546 what are we doing to prevent code rot, and to ensure this mistake does not happen again? > 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)