Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.19.0
    • Component/s: None
    • Labels:
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      Description

      the biggest problem is that select * is assuming that the output is a regular text file. it can't read out from compressed text files. (which is what happens when we start using the output compression options).

      the core issue is that select * is special code. and it should not be. it should go through the same 'fileinputformat' and serde code that any map-side task goes through.

      the second issue is that a select * without any data transformations/filters goes through a map-reduce task unnecessarily. we need to fix this. this seems related to the limit N jira that ashish opened. (see hadoop-4086)

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              • Assignee:
                Unassigned
                Reporter:
                jsensarma Joydeep Sen Sarma
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                • Created:
                  Updated:
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