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[HIVE-4579] Create a SARG interface for RecordReaders
...I think we should create a SARG (http://en.wikipedia.org/wiki/Sargable) interface for RecordReaders. For a first pass, I'll create an API that uses the value stored in hive.io.filter.expr.se...
, 2013-08-14, 07:05
[HIVE-2849] Use the MapReduce output committer
...Currently Hive implements its own output committers based on the size of the files using regexes to parse out the task ids. The MapReduce output committers are very stable and use a two phas...
, 2013-08-14, 04:31
[HIVE-4990] ORC seeks fails with non-zero offset or column projection
...The ORC reader gets exceptions when seeking with non-zero offsets or column projection....
, 2013-08-11, 01:00
[HIVE-5050] Modify TestSearchArgumentImpl to using the API instead of serialized xml.
...The tests will be more resilient if we use the API rather than the serialized xml....
, 2013-08-10, 00:52
[HIVE-5030] have fetchoperator provide all of the partition directories to the input format
...For some custom input formats, it is convenient to be able to see all of the partition directories at once....
, 2013-08-09, 05:20
[HIVE-4724] ORC readers should have a better error detection for non-ORC files
...A customer loaded a text file into a table that is stored as ORC. The error message was very unfriendly....
, 2013-07-20, 19:31
[HIVE-4753] ORC indexes should include the length of the data to read
...ORC indexes should include the length of data that must be read in each stream for the rows associated with that entry....
, 2013-06-18, 22:43
[HIVE-4698] ORC's file footer should include the encodings of the columns
...To ensure that a reader won't get surprised by the column encodings in the stripes, it would be good to include the set of encodings for each column in the file footer....
, 2013-06-10, 21:23
[HIVE-4634] Add hasNull flag to ORC index
...It would help the predicate pushdown, if the index recorded whether each 10k rows had null values in that column....
, 2013-06-04, 23:01
[HIVE-4244] Make string dictionaries adaptive in ORC
...The ORC writer should adaptively switch between dictionary and direct encoding. I'd propose looking at the first 100,000 values in each column and decide whether there is sufficient loading ...
, 2013-05-17, 17:41
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