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[HIVE-5159] Change the kind fields in ORC's proto file to optional
...Java's protobuf generated code uses a null value to represent enum values that were added after the reader was compiled. To reflect that reality, the enum values should always be marked as o...
, 2013-08-30, 21:42
[HIVE-4246] Implement predicate pushdown for ORC
...By using the push down predicates from the table scan operator, ORC can skip over 10,000 rows at a time that won't satisfy the predicate. This will help a lot, especially if the file is sort...
, 2013-08-16, 13:03
[HIVE-4245] Implement numeric dictionaries in ORC
...For many applications, especially in de-normalized data, there is a lot of redundancy in the numeric columns. Therefore, it would make sense to adaptively use dictionary encodings for numeri...
, 2013-08-14, 22:37
[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
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