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Liang-Chi Hsieh fee3438a32 [SPARK-8218][SQL] Add binary log math function 
JIRA: https://issues.apache.org/jira/browse/SPARK-8218

Because there is already `log` unary function defined, the binary log function is called `logarithm` for now.

Author: Liang-Chi Hsieh <viirya@gmail.com>

Closes #6725 from viirya/expr_binary_log and squashes the following commits:

bf96bd9 [Liang-Chi Hsieh] Compare log result in string.
102070d [Liang-Chi Hsieh] Round log result to better comparing in python test.
fd01863 [Liang-Chi Hsieh] For comments.
beed631 [Liang-Chi Hsieh] Merge remote-tracking branch 'upstream/master' into expr_binary_log
6089d11 [Liang-Chi Hsieh] Remove unnecessary override.
8cf37b7 [Liang-Chi Hsieh] For comments.
bc89597 [Liang-Chi Hsieh] For comments.
db7dc38 [Liang-Chi Hsieh] Use ctor instead of companion object.
0634ef7 [Liang-Chi Hsieh] Merge remote-tracking branch 'upstream/master' into expr_binary_log
1750034 [Liang-Chi Hsieh] Merge remote-tracking branch 'upstream/master' into expr_binary_log
3d75bfc [Liang-Chi Hsieh] Fix scala style.
5b39c02 [Liang-Chi Hsieh] Merge remote-tracking branch 'upstream/master' into expr_binary_log
23c54a3 [Liang-Chi Hsieh] Fix scala style.
ebc9929 [Liang-Chi Hsieh] Let Logarithm accept one parameter too.
605574d [Liang-Chi Hsieh] Merge remote-tracking branch 'upstream/master' into expr_binary_log
21c3bfd [Liang-Chi Hsieh] Fix scala style.
c6c187f [Liang-Chi Hsieh] For comments.
c795342 [Liang-Chi Hsieh] Merge remote-tracking branch 'upstream/master' into expr_binary_log
f373bac [Liang-Chi Hsieh] Add binary log expression.
2015-06-17 23:31:30 -07:00
..
ml [SPARK-7432] [MLLIB] fix flaky CrossValidator doctest 2015-06-02 08:51:00 -07:00
mllib [SPARK-7605] [MLLIB] [PYSPARK] Python API for ElementwiseProduct 2015-06-17 22:08:38 -07:00
sql [SPARK-8218][SQL] Add binary log math function 2015-06-17 23:31:30 -07:00
streaming [SPARK-2808] [STREAMING] [KAFKA] cleanup tests from 2015-06-07 21:42:45 +01:00
__init__.py [SPARK-4172] [PySpark] Progress API in Python 2015-02-17 13:36:43 -08:00
accumulators.py [SPARK-7899] [PYSPARK] Fix Python 3 pyspark/sql/types module conflict 2015-05-29 14:13:44 -07:00
broadcast.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
cloudpickle.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
conf.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
context.py [SPARK-8373] [PYSPARK] Add emptyRDD to pyspark and fix the issue when calling sum on an empty RDD 2015-06-17 13:59:39 -07:00
daemon.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
files.py [SPARK-3309] [PySpark] Put all public API in __all__ 2014-09-03 11:49:45 -07:00
heapq3.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
java_gateway.py [SPARK-6949] [SQL] [PySpark] Support Date/Timestamp in Column expression 2015-04-21 00:08:18 -07:00
join.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
profiler.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
rdd.py [SPARK-8373] [PYSPARK] Add emptyRDD to pyspark and fix the issue when calling sum on an empty RDD 2015-06-17 13:59:39 -07:00
rddsampler.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
resultiterable.py [SPARK-3074] [PySpark] support groupByKey() with single huge key 2015-04-09 17:07:23 -07:00
serializers.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
shell.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
shuffle.py [SPARK-7339] [PYSPARK] PySpark shuffle spill memory sometimes are not correct 2015-05-26 08:35:39 -07:00
statcounter.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
status.py [SPARK-4172] [PySpark] Progress API in Python 2015-02-17 13:36:43 -08:00
storagelevel.py [SPARK-3417] Use new-style classes in PySpark 2014-09-08 15:45:36 -07:00
tests.py [SPARK-8373] [PYSPARK] Add emptyRDD to pyspark and fix the issue when calling sum on an empty RDD 2015-06-17 13:59:39 -07:00
traceback_utils.py [SPARK-1087] Move python traceback utilities into new traceback_utils.py file. 2014-09-15 19:28:17 -07:00
worker.py [SPARK-6216] [PYSPARK] check python version of worker with driver 2015-05-18 12:55:13 -07:00