[SPARK-5944] [PySpark] fix version in Python API docs

use RELEASE_VERSION when building the Python API docs

Author: Davies Liu <davies@databricks.com>

Closes #4731 from davies/api_version and squashes the following commits:

c9744c9 [Davies Liu] Update create-release.sh
08cbc3f [Davies Liu] fix python docs

3 files changed, 8 insertions, 4 deletions

diff --git a/python/docs/conf.py b/python/docs/conf.py
index cbbf7ffb08..163987dd8e 100644
--- a/python/docs/conf.py
+++ b/python/docs/conf.py
@@ -48,16 +48,16 @@ master_doc = 'index'
 
 # General information about the project.
 project = u'PySpark'
-copyright = u'2014, Author'
+copyright = u''
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = '1.3-SNAPSHOT'
+version = 'master'
 # The full version, including alpha/beta/rc tags.
-release = '1.3-SNAPSHOT'
+release = os.environ.get('RELEASE_VERSION', version)
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/python/docs/pyspark.sql.rst b/python/docs/pyspark.sql.rst
index 2e3f69b9a5..6259379ed0 100644
--- a/python/docs/pyspark.sql.rst
+++ b/python/docs/pyspark.sql.rst
@@ -17,7 +17,7 @@ pyspark.sql.types module
 
 
 pyspark.sql.functions module
-------------------------
+----------------------------
 .. automodule:: pyspark.sql.functions
     :members:
     :undoc-members:
diff --git a/python/pyspark/rdd.py b/python/pyspark/rdd.py
index d3148de6f4..cb12fed98c 100644
--- a/python/pyspark/rdd.py
+++ b/python/pyspark/rdd.py
@@ -2111,6 +2111,7 @@ class RDD(object):
     def countApprox(self, timeout, confidence=0.95):
         """
         .. note:: Experimental
+
         Approximate version of count() that returns a potentially incomplete
         result within a timeout, even if not all tasks have finished.
 
@@ -2124,6 +2125,7 @@ class RDD(object):
     def sumApprox(self, timeout, confidence=0.95):
         """
         .. note:: Experimental
+
         Approximate operation to return the sum within a timeout
         or meet the confidence.
 
@@ -2140,6 +2142,7 @@ class RDD(object):
     def meanApprox(self, timeout, confidence=0.95):
         """
         .. note:: Experimental
+
         Approximate operation to return the mean within a timeout
         or meet the confidence.
 
@@ -2156,6 +2159,7 @@ class RDD(object):
     def countApproxDistinct(self, relativeSD=0.05):
         """
         .. note:: Experimental
+
         Return approximate number of distinct elements in the RDD.
 
         The algorithm used is based on streamlib's implementation of