remove waste duplicated code

Author: giwa

python/pyspark/streaming/dstream.py

@@ -17,7 +17,6 @@
 
 from collections import defaultdict
 from itertools import chain, ifilter, imap
-import time
 import operator
 
 from pyspark.serializers import NoOpSerializer,\
@@ -246,8 +245,6 @@ def takeAndPrint(rdd, time):
             taken = rdd.take(11)
             print "-------------------------------------------"
             print "Time: %s" % (str(time))
-            print rdd.glom().collect()
-            print "-------------------------------------------"
             print "-------------------------------------------"
             for record in taken[:10]:
                 print record
@@ -447,6 +444,7 @@ def pipeline_func(split, iterator):
             self._prev_jdstream = prev._prev_jdstream  # maintain the pipeline
             self._prev_jrdd_deserializer = prev._prev_jrdd_deserializer
         self.is_cached = False
+        self.is_checkpointed = False
         self._ssc = prev._ssc
         self.ctx = prev.ctx
         self.prev = prev
@@ -483,4 +481,4 @@ def _jdstream(self):
         return self._jdstream_val
 
     def _is_pipelinable(self):
-        return not self.is_cached
+        return not (self.is_cached or self.is_checkpointed)