[SNAPPYDATA] MemoryStore changes for snappydata

Author: Sumedh Wale

core/src/main/scala/org/apache/spark/storage/memory/MemoryStore.scala

@@ -762,6 +762,9 @@ private[storage] class PartiallyUnrolledIterator[T](
   override def next(): T = {
     if (unrolled == null || !unrolled.hasNext) {
       rest.next()
+    } else if (!unrolled.hasNext) {
+      releaseUnrollMemory()
+      rest.next
     } else {
       unrolled.next()
     }

sql/catalyst/.gitignore

@@ -0,0 +1 @@
+src/generated/antlr4