SPARK-18252: Fixing RAT style errors

Author: ponkin

common/sketch/src/main/java/org/apache/spark/util/sketch/BloomFilter.java

@@ -233,4 +233,4 @@ public static BloomFilter create(long expectedNumItems, long numBits) {
 
     return new BloomFilterImpl(optimalNumOfHashFunctions(expectedNumItems, numBits), numBits);
   }
-}
+}

common/sketch/src/main/java/org/apache/spark/util/sketch/BloomFilterImpl.java

@@ -253,4 +253,4 @@ private void writeObject(ObjectOutputStream out) throws IOException {
   private void readObject(ObjectInputStream in) throws IOException {
     readFrom0(in);
   }
-}
+}

common/sketch/src/main/java/org/apache/spark/util/sketch/Murmur3_128.java

@@ -147,4 +147,4 @@ private static long mixK2(long k2) {
     k2 *= C1;
     return k2;
   }
-}
+}

common/sketch/src/test/java/org/apache/spark/util/sketch/Murmur3_128Suite.java

@@ -47,4 +47,4 @@ private static void assertHash(int seed, long expected1, long expected2, String
     Assert.assertEquals(expected1, hash128bit[0]);
     Assert.assertEquals(expected2, hash128bit[1]);
   }
-}
+}

common/sketch/src/test/scala/org/apache/spark/util/sketch/BloomFilterSuite.scala

@@ -130,11 +130,7 @@ class BloomFilterSuite extends FunSuite { // scalastyle:ignore funsuite
     }
   }
 
-  /**
-    * Instead of random generator we can check
-    * BloomFilter for every Byte value
-    * since it has only 256 values
-    */
+  // Separate test for Byte type, since we can enumerate all possible values
   test(s"accuracy - Byte") {
     // Byte is from -128 to 127 inclusive
     val allBytes = (-128 to 127).map(_.toByte)
@@ -162,10 +158,7 @@ class BloomFilterSuite extends FunSuite { // scalastyle:ignore funsuite
     checkSerDe(filter)
   }
 
-  /**
-    * Separate test for Byte type,
-    * Since we can enumerate all possible values
-    */
+  // Separate test for Byte type, since we can enumerate all possible values
   test(s"mergeInPlace - Byte") {
     val allBytes = (-128 to 127).map(_.toByte)
     val fpp = 0.05
@@ -191,4 +184,4 @@ class BloomFilterSuite extends FunSuite { // scalastyle:ignore funsuite
 
     checkSerDe(filter1)
   }
-}
+}

common/sketch/src/test/scala/org/apache/spark/util/sketch/RoaringBitmapArraySuite.scala

@@ -65,4 +65,4 @@ class RoaringBitmapArraySuite extends FunSuite { // scalastyle:ignore funsuite
     indexes2.foreach(i => assert(bitArray1.get(i)))
     assert(bitArray1.cardinality() == (indexes1 ++ indexes2).distinct.length)
   }
-}
+}