change block size to 128MB
diff --git a/parquet-hadoop/src/main/java/parquet/hadoop/ParquetWriter.java b/parquet-hadoop/src/main/java/parquet/hadoop/ParquetWriter.java
index c813b67..a31d9e8 100644
--- a/parquet-hadoop/src/main/java/parquet/hadoop/ParquetWriter.java
+++ b/parquet-hadoop/src/main/java/parquet/hadoop/ParquetWriter.java
@@ -30,7 +30,7 @@
  */
 public class ParquetWriter<T> implements Closeable {
 
-  public static final int DEFAULT_BLOCK_SIZE = 256 * 1024 * 1024;
+  public static final int DEFAULT_BLOCK_SIZE = 128 * 1024 * 1024;
   public static final int DEFAULT_PAGE_SIZE = 1 * 1024 * 1024;
 
   private final InternalParquetRecordWriter<T> writer;