Github user jackylk commented on a diff in the pull request:
https://github.com/apache/incubator-carbondata/pull/229#discussion_r83033746
--- Diff:
processing/src/main/java/org/apache/carbondata/processing/newflow/iterators/CarbonArrayWritable.java
---
@@ -0,0 +1,51 @@
+package org.apache.carbondata.processing.newflow.iterators;
+
+import java.io.DataInput;
+import java.io.DataOutput;
+import java.io.IOException;
+import java.nio.charset.Charset;
+import java.util.Arrays;
+
+import org.apache.hadoop.io.Writable;
+
+/**
+ * It is hadoop's writable value wrapper.
+ */
+public class CarbonArrayWritable implements Writable {
--- End diff --
Why this is carbon-processing but not carbon-hadoop module? All hadoop
related class should be in carbon-hadoop module
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