Github user amansinha100 commented on a diff in the pull request:
https://github.com/apache/drill/pull/430#discussion_r56899529
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/expr/fn/impl/HashHelper.java
---
@@ -17,47 +17,77 @@
*/
package org.apache.drill.exec.expr.fn.impl;
+import io.netty.buffer.DrillBuf;
+import org.apache.drill.common.config.DrillConfig;
+import org.apache.drill.common.exceptions.DrillConfigurationException;
+
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
-public class HashHelper {
+public abstract class HashHelper {
static final org.slf4j.Logger logger =
org.slf4j.LoggerFactory.getLogger(HashHelper.class);
+ public static final String defaultHashClassName = new
String("org.apache.drill.exec.expr.fn.impl.MurmurHash3");
+ static final String HASH_CLASS_PROP = "drill.exec.hash.class";
+ static String actualHashClassName = defaultHashClassName;
+ static DrillHash hashCall = new MurmurHash3();
+ static {
- /** taken from mahout **/
- public static int hash(ByteBuffer buf, int seed) {
--- End diff --
I think we should keep the mahout hash function for future use...
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