Author: jbellis
Date: Tue Jun 15 18:02:53 2010
New Revision: 954988
URL: http://svn.apache.org/viewvc?rev=954988&view=rev
Log:
update RAS javadoc to clarify that only the 3rd replica actually cares about
rack placement. patch by jbellis
Modified:
cassandra/trunk/src/java/org/apache/cassandra/locator/RackAwareStrategy.java
Modified:
cassandra/trunk/src/java/org/apache/cassandra/locator/RackAwareStrategy.java
URL:
http://svn.apache.org/viewvc/cassandra/trunk/src/java/org/apache/cassandra/locator/RackAwareStrategy.java?rev=954988&r1=954987&r2=954988&view=diff
==============================================================================
---
cassandra/trunk/src/java/org/apache/cassandra/locator/RackAwareStrategy.java
(original)
+++
cassandra/trunk/src/java/org/apache/cassandra/locator/RackAwareStrategy.java
Tue Jun 15 18:02:53 2010
@@ -25,12 +25,12 @@ import java.util.*;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.dht.Token;
-/*
+/**
* This Replication Strategy returns the nodes responsible for a given
* key but respects rack awareness. It places one replica in a
* different data center from the first (if there is any such data center),
- * and remaining replicas in different racks in the same datacenter as
- * the first.
+ * the third replica in a different rack in the first datacenter, and
+ * any remaining replicas on the first unused nodes on the ring.
*/
public class RackAwareStrategy extends AbstractReplicationStrategy
{
