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Posted to commits@cassandra.apache.org by gd...@apache.org on 2010/02/04 16:21:33 UTC

svn commit: r906521 [3/3] - in /incubator/cassandra/trunk: ./ conf/ contrib/circuit/src/org/apache/cassandra/contrib/circuit/ src/java/org/apache/cassandra/client/ src/java/org/apache/cassandra/config/ src/java/org/apache/cassandra/db/ src/java/org/apa...

Modified: incubator/cassandra/trunk/test/unit/org/apache/cassandra/service/MoveTest.java
URL: http://svn.apache.org/viewvc/incubator/cassandra/trunk/test/unit/org/apache/cassandra/service/MoveTest.java?rev=906521&r1=906520&r2=906521&view=diff
==============================================================================
--- incubator/cassandra/trunk/test/unit/org/apache/cassandra/service/MoveTest.java (original)
+++ incubator/cassandra/trunk/test/unit/org/apache/cassandra/service/MoveTest.java Thu Feb  4 15:21:31 2010
@@ -24,8 +24,13 @@
 import java.net.InetAddress;
 import java.net.UnknownHostException;
 
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
+import org.apache.cassandra.config.DatabaseDescriptor;
+import org.apache.commons.lang.StringUtils;
 import org.junit.Test;
 import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 
 import org.apache.cassandra.dht.IPartitioner;
@@ -40,6 +45,16 @@
 
 public class MoveTest
 {
+    // handy way of creating a mapping of strategies to use in StorageService.
+    private static Map<String, AbstractReplicationStrategy> createReplacements(AbstractReplicationStrategy strat)
+    {
+        Map<String, AbstractReplicationStrategy> replacements = new HashMap<String, AbstractReplicationStrategy>();
+        for (String table : DatabaseDescriptor.getTables())
+            replacements.put(table, strat);
+        return replacements;
+    }
+
+
     /**
      * Test whether write endpoints is correct when the node is leaving. Uses
      * StorageService.onChange and does not manipulate token metadata directly.
@@ -48,53 +63,74 @@
     public void testWriteEndPointsDuringLeave() throws UnknownHostException
     {
         StorageService ss = StorageService.instance;
+        final int RING_SIZE = 5;
+        final int LEAVING_NODE = 2;
 
         TokenMetadata tmd = ss.getTokenMetadata();
         tmd.clearUnsafe();
         IPartitioner partitioner = new RandomPartitioner();
-        AbstractReplicationStrategy testStrategy = new RackUnawareStrategy(tmd, 3);
+        AbstractReplicationStrategy testStrategy = new RackUnawareStrategy(tmd, null);
 
         IPartitioner oldPartitioner = ss.setPartitionerUnsafe(partitioner);
-        AbstractReplicationStrategy oldStrategy = ss.setReplicationStrategyUnsafe(testStrategy);
+        Map<String, AbstractReplicationStrategy> oldStrategies = ss.setReplicationStrategyUnsafe(createReplacements(testStrategy));
 
         ArrayList<Token> endPointTokens = new ArrayList<Token>();
         ArrayList<Token> keyTokens = new ArrayList<Token>();
         List<InetAddress> hosts = new ArrayList<InetAddress>();
 
-        createInitialRing(ss, partitioner, endPointTokens, keyTokens, hosts, 5);
+        createInitialRing(ss, partitioner, endPointTokens, keyTokens, hosts, RING_SIZE);
 
+        final Map<String, List<Range>> deadNodesRanges = new HashMap<String, List<Range>>();
+        for (String table : DatabaseDescriptor.getNonSystemTables())
+        {
+            List<Range> list = new ArrayList<Range>();
+            list.addAll(testStrategy.getAddressRanges(table).get(hosts.get(LEAVING_NODE)));
+            Collections.sort(list);
+            deadNodesRanges.put(table, list);
+        }
+        
         // Third node leaves
-        ss.onChange(hosts.get(2), StorageService.MOVE_STATE, new ApplicationState(StorageService.STATE_LEAVING + StorageService.Delimiter + partitioner.getTokenFactory().toString(endPointTokens.get(2))));
+        ss.onChange(hosts.get(LEAVING_NODE), StorageService.MOVE_STATE, new ApplicationState(StorageService.STATE_LEAVING + StorageService.Delimiter + partitioner.getTokenFactory().toString(endPointTokens.get(LEAVING_NODE))));
 
         // check that it is correctly marked as leaving in tmd
-        assertTrue(tmd.isLeaving(hosts.get(2)));
+        assertTrue(tmd.isLeaving(hosts.get(LEAVING_NODE)));
 
         // check that pending ranges are correct (primary range should go to 1st node, first
         // replica range to 4th node and 2nd replica range to 5th node)
-        assertTrue(tmd.getPendingRanges(hosts.get(0)).get(0).equals(new Range(endPointTokens.get(1),
-                                                                              endPointTokens.get(2))));
-        assertTrue(tmd.getPendingRanges(hosts.get(3)).get(0).equals(new Range(endPointTokens.get(4),
-                                                                              endPointTokens.get(0))));
-        assertTrue(tmd.getPendingRanges(hosts.get(4)).get(0).equals(new Range(endPointTokens.get(0),
-                                                                              endPointTokens.get(1))));
-
-        for (int i=0; i<keyTokens.size(); ++i)
+        for (String table : DatabaseDescriptor.getNonSystemTables())
         {
-            Collection<InetAddress> endPoints = testStrategy.getWriteEndpoints(keyTokens.get(i), testStrategy.getNaturalEndpoints(keyTokens.get(i)));
+            int replicationFactor = DatabaseDescriptor.getReplicationFactor(table);
 
-            // Original third node does not store replicas for 4th and 5th node (ranges 20-30
-            // and 30-40 respectively), so their write endpoints count should be still 3. The
-            // third node stores data for ranges 40-0, 0-10 and 10-20, so writes falling to
-            // these ranges should have four endpoints now. keyTokens[2] is 25 and keyTokens[3]
-            // is 35, so these are the ones that should have 3 endpoints.
-            if (i==2 || i==3)
-                assertTrue(endPoints.size() == 3);
-            else
-                assertTrue(endPoints.size() == 4);
+            // if the ring minus the leaving node leaves us with less than RF, we're hosed.
+            if (hosts.size()-1 < replicationFactor)
+                continue;
+            
+            // verify that the replicationFactor nodes after the leaving node are gatherings it's pending ranges.
+            // in the case where rf==5, we're screwed because we basically just lost data.
+            for (int i = 0; i < replicationFactor; i++)
+            {
+                assertTrue(tmd.getPendingRanges(table, hosts.get((LEAVING_NODE + 1 + i) % RING_SIZE)).size() > 0);
+                assertEquals(tmd.getPendingRanges(table, hosts.get((LEAVING_NODE + 1 + i) % RING_SIZE)).get(0), deadNodesRanges.get(table).get(i));
+            }
+
+            // note that we're iterating over nodes and sample tokens.
+            final int replicaStart = (LEAVING_NODE-replicationFactor+RING_SIZE)%RING_SIZE;
+            for (int i=0; i<keyTokens.size(); ++i)
+            {
+                Collection<InetAddress> endPoints = testStrategy.getWriteEndpoints(keyTokens.get(i), table, testStrategy.getNaturalEndpoints(keyTokens.get(i), table));
+                // figure out if this node is one of the nodes previous to the failed node (2).
+                boolean isReplica = (i - replicaStart + RING_SIZE) % RING_SIZE < replicationFactor;
+                // the preceeding leaving_node-replication_factor nodes should have and additional ep (replication_factor+1);
+                if (isReplica)
+                    assertTrue(endPoints.size() == replicationFactor + 1);
+                else
+                    assertTrue(endPoints.size() == replicationFactor);
+
+            }
         }
 
         ss.setPartitionerUnsafe(oldPartitioner);
-        ss.setReplicationStrategyUnsafe(oldStrategy);
+        ss.setReplicationStrategyUnsafe(oldStrategies);
     }
 
     /**
@@ -105,25 +141,26 @@
     public void testSimultaneousMove() throws UnknownHostException
     {
         StorageService ss = StorageService.instance;
+        final int RING_SIZE = 10;
         TokenMetadata tmd = ss.getTokenMetadata();
         tmd.clearUnsafe();
         IPartitioner partitioner = new RandomPartitioner();
-        AbstractReplicationStrategy testStrategy = new RackUnawareStrategy(tmd, 3);
+        AbstractReplicationStrategy testStrategy = new RackUnawareStrategy(tmd, null);
 
         IPartitioner oldPartitioner = ss.setPartitionerUnsafe(partitioner);
-        AbstractReplicationStrategy oldStrategy = ss.setReplicationStrategyUnsafe(testStrategy);
+        Map<String, AbstractReplicationStrategy> oldStrategy = ss.setReplicationStrategyUnsafe(createReplacements(testStrategy));
 
         ArrayList<Token> endPointTokens = new ArrayList<Token>();
         ArrayList<Token> keyTokens = new ArrayList<Token>();
         List<InetAddress> hosts = new ArrayList<InetAddress>();
 
         // create a ring or 10 nodes
-        createInitialRing(ss, partitioner, endPointTokens, keyTokens, hosts, 10);
+        createInitialRing(ss, partitioner, endPointTokens, keyTokens, hosts, RING_SIZE);
 
         // nodes 6, 8 and 9 leave
-        ss.onChange(hosts.get(6), StorageService.MOVE_STATE, new ApplicationState(StorageService.STATE_LEAVING + StorageService.Delimiter + partitioner.getTokenFactory().toString(endPointTokens.get(6))));
-        ss.onChange(hosts.get(8), StorageService.MOVE_STATE, new ApplicationState(StorageService.STATE_LEAVING + StorageService.Delimiter + partitioner.getTokenFactory().toString(endPointTokens.get(8))));
-        ss.onChange(hosts.get(9), StorageService.MOVE_STATE, new ApplicationState(StorageService.STATE_LEAVING + StorageService.Delimiter + partitioner.getTokenFactory().toString(endPointTokens.get(9))));
+        final int[] LEAVING = new int[] { 6, 8, 9};
+        for (int leaving : LEAVING)
+            ss.onChange(hosts.get(leaving), StorageService.MOVE_STATE, new ApplicationState(StorageService.STATE_LEAVING + StorageService.Delimiter + partitioner.getTokenFactory().toString(endPointTokens.get(leaving))));
         
         // boot two new nodes with keyTokens.get(5) and keyTokens.get(7)
         InetAddress boot1 = InetAddress.getByName("127.0.1.1");
@@ -133,151 +170,245 @@
 
         Collection<InetAddress> endPoints = null;
 
-        // tokens 5, 15 and 25 should go three nodes
-        for (int i=0; i<3; ++i)
+        // pre-calculate the results.
+        Map<String, Multimap<Token, InetAddress>> expectedEndpoints = new HashMap<String, Multimap<Token, InetAddress>>();
+        expectedEndpoints.put("Keyspace1", HashMultimap.<Token, InetAddress>create());
+        expectedEndpoints.get("Keyspace1").putAll(new BigIntegerToken("5"), makeAddrs("127.0.0.2"));
+        expectedEndpoints.get("Keyspace1").putAll(new BigIntegerToken("15"), makeAddrs("127.0.0.3"));
+        expectedEndpoints.get("Keyspace1").putAll(new BigIntegerToken("25"), makeAddrs("127.0.0.4"));
+        expectedEndpoints.get("Keyspace1").putAll(new BigIntegerToken("35"), makeAddrs("127.0.0.5"));
+        expectedEndpoints.get("Keyspace1").putAll(new BigIntegerToken("45"), makeAddrs("127.0.0.6"));
+        expectedEndpoints.get("Keyspace1").putAll(new BigIntegerToken("55"), makeAddrs("127.0.0.7", "127.0.0.8", "127.0.1.1"));
+        expectedEndpoints.get("Keyspace1").putAll(new BigIntegerToken("65"), makeAddrs("127.0.0.8"));
+        expectedEndpoints.get("Keyspace1").putAll(new BigIntegerToken("75"), makeAddrs("127.0.0.9", "127.0.1.2", "127.0.0.1"));
+        expectedEndpoints.get("Keyspace1").putAll(new BigIntegerToken("85"), makeAddrs("127.0.0.10", "127.0.0.1"));
+        expectedEndpoints.get("Keyspace1").putAll(new BigIntegerToken("95"), makeAddrs("127.0.0.1"));
+        expectedEndpoints.put("Keyspace2", HashMultimap.<Token, InetAddress>create());
+        expectedEndpoints.get("Keyspace2").putAll(new BigIntegerToken("5"), makeAddrs("127.0.0.2"));
+        expectedEndpoints.get("Keyspace2").putAll(new BigIntegerToken("15"), makeAddrs("127.0.0.3"));
+        expectedEndpoints.get("Keyspace2").putAll(new BigIntegerToken("25"), makeAddrs("127.0.0.4"));
+        expectedEndpoints.get("Keyspace2").putAll(new BigIntegerToken("35"), makeAddrs("127.0.0.5"));
+        expectedEndpoints.get("Keyspace2").putAll(new BigIntegerToken("45"), makeAddrs("127.0.0.6"));
+        expectedEndpoints.get("Keyspace2").putAll(new BigIntegerToken("55"), makeAddrs("127.0.0.7", "127.0.0.8", "127.0.1.1"));
+        expectedEndpoints.get("Keyspace2").putAll(new BigIntegerToken("65"), makeAddrs("127.0.0.8"));
+        expectedEndpoints.get("Keyspace2").putAll(new BigIntegerToken("75"), makeAddrs("127.0.0.9", "127.0.1.2", "127.0.0.1"));
+        expectedEndpoints.get("Keyspace2").putAll(new BigIntegerToken("85"), makeAddrs("127.0.0.10", "127.0.0.1"));
+        expectedEndpoints.get("Keyspace2").putAll(new BigIntegerToken("95"), makeAddrs("127.0.0.1"));
+        expectedEndpoints.put("Keyspace3", HashMultimap.<Token, InetAddress>create());
+        expectedEndpoints.get("Keyspace3").putAll(new BigIntegerToken("5"), makeAddrs("127.0.0.2", "127.0.0.3", "127.0.0.4", "127.0.0.5", "127.0.0.6"));
+        expectedEndpoints.get("Keyspace3").putAll(new BigIntegerToken("15"), makeAddrs("127.0.0.3", "127.0.0.4", "127.0.0.5", "127.0.0.6", "127.0.0.7", "127.0.1.1", "127.0.0.8"));
+        expectedEndpoints.get("Keyspace3").putAll(new BigIntegerToken("25"), makeAddrs("127.0.0.4", "127.0.0.5", "127.0.0.6", "127.0.0.7", "127.0.0.8", "127.0.1.2", "127.0.0.1", "127.0.1.1"));
+        expectedEndpoints.get("Keyspace3").putAll(new BigIntegerToken("35"), makeAddrs("127.0.0.5", "127.0.0.6", "127.0.0.7", "127.0.0.8", "127.0.0.9", "127.0.1.2", "127.0.0.1", "127.0.0.2", "127.0.1.1"));
+        expectedEndpoints.get("Keyspace3").putAll(new BigIntegerToken("45"), makeAddrs("127.0.0.6", "127.0.0.7", "127.0.0.8", "127.0.0.9", "127.0.0.10", "127.0.1.2", "127.0.0.1", "127.0.0.2", "127.0.1.1", "127.0.0.3"));
+        expectedEndpoints.get("Keyspace3").putAll(new BigIntegerToken("55"), makeAddrs("127.0.0.7", "127.0.0.8", "127.0.0.9", "127.0.0.10", "127.0.0.1", "127.0.0.2", "127.0.0.3", "127.0.0.4", "127.0.1.1", "127.0.1.2"));
+        expectedEndpoints.get("Keyspace3").putAll(new BigIntegerToken("65"), makeAddrs("127.0.0.8", "127.0.0.9", "127.0.0.10", "127.0.0.1", "127.0.0.2", "127.0.1.2", "127.0.0.3", "127.0.0.4"));
+        expectedEndpoints.get("Keyspace3").putAll(new BigIntegerToken("75"), makeAddrs("127.0.0.9", "127.0.0.10", "127.0.0.1", "127.0.0.2", "127.0.0.3", "127.0.1.2", "127.0.0.4", "127.0.0.5"));
+        expectedEndpoints.get("Keyspace3").putAll(new BigIntegerToken("85"), makeAddrs("127.0.0.10", "127.0.0.1", "127.0.0.2", "127.0.0.3", "127.0.0.4", "127.0.0.5"));
+        expectedEndpoints.get("Keyspace3").putAll(new BigIntegerToken("95"), makeAddrs("127.0.0.1", "127.0.0.2", "127.0.0.3", "127.0.0.4", "127.0.0.5"));
+        expectedEndpoints.put("Keyspace4", HashMultimap.<Token, InetAddress>create());
+        expectedEndpoints.get("Keyspace4").putAll(new BigIntegerToken("5"), makeAddrs("127.0.0.2", "127.0.0.3", "127.0.0.4"));
+        expectedEndpoints.get("Keyspace4").putAll(new BigIntegerToken("15"), makeAddrs("127.0.0.3", "127.0.0.4", "127.0.0.5"));
+        expectedEndpoints.get("Keyspace4").putAll(new BigIntegerToken("25"), makeAddrs("127.0.0.4", "127.0.0.5", "127.0.0.6"));
+        expectedEndpoints.get("Keyspace4").putAll(new BigIntegerToken("35"), makeAddrs("127.0.0.5", "127.0.0.6", "127.0.0.7", "127.0.1.1", "127.0.0.8"));
+        expectedEndpoints.get("Keyspace4").putAll(new BigIntegerToken("45"), makeAddrs("127.0.0.6", "127.0.0.7", "127.0.0.8", "127.0.1.2", "127.0.0.1", "127.0.1.1"));
+        expectedEndpoints.get("Keyspace4").putAll(new BigIntegerToken("55"), makeAddrs("127.0.0.7", "127.0.0.8", "127.0.0.9", "127.0.0.1", "127.0.0.2", "127.0.1.1", "127.0.1.2"));
+        expectedEndpoints.get("Keyspace4").putAll(new BigIntegerToken("65"), makeAddrs("127.0.0.8", "127.0.0.9", "127.0.0.10", "127.0.1.2", "127.0.0.1", "127.0.0.2"));
+        expectedEndpoints.get("Keyspace4").putAll(new BigIntegerToken("75"), makeAddrs("127.0.0.9", "127.0.0.10", "127.0.0.1", "127.0.1.2", "127.0.0.2", "127.0.0.3"));
+        expectedEndpoints.get("Keyspace4").putAll(new BigIntegerToken("85"), makeAddrs("127.0.0.10", "127.0.0.1", "127.0.0.2", "127.0.0.3"));
+        expectedEndpoints.get("Keyspace4").putAll(new BigIntegerToken("95"), makeAddrs("127.0.0.1", "127.0.0.2", "127.0.0.3"));
+
+        for (String table : DatabaseDescriptor.getNonSystemTables())
         {
-            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(i), testStrategy.getNaturalEndpoints(keyTokens.get(i)));
+            for (int i = 0; i < keyTokens.size(); i++)
+            {
+                endPoints = testStrategy.getWriteEndpoints(keyTokens.get(i), table, testStrategy.getNaturalEndpoints(keyTokens.get(i), table));
+                assertTrue(expectedEndpoints.get(table).get(keyTokens.get(i)).size() == endPoints.size());
+                assertTrue(expectedEndpoints.get(table).get(keyTokens.get(i)).containsAll(endPoints));
+            }
+
+            // just to be sure that things still work according to the old tests, run them:
+            if (DatabaseDescriptor.getReplicationFactor(table) != 3)
+                continue;
+            // tokens 5, 15 and 25 should go three nodes
+            for (int i=0; i<3; ++i)
+            {
+                endPoints = testStrategy.getWriteEndpoints(keyTokens.get(i), table, testStrategy.getNaturalEndpoints(keyTokens.get(i), table));
+                assertTrue(endPoints.size() == 3);
+                assertTrue(endPoints.contains(hosts.get(i+1)));
+                assertTrue(endPoints.contains(hosts.get(i+2)));
+                assertTrue(endPoints.contains(hosts.get(i+3)));
+            }
+
+            // token 35 should go to nodes 4, 5, 6, 7 and boot1
+            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(3), table, testStrategy.getNaturalEndpoints(keyTokens.get(3), table));
+            assertTrue(endPoints.size() == 5);
+            assertTrue(endPoints.contains(hosts.get(4)));
+            assertTrue(endPoints.contains(hosts.get(5)));
+            assertTrue(endPoints.contains(hosts.get(6)));
+            assertTrue(endPoints.contains(hosts.get(7)));
+            assertTrue(endPoints.contains(boot1));
+
+            // token 45 should go to nodes 5, 6, 7, 0, boot1 and boot2
+            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(4), table, testStrategy.getNaturalEndpoints(keyTokens.get(4), table));
+            assertTrue(endPoints.size() == 6);
+            assertTrue(endPoints.contains(hosts.get(5)));
+            assertTrue(endPoints.contains(hosts.get(6)));
+            assertTrue(endPoints.contains(hosts.get(7)));
+            assertTrue(endPoints.contains(hosts.get(0)));
+            assertTrue(endPoints.contains(boot1));
+            assertTrue(endPoints.contains(boot2));
+
+            // token 55 should go to nodes 6, 7, 8, 0, 1, boot1 and boot2
+            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(5), table, testStrategy.getNaturalEndpoints(keyTokens.get(5), table));
+            assertTrue(endPoints.size() == 7);
+            assertTrue(endPoints.contains(hosts.get(6)));
+            assertTrue(endPoints.contains(hosts.get(7)));
+            assertTrue(endPoints.contains(hosts.get(8)));
+            assertTrue(endPoints.contains(hosts.get(0)));
+            assertTrue(endPoints.contains(hosts.get(1)));
+            assertTrue(endPoints.contains(boot1));
+            assertTrue(endPoints.contains(boot2));
+
+            // token 65 should go to nodes 7, 8, 9, 0, 1 and boot2
+            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(6), table, testStrategy.getNaturalEndpoints(keyTokens.get(6), table));
+            assertTrue(endPoints.size() == 6);
+            assertTrue(endPoints.contains(hosts.get(7)));
+            assertTrue(endPoints.contains(hosts.get(8)));
+            assertTrue(endPoints.contains(hosts.get(9)));
+            assertTrue(endPoints.contains(hosts.get(0)));
+            assertTrue(endPoints.contains(hosts.get(1)));
+            assertTrue(endPoints.contains(boot2));
+
+            // token 75 should to go nodes 8, 9, 0, 1, 2 and boot2
+            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(7), table, testStrategy.getNaturalEndpoints(keyTokens.get(7), table));
+            assertTrue(endPoints.size() == 6);
+            assertTrue(endPoints.contains(hosts.get(8)));
+            assertTrue(endPoints.contains(hosts.get(9)));
+            assertTrue(endPoints.contains(hosts.get(0)));
+            assertTrue(endPoints.contains(hosts.get(1)));
+            assertTrue(endPoints.contains(hosts.get(2)));
+            assertTrue(endPoints.contains(boot2));
+
+            // token 85 should go to nodes 9, 0, 1 and 2
+            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(8), table, testStrategy.getNaturalEndpoints(keyTokens.get(8), table));
+            assertTrue(endPoints.size() == 4);
+            assertTrue(endPoints.contains(hosts.get(9)));
+            assertTrue(endPoints.contains(hosts.get(0)));
+            assertTrue(endPoints.contains(hosts.get(1)));
+            assertTrue(endPoints.contains(hosts.get(2)));
+
+            // token 95 should go to nodes 0, 1 and 2
+            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(9), table, testStrategy.getNaturalEndpoints(keyTokens.get(9), table));
             assertTrue(endPoints.size() == 3);
-            assertTrue(endPoints.contains(hosts.get(i+1)));
-            assertTrue(endPoints.contains(hosts.get(i+2)));
-            assertTrue(endPoints.contains(hosts.get(i+3)));
-        }
+            assertTrue(endPoints.contains(hosts.get(0)));
+            assertTrue(endPoints.contains(hosts.get(1)));
+            assertTrue(endPoints.contains(hosts.get(2)));
 
-        // token 35 should go to nodes 4, 5, 6, 7 and boot1
-        endPoints = testStrategy.getWriteEndpoints(keyTokens.get(3), testStrategy.getNaturalEndpoints(keyTokens.get(3)));
-        assertTrue(endPoints.size() == 5);
-        assertTrue(endPoints.contains(hosts.get(4)));
-        assertTrue(endPoints.contains(hosts.get(5)));
-        assertTrue(endPoints.contains(hosts.get(6)));
-        assertTrue(endPoints.contains(hosts.get(7)));
-        assertTrue(endPoints.contains(boot1));
-
-        // token 45 should go to nodes 5, 6, 7, 0, boot1 and boot2
-        endPoints = testStrategy.getWriteEndpoints(keyTokens.get(4), testStrategy.getNaturalEndpoints(keyTokens.get(4)));
-        assertTrue(endPoints.size() == 6);
-        assertTrue(endPoints.contains(hosts.get(5)));
-        assertTrue(endPoints.contains(hosts.get(6)));
-        assertTrue(endPoints.contains(hosts.get(7)));
-        assertTrue(endPoints.contains(hosts.get(0)));
-        assertTrue(endPoints.contains(boot1));
-        assertTrue(endPoints.contains(boot2));
-
-        // token 55 should go to nodes 6, 7, 8, 0, 1, boot1 and boot2
-        endPoints = testStrategy.getWriteEndpoints(keyTokens.get(5), testStrategy.getNaturalEndpoints(keyTokens.get(5)));
-        assertTrue(endPoints.size() == 7);
-        assertTrue(endPoints.contains(hosts.get(6)));
-        assertTrue(endPoints.contains(hosts.get(7)));
-        assertTrue(endPoints.contains(hosts.get(8)));
-        assertTrue(endPoints.contains(hosts.get(0)));
-        assertTrue(endPoints.contains(hosts.get(1)));
-        assertTrue(endPoints.contains(boot1));
-        assertTrue(endPoints.contains(boot2));
-
-        // token 65 should go to nodes 7, 8, 9, 0, 1 and boot2
-        endPoints = testStrategy.getWriteEndpoints(keyTokens.get(6), testStrategy.getNaturalEndpoints(keyTokens.get(6)));
-        assertTrue(endPoints.size() == 6);
-        assertTrue(endPoints.contains(hosts.get(7)));
-        assertTrue(endPoints.contains(hosts.get(8)));
-        assertTrue(endPoints.contains(hosts.get(9)));
-        assertTrue(endPoints.contains(hosts.get(0)));
-        assertTrue(endPoints.contains(hosts.get(1)));
-        assertTrue(endPoints.contains(boot2));
-
-        // token 75 should to go nodes 8, 9, 0, 1, 2 and boot2
-        endPoints = testStrategy.getWriteEndpoints(keyTokens.get(7), testStrategy.getNaturalEndpoints(keyTokens.get(7)));
-        assertTrue(endPoints.size() == 6);
-        assertTrue(endPoints.contains(hosts.get(8)));
-        assertTrue(endPoints.contains(hosts.get(9)));
-        assertTrue(endPoints.contains(hosts.get(0)));
-        assertTrue(endPoints.contains(hosts.get(1)));
-        assertTrue(endPoints.contains(hosts.get(2)));
-        assertTrue(endPoints.contains(boot2));
-
-        // token 85 should go to nodes 9, 0, 1 and 2
-        endPoints = testStrategy.getWriteEndpoints(keyTokens.get(8), testStrategy.getNaturalEndpoints(keyTokens.get(8)));
-        assertTrue(endPoints.size() == 4);
-        assertTrue(endPoints.contains(hosts.get(9)));
-        assertTrue(endPoints.contains(hosts.get(0)));
-        assertTrue(endPoints.contains(hosts.get(1)));
-        assertTrue(endPoints.contains(hosts.get(2)));
-
-        // token 95 should go to nodes 0, 1 and 2
-        endPoints = testStrategy.getWriteEndpoints(keyTokens.get(9), testStrategy.getNaturalEndpoints(keyTokens.get(9)));
-        assertTrue(endPoints.size() == 3);
-        assertTrue(endPoints.contains(hosts.get(0)));
-        assertTrue(endPoints.contains(hosts.get(1)));
-        assertTrue(endPoints.contains(hosts.get(2)));
+        }
 
         // Now finish node 6 and node 9 leaving, as well as boot1 (after this node 8 is still
         // leaving and boot2 in progress
-        ss.onChange(hosts.get(6), StorageService.MOVE_STATE, new ApplicationState(StorageService.STATE_LEFT + StorageService.Delimiter + StorageService.LEFT_NORMALLY + StorageService.Delimiter + partitioner.getTokenFactory().toString(endPointTokens.get(6))));
-        ss.onChange(hosts.get(9), StorageService.MOVE_STATE, new ApplicationState(StorageService.STATE_LEFT + StorageService.Delimiter + StorageService.LEFT_NORMALLY + StorageService.Delimiter + partitioner.getTokenFactory().toString(endPointTokens.get(9))));
+        ss.onChange(hosts.get(LEAVING[0]), StorageService.MOVE_STATE, new ApplicationState(StorageService.STATE_LEFT + StorageService.Delimiter + StorageService.LEFT_NORMALLY + StorageService.Delimiter + partitioner.getTokenFactory().toString(endPointTokens.get(LEAVING[0]))));
+        ss.onChange(hosts.get(LEAVING[2]), StorageService.MOVE_STATE, new ApplicationState(StorageService.STATE_LEFT + StorageService.Delimiter + StorageService.LEFT_NORMALLY + StorageService.Delimiter + partitioner.getTokenFactory().toString(endPointTokens.get(LEAVING[2]))));
         ss.onChange(boot1, StorageService.MOVE_STATE, new ApplicationState(StorageService.STATE_NORMAL + StorageService.Delimiter + partitioner.getTokenFactory().toString(keyTokens.get(5))));
 
-        // tokens 5, 15 and 25 should go three nodes
-        for (int i=0; i<3; ++i)
+        // adjust precalcuated results.  this changes what the epected endpoints are.
+        expectedEndpoints.get("Keyspace1").get(new BigIntegerToken("55")).removeAll(makeAddrs("127.0.0.7", "127.0.0.8"));
+        expectedEndpoints.get("Keyspace1").get(new BigIntegerToken("85")).removeAll(makeAddrs("127.0.0.10"));
+        expectedEndpoints.get("Keyspace2").get(new BigIntegerToken("55")).removeAll(makeAddrs("127.0.0.7", "127.0.0.8"));
+        expectedEndpoints.get("Keyspace2").get(new BigIntegerToken("85")).removeAll(makeAddrs("127.0.0.10"));
+        expectedEndpoints.get("Keyspace3").get(new BigIntegerToken("15")).removeAll(makeAddrs("127.0.0.7", "127.0.0.8"));
+        expectedEndpoints.get("Keyspace3").get(new BigIntegerToken("25")).removeAll(makeAddrs("127.0.0.7", "127.0.1.2", "127.0.0.1"));
+        expectedEndpoints.get("Keyspace3").get(new BigIntegerToken("35")).removeAll(makeAddrs("127.0.0.7", "127.0.0.2"));
+        expectedEndpoints.get("Keyspace3").get(new BigIntegerToken("45")).removeAll(makeAddrs("127.0.0.7", "127.0.0.10", "127.0.0.3"));
+        expectedEndpoints.get("Keyspace3").get(new BigIntegerToken("55")).removeAll(makeAddrs("127.0.0.7", "127.0.0.10", "127.0.0.4"));
+        expectedEndpoints.get("Keyspace3").get(new BigIntegerToken("65")).removeAll(makeAddrs("127.0.0.10"));
+        expectedEndpoints.get("Keyspace3").get(new BigIntegerToken("75")).removeAll(makeAddrs("127.0.0.10"));
+        expectedEndpoints.get("Keyspace3").get(new BigIntegerToken("85")).removeAll(makeAddrs("127.0.0.10"));
+        expectedEndpoints.get("Keyspace4").get(new BigIntegerToken("35")).removeAll(makeAddrs("127.0.0.7", "127.0.0.8"));
+        expectedEndpoints.get("Keyspace4").get(new BigIntegerToken("45")).removeAll(makeAddrs("127.0.0.7", "127.0.1.2", "127.0.0.1"));
+        expectedEndpoints.get("Keyspace4").get(new BigIntegerToken("55")).removeAll(makeAddrs("127.0.0.2", "127.0.0.7"));
+        expectedEndpoints.get("Keyspace4").get(new BigIntegerToken("65")).removeAll(makeAddrs("127.0.0.10"));
+        expectedEndpoints.get("Keyspace4").get(new BigIntegerToken("75")).removeAll(makeAddrs("127.0.0.10"));
+        expectedEndpoints.get("Keyspace4").get(new BigIntegerToken("85")).removeAll(makeAddrs("127.0.0.10"));
+
+        for (String table : DatabaseDescriptor.getNonSystemTables())
         {
-            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(i), testStrategy.getNaturalEndpoints(keyTokens.get(i)));
+            for (int i = 0; i < keyTokens.size(); i++)
+            {
+                endPoints = testStrategy.getWriteEndpoints(keyTokens.get(i), table, testStrategy.getNaturalEndpoints(keyTokens.get(i), table));
+                assertTrue(expectedEndpoints.get(table).get(keyTokens.get(i)).size() == endPoints.size());
+                assertTrue(expectedEndpoints.get(table).get(keyTokens.get(i)).containsAll(endPoints));
+            }
+
+            if (DatabaseDescriptor.getReplicationFactor(table) != 3)
+                continue;
+            // leave this stuff in to guarantee the old tests work the way they were supposed to.
+            // tokens 5, 15 and 25 should go three nodes
+            for (int i=0; i<3; ++i)
+            {
+                endPoints = testStrategy.getWriteEndpoints(keyTokens.get(i), table, testStrategy.getNaturalEndpoints(keyTokens.get(i), table));
+                assertTrue(endPoints.size() == 3);
+                assertTrue(endPoints.contains(hosts.get(i+1)));
+                assertTrue(endPoints.contains(hosts.get(i+2)));
+                assertTrue(endPoints.contains(hosts.get(i+3)));
+            }
+
+            // token 35 goes to nodes 4, 5 and boot1
+            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(3), table, testStrategy.getNaturalEndpoints(keyTokens.get(3), table));
             assertTrue(endPoints.size() == 3);
-            assertTrue(endPoints.contains(hosts.get(i+1)));
-            assertTrue(endPoints.contains(hosts.get(i+2)));
-            assertTrue(endPoints.contains(hosts.get(i+3)));
-        }
+            assertTrue(endPoints.contains(hosts.get(4)));
+            assertTrue(endPoints.contains(hosts.get(5)));
+            assertTrue(endPoints.contains(boot1));
 
-        // token 35 goes to nodes 4, 5 and boot1
-        endPoints = testStrategy.getWriteEndpoints(keyTokens.get(3), testStrategy.getNaturalEndpoints(keyTokens.get(3)));
-        assertTrue(endPoints.size() == 3);
-        assertTrue(endPoints.contains(hosts.get(4)));
-        assertTrue(endPoints.contains(hosts.get(5)));
-        assertTrue(endPoints.contains(boot1));
-
-        // token 45 goes to nodes 5, boot1 and node7
-        endPoints = testStrategy.getWriteEndpoints(keyTokens.get(4), testStrategy.getNaturalEndpoints(keyTokens.get(4)));
-        assertTrue(endPoints.size() == 3);
-        assertTrue(endPoints.contains(hosts.get(5)));
-        assertTrue(endPoints.contains(boot1));
-        assertTrue(endPoints.contains(hosts.get(7)));
-
-        // token 55 goes to boot1, 7, boot2, 8 and 0
-        endPoints = testStrategy.getWriteEndpoints(keyTokens.get(5), testStrategy.getNaturalEndpoints(keyTokens.get(5)));
-        assertTrue(endPoints.size() == 5);
-        assertTrue(endPoints.contains(boot1));
-        assertTrue(endPoints.contains(hosts.get(7)));
-        assertTrue(endPoints.contains(boot2));
-        assertTrue(endPoints.contains(hosts.get(8)));
-        assertTrue(endPoints.contains(hosts.get(0)));
-
-        // token 65 goes to nodes 7, boot2, 8, 0 and 1
-        endPoints = testStrategy.getWriteEndpoints(keyTokens.get(6), testStrategy.getNaturalEndpoints(keyTokens.get(6)));
-        assertTrue(endPoints.size() == 5);
-        assertTrue(endPoints.contains(hosts.get(7)));
-        assertTrue(endPoints.contains(boot2));
-        assertTrue(endPoints.contains(hosts.get(8)));
-        assertTrue(endPoints.contains(hosts.get(0)));
-        assertTrue(endPoints.contains(hosts.get(1)));
-
-        // token 75 goes to nodes boot2, 8, 0, 1 and 2
-        endPoints = testStrategy.getWriteEndpoints(keyTokens.get(7), testStrategy.getNaturalEndpoints(keyTokens.get(7)));
-        assertTrue(endPoints.size() == 5);
-        assertTrue(endPoints.contains(boot2));
-        assertTrue(endPoints.contains(hosts.get(8)));
-        assertTrue(endPoints.contains(hosts.get(0)));
-        assertTrue(endPoints.contains(hosts.get(1)));
-        assertTrue(endPoints.contains(hosts.get(2)));
-
-        // token 85 goes to nodes 0, 1 and 2
-        endPoints = testStrategy.getWriteEndpoints(keyTokens.get(8), testStrategy.getNaturalEndpoints(keyTokens.get(8)));
-        assertTrue(endPoints.size() == 3);
-        assertTrue(endPoints.contains(hosts.get(0)));
-        assertTrue(endPoints.contains(hosts.get(1)));
-        assertTrue(endPoints.contains(hosts.get(2)));
-
-        // token 95 goes to nodes 0, 1 and 2
-        endPoints = testStrategy.getWriteEndpoints(keyTokens.get(9), testStrategy.getNaturalEndpoints(keyTokens.get(9)));
-        assertTrue(endPoints.size() == 3);
-        assertTrue(endPoints.contains(hosts.get(0)));
-        assertTrue(endPoints.contains(hosts.get(1)));
-        assertTrue(endPoints.contains(hosts.get(2)));
+            // token 45 goes to nodes 5, boot1 and node7
+            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(4), table, testStrategy.getNaturalEndpoints(keyTokens.get(4), table));
+            assertTrue(endPoints.size() == 3);
+            assertTrue(endPoints.contains(hosts.get(5)));
+            assertTrue(endPoints.contains(boot1));
+            assertTrue(endPoints.contains(hosts.get(7)));
+
+            // token 55 goes to boot1, 7, boot2, 8 and 0
+            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(5), table, testStrategy.getNaturalEndpoints(keyTokens.get(5), table));
+            assertTrue(endPoints.size() == 5);
+            assertTrue(endPoints.contains(boot1));
+            assertTrue(endPoints.contains(hosts.get(7)));
+            assertTrue(endPoints.contains(boot2));
+            assertTrue(endPoints.contains(hosts.get(8)));
+            assertTrue(endPoints.contains(hosts.get(0)));
+
+            // token 65 goes to nodes 7, boot2, 8, 0 and 1
+            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(6), table, testStrategy.getNaturalEndpoints(keyTokens.get(6), table));
+            assertTrue(endPoints.size() == 5);
+            assertTrue(endPoints.contains(hosts.get(7)));
+            assertTrue(endPoints.contains(boot2));
+            assertTrue(endPoints.contains(hosts.get(8)));
+            assertTrue(endPoints.contains(hosts.get(0)));
+            assertTrue(endPoints.contains(hosts.get(1)));
+
+            // token 75 goes to nodes boot2, 8, 0, 1 and 2
+            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(7), table, testStrategy.getNaturalEndpoints(keyTokens.get(7), table));
+            assertTrue(endPoints.size() == 5);
+            assertTrue(endPoints.contains(boot2));
+            assertTrue(endPoints.contains(hosts.get(8)));
+            assertTrue(endPoints.contains(hosts.get(0)));
+            assertTrue(endPoints.contains(hosts.get(1)));
+            assertTrue(endPoints.contains(hosts.get(2)));
+
+            // token 85 goes to nodes 0, 1 and 2
+            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(8), table, testStrategy.getNaturalEndpoints(keyTokens.get(8), table));
+            assertTrue(endPoints.size() == 3);
+            assertTrue(endPoints.contains(hosts.get(0)));
+            assertTrue(endPoints.contains(hosts.get(1)));
+            assertTrue(endPoints.contains(hosts.get(2)));
+
+            // token 95 goes to nodes 0, 1 and 2
+            endPoints = testStrategy.getWriteEndpoints(keyTokens.get(9), table, testStrategy.getNaturalEndpoints(keyTokens.get(9), table));
+            assertTrue(endPoints.size() == 3);
+            assertTrue(endPoints.contains(hosts.get(0)));
+            assertTrue(endPoints.contains(hosts.get(1)));
+            assertTrue(endPoints.contains(hosts.get(2)));
+        }
 
         ss.setPartitionerUnsafe(oldPartitioner);
         ss.setReplicationStrategyUnsafe(oldStrategy);
@@ -290,10 +421,10 @@
         TokenMetadata tmd = ss.getTokenMetadata();
         tmd.clearUnsafe();
         IPartitioner partitioner = new RandomPartitioner();
-        AbstractReplicationStrategy testStrategy = new RackUnawareStrategy(tmd, 3);
+        AbstractReplicationStrategy testStrategy = new RackUnawareStrategy(tmd, null);
 
         IPartitioner oldPartitioner = ss.setPartitionerUnsafe(partitioner);
-        AbstractReplicationStrategy oldStrategy = ss.setReplicationStrategyUnsafe(testStrategy);
+        Map<String, AbstractReplicationStrategy> oldStrategy = ss.setReplicationStrategyUnsafe(createReplacements(testStrategy));
 
         ArrayList<Token> endPointTokens = new ArrayList<Token>();
         ArrayList<Token> keyTokens = new ArrayList<Token>();
@@ -359,10 +490,10 @@
         TokenMetadata tmd = ss.getTokenMetadata();
         tmd.clearUnsafe();
         IPartitioner partitioner = new RandomPartitioner();
-        AbstractReplicationStrategy testStrategy = new RackUnawareStrategy(tmd, 3);
+        AbstractReplicationStrategy testStrategy = new RackUnawareStrategy(tmd, null);
 
         IPartitioner oldPartitioner = ss.setPartitionerUnsafe(partitioner);
-        AbstractReplicationStrategy oldStrategy = ss.setReplicationStrategyUnsafe(testStrategy);
+        Map<String, AbstractReplicationStrategy> oldStrategy = ss.setReplicationStrategyUnsafe(createReplacements(testStrategy));
 
         ArrayList<Token> endPointTokens = new ArrayList<Token>();
         ArrayList<Token> keyTokens = new ArrayList<Token>();
@@ -403,10 +534,10 @@
         TokenMetadata tmd = ss.getTokenMetadata();
         tmd.clearUnsafe();
         IPartitioner partitioner = new RandomPartitioner();
-        AbstractReplicationStrategy testStrategy = new RackUnawareStrategy(tmd, 3);
+        AbstractReplicationStrategy testStrategy = new RackUnawareStrategy(tmd, null);
 
         IPartitioner oldPartitioner = ss.setPartitionerUnsafe(partitioner);
-        AbstractReplicationStrategy oldStrategy = ss.setReplicationStrategyUnsafe(testStrategy);
+        Map<String, AbstractReplicationStrategy> oldStrategy = ss.setReplicationStrategyUnsafe(createReplacements(testStrategy));
 
         ArrayList<Token> endPointTokens = new ArrayList<Token>();
         ArrayList<Token> keyTokens = new ArrayList<Token>();
@@ -453,10 +584,10 @@
         TokenMetadata tmd = ss.getTokenMetadata();
         tmd.clearUnsafe();
         IPartitioner partitioner = new RandomPartitioner();
-        AbstractReplicationStrategy testStrategy = new RackUnawareStrategy(tmd, 3);
+        AbstractReplicationStrategy testStrategy = new RackUnawareStrategy(tmd, null);
 
         IPartitioner oldPartitioner = ss.setPartitionerUnsafe(partitioner);
-        AbstractReplicationStrategy oldStrategy = ss.setReplicationStrategyUnsafe(testStrategy);
+        Map<String, AbstractReplicationStrategy> oldStrategy = ss.setReplicationStrategyUnsafe(createReplacements(testStrategy));
 
         ArrayList<Token> endPointTokens = new ArrayList<Token>();
         ArrayList<Token> keyTokens = new ArrayList<Token>();
@@ -513,4 +644,11 @@
             assertTrue(ss.getTokenMetadata().isMember(hosts.get(i)));
     }
 
+    private static Collection<InetAddress> makeAddrs(String... hosts) throws UnknownHostException
+    {
+        ArrayList<InetAddress> addrs = new ArrayList<InetAddress>(hosts.length);
+        for (String host : hosts)
+            addrs.add(InetAddress.getByName(host));
+        return addrs;
+    }
 }