test for primary allocating over replicas

still marked as await fix, requires investigation

src/test/java/org/elasticsearch/test/unit/cluster/routing/allocation/PreferPrimaryAllocationTests.java

@@ -0,0 +1,109 @@
+/*
+ * Licensed to ElasticSearch and Shay Banon under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. ElasticSearch licenses this
+ * file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.elasticsearch.test.unit.cluster.routing.allocation;
+
+import org.apache.lucene.util.LuceneTestCase;
+import org.elasticsearch.cluster.ClusterState;
+import org.elasticsearch.cluster.metadata.MetaData;
+import org.elasticsearch.cluster.routing.RoutingTable;
+import org.elasticsearch.cluster.routing.allocation.AllocationService;
+import org.elasticsearch.common.logging.ESLogger;
+import org.elasticsearch.common.logging.Loggers;
+import org.elasticsearch.test.integration.ElasticsearchTestCase;
+import org.junit.Test;
+
+import static org.elasticsearch.cluster.ClusterState.newClusterStateBuilder;
+import static org.elasticsearch.cluster.metadata.IndexMetaData.newIndexMetaDataBuilder;
+import static org.elasticsearch.cluster.metadata.MetaData.newMetaDataBuilder;
+import static org.elasticsearch.cluster.node.DiscoveryNodes.newNodesBuilder;
+import static org.elasticsearch.cluster.routing.RoutingBuilders.routingTable;
+import static org.elasticsearch.cluster.routing.ShardRoutingState.INITIALIZING;
+import static org.elasticsearch.common.settings.ImmutableSettings.settingsBuilder;
+import static org.elasticsearch.test.unit.cluster.routing.allocation.RoutingAllocationTests.newNode;
+import static org.hamcrest.Matchers.equalTo;
+
+/**
+ */
+public class PreferPrimaryAllocationTests extends ElasticsearchTestCase {
+
+    private final ESLogger logger = Loggers.getLogger(PreferPrimaryAllocationTests.class);
+
+    @LuceneTestCase.AwaitsFix(bugUrl = "seems like unassigned is cleared so throttling for primaries is not properly working")
+    @Test
+    public void testPreferPrimaryAllocationOverReplicas() {
+        logger.info("create an allocation with 1 initial recoveries");
+        AllocationService strategy = new AllocationService(settingsBuilder()
+                .put("cluster.routing.allocation.node_concurrent_recoveries", 1)
+                .put("cluster.routing.allocation.node_initial_primaries_recoveries", 1)
+                .build());
+
+        logger.info("create several indices with no replicas, and wait till all are allocated");
+
+        MetaData metaData = newMetaDataBuilder()
+                .put(newIndexMetaDataBuilder("test1").numberOfShards(10).numberOfReplicas(0))
+                .put(newIndexMetaDataBuilder("test2").numberOfShards(10).numberOfReplicas(0))
+                .build();
+
+        RoutingTable routingTable = routingTable()
+                .addAsNew(metaData.index("test1"))
+                .addAsNew(metaData.index("test2"))
+                .build();
+
+        ClusterState clusterState = newClusterStateBuilder().metaData(metaData).routingTable(routingTable).build();
+
+        logger.info("adding two nodes and performing rerouting till all are allocated");
+        clusterState = newClusterStateBuilder().state(clusterState).nodes(newNodesBuilder().put(newNode("node1")).put(newNode("node2"))).build();
+        routingTable = strategy.reroute(clusterState).routingTable();
+        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();
+
+        while (!clusterState.routingNodes().shardsWithState(INITIALIZING).isEmpty()) {
+            routingTable = strategy.applyStartedShards(clusterState, clusterState.routingNodes().shardsWithState(INITIALIZING)).routingTable();
+            clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();
+        }
+
+        logger.info("increasing the number of replicas to 1, and perform a reroute (to get the replicas allocation going)");
+        routingTable = RoutingTable.builder().routingTable(routingTable).updateNumberOfReplicas(1).build();
+        metaData = MetaData.newMetaDataBuilder().metaData(clusterState.metaData()).updateNumberOfReplicas(1).build();
+        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).metaData(metaData).build();
+
+        routingTable = strategy.reroute(clusterState).routingTable();
+        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();
+
+        logger.info("2 replicas should be initializing now for the existing indices (we throttle to 1)");
+        assertThat(clusterState.routingNodes().shardsWithState(INITIALIZING).size(), equalTo(2));
+
+        logger.info("create a new index");
+        metaData = newMetaDataBuilder().metaData(clusterState.metaData())
+                .put(newIndexMetaDataBuilder("new_index").numberOfShards(4).numberOfReplicas(0))
+                .build();
+
+        routingTable = routingTable().routingTable(clusterState.routingTable())
+                .addAsNew(metaData.index("new_index"))
+                .build();
+
+        clusterState = newClusterStateBuilder().state(clusterState).metaData(metaData).routingTable(routingTable).build();
+
+        logger.info("reroute, verify that primaries for the new index primary shards are allocated");
+        routingTable = strategy.reroute(clusterState).routingTable();
+        clusterState = newClusterStateBuilder().state(clusterState).routingTable(routingTable).build();
+
+        assertThat(clusterState.routingTable().index("new_index").shardsWithState(INITIALIZING).size(), equalTo(2));
+    }
+}