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/*
* Licensed to Elasticsearch 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.gateway;
import org.elasticsearch.action.admin.cluster.state.ClusterStateResponse;
import org.elasticsearch.action.admin.indices.mapping.get.GetMappingsResponse;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.cluster.routing.allocation.decider.FilterAllocationDecider;
import org.elasticsearch.common.collect.ImmutableOpenMap;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.env.NodeEnvironment;
import org.elasticsearch.index.Index;
import org.elasticsearch.test.ESIntegTestCase;
import org.elasticsearch.test.ESIntegTestCase.ClusterScope;
import org.elasticsearch.test.ESIntegTestCase.Scope;
import org.elasticsearch.test.InternalTestCluster;
import org.elasticsearch.test.InternalTestCluster.RestartCallback;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.LinkedHashMap;
import static org.elasticsearch.common.xcontent.XContentFactory.jsonBuilder;
import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertAcked;
import static org.hamcrest.Matchers.equalTo;
@ClusterScope(scope = Scope.TEST, numDataNodes = 0)
public class MetaDataWriteDataNodesIT extends ESIntegTestCase {
public void testMetaWrittenAlsoOnDataNode() throws Exception {
// this test checks that index state is written on data only nodes if they have a shard allocated
String masterNode = internalCluster().startMasterOnlyNode(Settings.EMPTY);
String dataNode = internalCluster().startDataOnlyNode(Settings.EMPTY);
assertAcked(prepareCreate("test").setSettings("index.number_of_replicas", 0));
index("test", "doc", "1", jsonBuilder().startObject().field("text", "some text").endObject());
ensureGreen("test");
assertIndexInMetaState(dataNode, "test");
assertIndexInMetaState(masterNode, "test");
}
public void testMetaIsRemovedIfAllShardsFromIndexRemoved() throws Exception {
// this test checks that the index state is removed from a data only node once all shards have been allocated away from it
String masterNode = internalCluster().startMasterOnlyNode(Settings.EMPTY);
InternalTestCluster.Async<String> nodeName1 = internalCluster().startDataOnlyNodeAsync();
InternalTestCluster.Async<String> nodeName2 = internalCluster().startDataOnlyNodeAsync();
String node1 = nodeName1.get();
String node2 = nodeName2.get();
String index = "index";
assertAcked(prepareCreate(index).setSettings(Settings.builder().put("index.number_of_replicas", 0).put(IndexMetaData.INDEX_ROUTING_INCLUDE_GROUP_SETTING.getKey() + "_name", node1)));
index(index, "doc", "1", jsonBuilder().startObject().field("text", "some text").endObject());
ensureGreen();
assertIndexInMetaState(node1, index);
assertIndexDirectoryDeleted(node2, index);
assertIndexInMetaState(masterNode, index);
logger.debug("relocating index...");
client().admin().indices().prepareUpdateSettings(index).setSettings(Settings.builder().put(IndexMetaData.INDEX_ROUTING_INCLUDE_GROUP_SETTING.getKey() + "_name", node2)).get();
client().admin().cluster().prepareHealth().setWaitForRelocatingShards(0).get();
ensureGreen();
assertIndexDirectoryDeleted(node1, index);
assertIndexInMetaState(node2, index);
assertIndexInMetaState(masterNode, index);
}
public void testMetaWrittenWhenIndexIsClosedAndMetaUpdated() throws Exception {
String masterNode = internalCluster().startMasterOnlyNode(Settings.EMPTY);
final String dataNode = internalCluster().startDataOnlyNode(Settings.EMPTY);
final String index = "index";
assertAcked(prepareCreate(index).setSettings(Settings.builder().put("index.number_of_replicas", 0)));
logger.info("--> wait for green index");
ensureGreen();
logger.info("--> wait for meta state written for index");
assertIndexInMetaState(dataNode, index);
assertIndexInMetaState(masterNode, index);
logger.info("--> close index");
client().admin().indices().prepareClose(index).get();
// close the index
ClusterStateResponse clusterStateResponse = client().admin().cluster().prepareState().get();
assertThat(clusterStateResponse.getState().getMetaData().index(index).getState().name(), equalTo(IndexMetaData.State.CLOSE.name()));
// update the mapping. this should cause the new meta data to be written although index is closed
client().admin().indices().preparePutMapping(index).setType("doc").setSource(jsonBuilder().startObject()
.startObject("properties")
.startObject("integer_field")
.field("type", "integer")
.endObject()
.endObject()
.endObject()).get();
GetMappingsResponse getMappingsResponse = client().admin().indices().prepareGetMappings(index).addTypes("doc").get();
assertNotNull(((LinkedHashMap) (getMappingsResponse.getMappings().get(index).get("doc").getSourceAsMap().get("properties"))).get("integer_field"));
// make sure it was also written on red node although index is closed
ImmutableOpenMap<String, IndexMetaData> indicesMetaData = getIndicesMetaDataOnNode(dataNode);
assertNotNull(((LinkedHashMap) (indicesMetaData.get(index).getMappings().get("doc").getSourceAsMap().get("properties"))).get("integer_field"));
assertThat(indicesMetaData.get(index).getState(), equalTo(IndexMetaData.State.CLOSE));
/* Try the same and see if this also works if node was just restarted.
* Each node holds an array of indices it knows of and checks if it should
* write new meta data by looking up in this array. We need it because if an
* index is closed it will not appear in the shard routing and we therefore
* need to keep track of what we wrote before. However, when the node is
* restarted this array is empty and we have to fill it before we decide
* what we write. This is why we explicitly test for it.
*/
internalCluster().restartNode(dataNode, new RestartCallback());
client().admin().indices().preparePutMapping(index).setType("doc").setSource(jsonBuilder().startObject()
.startObject("properties")
.startObject("float_field")
.field("type", "float")
.endObject()
.endObject()
.endObject()).get();
getMappingsResponse = client().admin().indices().prepareGetMappings(index).addTypes("doc").get();
assertNotNull(((LinkedHashMap) (getMappingsResponse.getMappings().get(index).get("doc").getSourceAsMap().get("properties"))).get("float_field"));
// make sure it was also written on red node although index is closed
indicesMetaData = getIndicesMetaDataOnNode(dataNode);
assertNotNull(((LinkedHashMap) (indicesMetaData.get(index).getMappings().get("doc").getSourceAsMap().get("properties"))).get("float_field"));
assertThat(indicesMetaData.get(index).getState(), equalTo(IndexMetaData.State.CLOSE));
// finally check that meta data is also written of index opened again
assertAcked(client().admin().indices().prepareOpen(index).get());
indicesMetaData = getIndicesMetaDataOnNode(dataNode);
assertThat(indicesMetaData.get(index).getState(), equalTo(IndexMetaData.State.OPEN));
}
protected void assertIndexDirectoryDeleted(final String nodeName, final String indexName) throws Exception {
assertBusy(() -> {
logger.info("checking if index directory exists...");
assertFalse("Expecting index directory of " + indexName + " to be deleted from node " + nodeName, indexDirectoryExists(nodeName, indexName));
}
);
}
protected void assertIndexInMetaState(final String nodeName, final String indexName) throws Exception {
assertBusy(() -> {
logger.info("checking if meta state exists...");
try {
assertTrue("Expecting meta state of index " + indexName + " to be on node " + nodeName, getIndicesMetaDataOnNode(nodeName).containsKey(indexName));
} catch (Throwable t) {
logger.info("failed to load meta state", t);
fail("could not load meta state");
}
}
);
}
private boolean indexDirectoryExists(String nodeName, String indexName) {
NodeEnvironment nodeEnv = ((InternalTestCluster) cluster()).getInstance(NodeEnvironment.class, nodeName);
for (Path path : nodeEnv.indexPaths(new Index(indexName))) {
if (Files.exists(path)) {
return true;
}
}
return false;
}
private ImmutableOpenMap<String, IndexMetaData> getIndicesMetaDataOnNode(String nodeName) throws Exception {
GatewayMetaState nodeMetaState = ((InternalTestCluster) cluster()).getInstance(GatewayMetaState.class, nodeName);
MetaData nodeMetaData = nodeMetaState.loadMetaState();
return nodeMetaData.getIndices();
}
}
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