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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.index.replication;
import org.elasticsearch.action.DocWriteResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentHelper;
import org.elasticsearch.index.engine.Engine;
import org.elasticsearch.index.engine.InternalEngine;
import org.elasticsearch.index.engine.InternalEngineTests;
import org.elasticsearch.index.engine.SegmentsStats;
import org.elasticsearch.index.seqno.SeqNoStats;
import org.elasticsearch.index.shard.IndexShard;
import org.elasticsearch.index.shard.IndexShardTests;
import org.elasticsearch.index.store.Store;
import org.elasticsearch.indices.recovery.RecoveryTarget;
import java.io.IOException;
import java.util.Collections;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Future;
import static org.hamcrest.Matchers.equalTo;
public class IndexLevelReplicationTests extends ESIndexLevelReplicationTestCase {
public void testSimpleReplication() throws Exception {
try (ReplicationGroup shards = createGroup(randomInt(2))) {
shards.startAll();
final int docCount = randomInt(50);
shards.indexDocs(docCount);
shards.assertAllEqual(docCount);
}
}
public void testSimpleAppendOnlyReplication() throws Exception {
try (ReplicationGroup shards = createGroup(randomInt(2))) {
shards.startAll();
final int docCount = randomInt(50);
shards.appendDocs(docCount);
shards.assertAllEqual(docCount);
}
}
public void testAppendWhileRecovering() throws Exception {
try (ReplicationGroup shards = createGroup(0)) {
shards.startAll();
IndexShard replica = shards.addReplica();
CountDownLatch latch = new CountDownLatch(2);
int numDocs = randomIntBetween(100, 200);
shards.appendDocs(1);// just append one to the translog so we can assert below
Thread thread = new Thread() {
@Override
public void run() {
try {
latch.countDown();
latch.await();
shards.appendDocs(numDocs - 1);
} catch (Exception e) {
throw new AssertionError(e);
}
}
};
thread.start();
Future<Void> future = shards.asyncRecoverReplica(replica, (indexShard, node)
-> new RecoveryTarget(indexShard, node, recoveryListener, version -> {}) {
@Override
public void cleanFiles(int totalTranslogOps, Store.MetadataSnapshot sourceMetaData) throws IOException {
super.cleanFiles(totalTranslogOps, sourceMetaData);
latch.countDown();
try {
latch.await();
} catch (InterruptedException e) {
throw new AssertionError(e);
}
}
});
future.get();
thread.join();
shards.assertAllEqual(numDocs);
Engine engine = IndexShardTests.getEngineFromShard(replica);
assertEquals("expected at no version lookups ", InternalEngineTests.getNumVersionLookups((InternalEngine) engine), 0);
for (IndexShard shard : shards) {
engine = IndexShardTests.getEngineFromShard(shard);
assertEquals(0, InternalEngineTests.getNumIndexVersionsLookups((InternalEngine) engine));
assertEquals(0, InternalEngineTests.getNumVersionLookups((InternalEngine) engine));
}
}
}
public void testInheritMaxValidAutoIDTimestampOnRecovery() throws Exception {
try (ReplicationGroup shards = createGroup(0)) {
shards.startAll();
final IndexRequest indexRequest = new IndexRequest(index.getName(), "type").source("{}");
indexRequest.onRetry(); // force an update of the timestamp
final IndexResponse response = shards.index(indexRequest);
assertEquals(DocWriteResponse.Result.CREATED, response.getResult());
if (randomBoolean()) { // lets check if that also happens if no translog record is replicated
shards.flush();
}
IndexShard replica = shards.addReplica();
shards.recoverReplica(replica);
SegmentsStats segmentsStats = replica.segmentStats(false);
SegmentsStats primarySegmentStats = shards.getPrimary().segmentStats(false);
assertNotEquals(IndexRequest.UNSET_AUTO_GENERATED_TIMESTAMP, primarySegmentStats.getMaxUnsafeAutoIdTimestamp());
assertEquals(primarySegmentStats.getMaxUnsafeAutoIdTimestamp(), segmentsStats.getMaxUnsafeAutoIdTimestamp());
assertNotEquals(Long.MAX_VALUE, segmentsStats.getMaxUnsafeAutoIdTimestamp());
}
}
public void testCheckpointsAdvance() throws Exception {
try (ReplicationGroup shards = createGroup(randomInt(3))) {
shards.startPrimary();
int numDocs = 0;
int startedShards;
do {
numDocs += shards.indexDocs(randomInt(20));
startedShards = shards.startReplicas(randomIntBetween(1, 2));
} while (startedShards > 0);
if (numDocs == 0 || randomBoolean()) {
// in the case we have no indexing, we simulate the background global checkpoint sync
shards.getPrimary().updateGlobalCheckpointOnPrimary();
}
for (IndexShard shard : shards) {
final SeqNoStats shardStats = shard.seqNoStats();
final ShardRouting shardRouting = shard.routingEntry();
logger.debug("seq_no stats for {}: {}", shardRouting, XContentHelper.toString(shardStats,
new ToXContent.MapParams(Collections.singletonMap("pretty", "false"))));
assertThat(shardRouting + " local checkpoint mismatch", shardStats.getLocalCheckpoint(), equalTo(numDocs - 1L));
assertThat(shardRouting + " global checkpoint mismatch", shardStats.getGlobalCheckpoint(), equalTo(numDocs - 1L));
assertThat(shardRouting + " max seq no mismatch", shardStats.getMaxSeqNo(), equalTo(numDocs - 1L));
}
}
}
}
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