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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.action.admin.indices.upgrade;
import org.elasticsearch.ExceptionsHelper;
import org.elasticsearch.Version;
import org.elasticsearch.action.admin.indices.segments.IndexSegments;
import org.elasticsearch.action.admin.indices.segments.IndexShardSegments;
import org.elasticsearch.action.admin.indices.segments.IndicesSegmentResponse;
import org.elasticsearch.action.admin.indices.segments.ShardSegments;
import org.elasticsearch.action.admin.indices.upgrade.get.IndexUpgradeStatus;
import org.elasticsearch.action.admin.indices.upgrade.get.UpgradeStatusResponse;
import org.elasticsearch.action.index.IndexRequestBuilder;
import org.elasticsearch.client.Client;
import org.elasticsearch.cluster.routing.allocation.decider.ConcurrentRebalanceAllocationDecider;
import org.elasticsearch.cluster.routing.allocation.decider.EnableAllocationDecider;
import org.elasticsearch.common.logging.ESLogger;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.engine.Segment;
import org.elasticsearch.test.ESBackcompatTestCase;
import org.elasticsearch.test.ESIntegTestCase;
import org.junit.BeforeClass;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.function.Predicate;
import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertAcked;
import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertNoFailures;
@ESIntegTestCase.ClusterScope(scope = ESIntegTestCase.Scope.TEST) // test scope since we set cluster wide settings
public class UpgradeIT extends ESBackcompatTestCase {
@BeforeClass
public static void checkUpgradeVersion() {
final boolean luceneVersionMatches = (globalCompatibilityVersion().luceneVersion.major == Version.CURRENT.luceneVersion.major
&& globalCompatibilityVersion().luceneVersion.minor == Version.CURRENT.luceneVersion.minor);
assumeFalse("lucene versions must be different to run upgrade test", luceneVersionMatches);
}
@Override
protected int minExternalNodes() {
return 2;
}
public void testUpgrade() throws Exception {
// allow the cluster to rebalance quickly - 2 concurrent rebalance are default we can do higher
Settings.Builder builder = Settings.builder();
builder.put(ConcurrentRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_CLUSTER_CONCURRENT_REBALANCE_SETTING.getKey(), 100);
client().admin().cluster().prepareUpdateSettings().setPersistentSettings(builder).get();
int numIndexes = randomIntBetween(2, 4);
String[] indexNames = new String[numIndexes];
for (int i = 0; i < numIndexes; ++i) {
final String indexName = "test" + i;
indexNames[i] = indexName;
Settings settings = Settings.builder()
.put("index.routing.allocation.exclude._name", backwardsCluster().newNodePattern())
// don't allow any merges so that we can check segments are upgraded
// by the upgrader, and not just regular merging
.put("index.merge.policy.segments_per_tier", 1000000f)
.put(indexSettings())
.build();
assertAcked(prepareCreate(indexName).setSettings(settings));
ensureGreen(indexName);
assertAllShardsOnNodes(indexName, backwardsCluster().backwardsNodePattern());
int numDocs = scaledRandomIntBetween(100, 1000);
List<IndexRequestBuilder> docs = new ArrayList<>();
for (int j = 0; j < numDocs; ++j) {
String id = Integer.toString(j);
docs.add(client().prepareIndex(indexName, "type1", id).setSource("text", "sometext"));
}
indexRandom(true, docs);
ensureGreen(indexName);
if (globalCompatibilityVersion().before(Version.V_1_4_0_Beta1)) {
// before 1.4 and the wait_if_ongoing flag, flushes could fail randomly, so we
// need to continue to try flushing until all shards succeed
assertTrue(awaitBusy(() -> flush(indexName).getFailedShards() == 0));
} else {
assertEquals(0, flush(indexName).getFailedShards());
}
// index more docs that won't be flushed
numDocs = scaledRandomIntBetween(100, 1000);
docs = new ArrayList<>();
for (int j = 0; j < numDocs; ++j) {
String id = Integer.toString(j);
docs.add(client().prepareIndex(indexName, "type2", id).setSource("text", "someothertext"));
}
indexRandom(true, docs);
ensureGreen(indexName);
}
logger.debug("--> Upgrading nodes");
backwardsCluster().allowOnAllNodes(indexNames);
ensureGreen();
// disable allocation entirely until all nodes are upgraded
builder = Settings.builder();
builder.put(EnableAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ENABLE_SETTING.getKey(), EnableAllocationDecider.Allocation.NONE);
client().admin().cluster().prepareUpdateSettings().setTransientSettings(builder).get();
backwardsCluster().upgradeAllNodes();
builder = Settings.builder();
// disable rebalanceing entirely for the time being otherwise we might get relocations / rebalance from nodes with old segments
builder.put(EnableAllocationDecider.CLUSTER_ROUTING_REBALANCE_ENABLE_SETTING.getKey(), EnableAllocationDecider.Rebalance.NONE);
builder.put(EnableAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ENABLE_SETTING.getKey(), EnableAllocationDecider.Allocation.ALL);
client().admin().cluster().prepareUpdateSettings().setTransientSettings(builder).get();
ensureGreen();
logger.info("--> Nodes upgrade complete");
logSegmentsState();
assertNotUpgraded(client());
final String indexToUpgrade = "test" + randomInt(numIndexes - 1);
// This test fires up another node running an older version of ES, but because wire protocol changes across major ES versions, it
// means we can never generate ancient segments in this test (unless Lucene major version bumps but ES major version does not):
assertFalse(hasAncientSegments(client(), indexToUpgrade));
logger.info("--> Running upgrade on index " + indexToUpgrade);
assertNoFailures(client().admin().indices().prepareUpgrade(indexToUpgrade).get());
awaitBusy(() -> {
try {
return isUpgraded(client(), indexToUpgrade);
} catch (Exception e) {
throw ExceptionsHelper.convertToRuntime(e);
}
});
logger.info("--> Single index upgrade complete");
logger.info("--> Running upgrade on the rest of the indexes");
assertNoFailures(client().admin().indices().prepareUpgrade().get());
logSegmentsState();
logger.info("--> Full upgrade complete");
assertUpgraded(client());
}
public static void assertNotUpgraded(Client client, String... index) throws Exception {
for (IndexUpgradeStatus status : getUpgradeStatus(client, index)) {
assertTrue("index " + status.getIndex() + " should not be zero sized", status.getTotalBytes() != 0);
// TODO: it would be better for this to be strictly greater, but sometimes an extra flush
// mysteriously happens after the second round of docs are indexed
assertTrue("index " + status.getIndex() + " should have recovered some segments from transaction log",
status.getTotalBytes() >= status.getToUpgradeBytes());
assertTrue("index " + status.getIndex() + " should need upgrading", status.getToUpgradeBytes() != 0);
}
}
public static void assertNoAncientSegments(Client client, String... index) throws Exception {
for (IndexUpgradeStatus status : getUpgradeStatus(client, index)) {
assertTrue("index " + status.getIndex() + " should not be zero sized", status.getTotalBytes() != 0);
// TODO: it would be better for this to be strictly greater, but sometimes an extra flush
// mysteriously happens after the second round of docs are indexed
assertTrue("index " + status.getIndex() + " should not have any ancient segments",
status.getToUpgradeBytesAncient() == 0);
assertTrue("index " + status.getIndex() + " should have recovered some segments from transaction log",
status.getTotalBytes() >= status.getToUpgradeBytes());
assertTrue("index " + status.getIndex() + " should need upgrading", status.getToUpgradeBytes() != 0);
}
}
/** Returns true if there are any ancient segments. */
public static boolean hasAncientSegments(Client client, String index) throws Exception {
for (IndexUpgradeStatus status : getUpgradeStatus(client, index)) {
if (status.getToUpgradeBytesAncient() != 0) {
return true;
}
}
return false;
}
/** Returns true if there are any old but not ancient segments. */
public static boolean hasOldButNotAncientSegments(Client client, String index) throws Exception {
for (IndexUpgradeStatus status : getUpgradeStatus(client, index)) {
if (status.getToUpgradeBytes() > status.getToUpgradeBytesAncient()) {
return true;
}
}
return false;
}
public static void assertUpgraded(Client client, String... index) throws Exception {
for (IndexUpgradeStatus status : getUpgradeStatus(client, index)) {
assertTrue("index " + status.getIndex() + " should not be zero sized", status.getTotalBytes() != 0);
assertEquals("index " + status.getIndex() + " should be upgraded",
0, status.getToUpgradeBytes());
}
// double check using the segments api that all segments are actually upgraded
IndicesSegmentResponse segsRsp;
if (index == null) {
segsRsp = client().admin().indices().prepareSegments().execute().actionGet();
} else {
segsRsp = client().admin().indices().prepareSegments(index).execute().actionGet();
}
for (IndexSegments indexSegments : segsRsp.getIndices().values()) {
for (IndexShardSegments shard : indexSegments) {
for (ShardSegments segs : shard.getShards()) {
for (Segment seg : segs.getSegments()) {
assertEquals("Index " + indexSegments.getIndex() + " has unupgraded segment " + seg.toString(),
Version.CURRENT.luceneVersion.major, seg.version.major);
assertEquals("Index " + indexSegments.getIndex() + " has unupgraded segment " + seg.toString(),
Version.CURRENT.luceneVersion.minor, seg.version.minor);
}
}
}
}
}
static boolean isUpgraded(Client client, String index) throws Exception {
ESLogger logger = Loggers.getLogger(UpgradeIT.class);
int toUpgrade = 0;
for (IndexUpgradeStatus status : getUpgradeStatus(client, index)) {
logger.info("Index: " + status.getIndex() + ", total: " + status.getTotalBytes() + ", toUpgrade: " + status.getToUpgradeBytes());
toUpgrade += status.getToUpgradeBytes();
}
return toUpgrade == 0;
}
static class UpgradeStatus {
public final String indexName;
public final int totalBytes;
public final int toUpgradeBytes;
public final int toUpgradeBytesAncient;
public UpgradeStatus(String indexName, int totalBytes, int toUpgradeBytes, int toUpgradeBytesAncient) {
this.indexName = indexName;
this.totalBytes = totalBytes;
this.toUpgradeBytes = toUpgradeBytes;
this.toUpgradeBytesAncient = toUpgradeBytesAncient;
assert toUpgradeBytesAncient <= toUpgradeBytes;
}
}
@SuppressWarnings("unchecked")
static Collection<IndexUpgradeStatus> getUpgradeStatus(Client client, String... indices) throws Exception {
UpgradeStatusResponse upgradeStatusResponse = client.admin().indices().prepareUpgradeStatus(indices).get();
assertNoFailures(upgradeStatusResponse);
return upgradeStatusResponse.getIndices().values();
}
}
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