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Add testing around recovery to TruncateTranslogIT

This commit is contained in:
Boaz Leskes 2017-07-17 10:18:46 +02:00
parent f121cd3beb
commit 7739aad1aa
1 changed files with 178 additions and 22 deletions
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182
core/src/test/java/org/elasticsearch/index/translog/TruncateTranslogIT.java
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@ -29,9 +29,10 @@ import org.apache.lucene.store.Lock;
import org.apache.lucene.store.LockObtainFailedException;
import org.apache.lucene.store.NativeFSLockFactory;
import org.elasticsearch.action.admin.cluster.node.stats.NodesStatsResponse;
import org.elasticsearch.action.admin.indices.flush.FlushRequest;
import org.elasticsearch.action.admin.indices.recovery.RecoveryResponse;
import org.elasticsearch.action.index.IndexRequestBuilder;
import org.elasticsearch.action.search.SearchPhaseExecutionException;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.cli.MockTerminal;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.routing.GroupShardsIterator;
@ -43,15 +44,18 @@ import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.ByteSizeUnit;
import org.elasticsearch.common.unit.ByteSizeValue;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.env.Environment;
import org.elasticsearch.index.Index;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.index.MockEngineFactoryPlugin;
import org.elasticsearch.index.shard.IndexShard;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.indices.IndicesService;
import org.elasticsearch.indices.recovery.RecoveryState;
import org.elasticsearch.monitor.fs.FsInfo;
import org.elasticsearch.plugins.Plugin;
import org.elasticsearch.test.ESIntegTestCase;
import org.elasticsearch.test.InternalTestCluster;
import org.elasticsearch.test.engine.MockEngineSupport;
import org.elasticsearch.test.hamcrest.ElasticsearchAssertions;
import org.elasticsearch.test.transport.MockTransportService;
import java.io.IOException;
@ -63,7 +67,6 @@ import java.nio.file.Path;
import java.nio.file.StandardOpenOption;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
@ -72,7 +75,10 @@ import java.util.concurrent.TimeUnit;
import static org.elasticsearch.common.util.CollectionUtils.iterableAsArrayList;
import static org.elasticsearch.index.query.QueryBuilders.matchAllQuery;
import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertAcked;
import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertHitCount;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.greaterThan;
import static org.hamcrest.Matchers.notNullValue;
@ESIntegTestCase.ClusterScope(scope = ESIntegTestCase.Scope.SUITE, numDataNodes = 0)
@ -84,23 +90,40 @@ public class TruncateTranslogIT extends ESIntegTestCase {
}
public void testCorruptTranslogTruncation() throws Exception {
internalCluster().startNodes(1, Settings.EMPTY);
internalCluster().startNodes(2, Settings.EMPTY);
final String replicaNode = internalCluster().getNodeNames()[1];
assertAcked(prepareCreate("test").setSettings(Settings.builder()
.put("index.number_of_shards", 1)
.put("index.number_of_replicas", 0)
.put("index.number_of_replicas", 1)
.put("index.refresh_interval", "-1")
.put(MockEngineSupport.DISABLE_FLUSH_ON_CLOSE.getKey(), true) // never flush - always recover from translog
.put("index.routing.allocation.exclude._name", replicaNode)
));
ensureYellow();
assertAcked(client().admin().indices().prepareUpdateSettings("test").setSettings(Settings.builder()
.put("index.routing.allocation.exclude._name", (String)null)
));
// Index some documents
int numDocs = scaledRandomIntBetween(100, 1000);
IndexRequestBuilder[] builders = new IndexRequestBuilder[numDocs];
logger.info("--> indexing more doc to be kept");
int numDocsToKeep = randomIntBetween(0, 100);
IndexRequestBuilder[] builders = new IndexRequestBuilder[numDocsToKeep];
for (int i = 0; i < builders.length; i++) {
builders[i] = client().prepareIndex("test", "type").setSource("foo", "bar");
}
indexRandom(false, false, false, Arrays.asList(builders));
flush("test");
disableTranslogFlush("test");
// having no extra docs is an interesting case for seq no based recoveries - test it more often
int numDocsToTruncate = randomBoolean() ? 0 : randomIntBetween(0, 100);
logger.info("--> indexing [{}] more doc to be truncated", numDocsToTruncate);
builders = new IndexRequestBuilder[numDocsToTruncate];
for (int i = 0; i < builders.length; i++) {
builders[i] = client().prepareIndex("test", "type").setSource("foo", "bar");
}
indexRandom(false, false, false, Arrays.asList(builders));
Set<Path> translogDirs = getTranslogDirs("test");
@ -120,13 +143,28 @@ public class TruncateTranslogIT extends ESIntegTestCase {
}
}
final boolean expectSeqNoRecovery;
if (randomBoolean() && numDocsToTruncate > 0) {
// flush the replica, so it will have more docs than what the primary will have
Index index = resolveIndex("test");
IndexShard replica = internalCluster().getInstance(IndicesService.class, replicaNode).getShardOrNull(new ShardId(index, 0));
replica.flush(new FlushRequest());
expectSeqNoRecovery = false;
logger.info("--> ops based recovery disabled by flushing replica");
} else {
expectSeqNoRecovery = true;
}
// shut down the replica node to be tested later
internalCluster().stopRandomNode(InternalTestCluster.nameFilter(replicaNode));
// Corrupt the translog file(s)
logger.info("--> corrupting translog");
corruptRandomTranslogFiles("test");
// Restart the single node
logger.info("--> restarting node");
internalCluster().fullRestart();
internalCluster().restartRandomDataNode();
client().admin().cluster().prepareHealth().setWaitForYellowStatus()
.setTimeout(new TimeValue(1000, TimeUnit.MILLISECONDS))
.setWaitForEvents(Priority.LANGUID)
@ -171,14 +209,122 @@ public class TruncateTranslogIT extends ESIntegTestCase {
ensureYellow("test");
// Run a search and make sure it succeeds
SearchResponse resp = client().prepareSearch("test").setQuery(matchAllQuery()).get();
ElasticsearchAssertions.assertNoFailures(resp);
assertHitCount(client().prepareSearch("test").setQuery(matchAllQuery()).get(), numDocsToKeep);
logger.info("--> starting the replica node to test recovery");
internalCluster().startNode();
ensureGreen("test");
assertHitCount(client().prepareSearch("test").setPreference("_replica").setQuery(matchAllQuery()).get(), numDocsToKeep);
final RecoveryResponse recoveryResponse = client().admin().indices().prepareRecoveries("test").setActiveOnly(false).get();
final RecoveryState replicaRecoveryState = recoveryResponse.shardRecoveryStates().get("test").stream()
.filter(recoveryState -> recoveryState.getPrimary() == false).findFirst().get();
assertThat(replicaRecoveryState.getIndex().toString(), replicaRecoveryState.getIndex().recoveredFileCount(),
expectSeqNoRecovery ? equalTo(0) : greaterThan(0));
}
public void testCorruptTranslogTruncationOfReplica() throws Exception {
internalCluster().startNodes(2, Settings.EMPTY);
final String primaryNode = internalCluster().getNodeNames()[0];
final String replicaNode = internalCluster().getNodeNames()[1];
assertAcked(prepareCreate("test").setSettings(Settings.builder()
.put("index.number_of_shards", 1)
.put("index.number_of_replicas", 1)
.put("index.refresh_interval", "-1")
.put(MockEngineSupport.DISABLE_FLUSH_ON_CLOSE.getKey(), true) // never flush - always recover from translog
.put("index.routing.allocation.exclude._name", replicaNode)
));
ensureYellow();
assertAcked(client().admin().indices().prepareUpdateSettings("test").setSettings(Settings.builder()
.put("index.routing.allocation.exclude._name", (String)null)
));
ensureGreen();
// Index some documents
logger.info("--> indexing more doc to be kept");
int numDocsToKeep = randomIntBetween(0, 100);
IndexRequestBuilder[] builders = new IndexRequestBuilder[numDocsToKeep];
for (int i = 0; i < builders.length; i++) {
builders[i] = client().prepareIndex("test", "type").setSource("foo", "bar");
}
indexRandom(false, false, false, Arrays.asList(builders));
flush("test");
disableTranslogFlush("test");
// having no extra docs is an interesting case for seq no based recoveries - test it more often
int numDocsToTruncate = randomBoolean() ? 0 : randomIntBetween(0, 100);
logger.info("--> indexing [{}] more doc to be truncated", numDocsToTruncate);
builders = new IndexRequestBuilder[numDocsToTruncate];
for (int i = 0; i < builders.length; i++) {
builders[i] = client().prepareIndex("test", "type").setSource("foo", "bar");
}
indexRandom(false, false, false, Arrays.asList(builders));
final int totalDocs = numDocsToKeep + numDocsToTruncate;
// sample the replica node translog dirs
final ShardId shardId = new ShardId(resolveIndex("test"), 0);
Set<Path> translogDirs = getTranslogDirs(replicaNode, shardId);
// stop the cluster nodes. we don't use full restart so the node start up order will be the same
// and shard roles will be maintained
internalCluster().stopRandomDataNode();
internalCluster().stopRandomDataNode();
// Corrupt the translog file(s)
logger.info("--> corrupting translog");
corruptTranslogFiles(translogDirs);
// Restart the single node
logger.info("--> starting node");
internalCluster().startNode();
ensureYellow();
// Run a search and make sure it succeeds
assertHitCount(client().prepareSearch("test").setQuery(matchAllQuery()).get(), totalDocs);
TruncateTranslogCommand ttc = new TruncateTranslogCommand();
MockTerminal t = new MockTerminal();
OptionParser parser = ttc.getParser();
for (Path translogDir : translogDirs) {
final Path idxLocation = translogDir.getParent().resolve("index");
assertBusy(() -> {
logger.info("--> checking that lock has been released for {}", idxLocation);
try (Directory dir = FSDirectory.open(idxLocation, NativeFSLockFactory.INSTANCE);
Lock writeLock = dir.obtainLock(IndexWriter.WRITE_LOCK_NAME)) {
// Great, do nothing, we just wanted to obtain the lock
} catch (LockObtainFailedException lofe) {
logger.info("--> failed acquiring lock for {}", idxLocation);
fail("still waiting for lock release at [" + idxLocation + "]");
} catch (IOException ioe) {
fail("Got an IOException: " + ioe);
}
});
OptionSet options = parser.parse("-d", translogDir.toAbsolutePath().toString(), "-b");
logger.info("--> running truncate translog command for [{}]", translogDir.toAbsolutePath());
ttc.execute(t, options, null /* TODO: env should be real here, and ttc should actually use it... */);
logger.info("--> output:\n{}", t.getOutput());
}
logger.info("--> starting the replica node to test recovery");
internalCluster().startNode();
ensureGreen("test");
assertHitCount(client().prepareSearch("test").setPreference("_replica").setQuery(matchAllQuery()).get(), totalDocs);
final RecoveryResponse recoveryResponse = client().admin().indices().prepareRecoveries("test").setActiveOnly(false).get();
final RecoveryState replicaRecoveryState = recoveryResponse.shardRecoveryStates().get("test").stream()
.filter(recoveryState -> recoveryState.getPrimary() == false).findFirst().get();
// the replica translog was disabled so it doesn't know what hte global checkpoint is and thus can't do ops based recovery
assertThat(replicaRecoveryState.getIndex().toString(), replicaRecoveryState.getIndex().recoveredFileCount(), greaterThan(0));
}
private Set<Path> getTranslogDirs(String indexName) throws IOException {
ClusterState state = client().admin().cluster().prepareState().get().getState();
GroupShardsIterator shardIterators = state.getRoutingTable().activePrimaryShardsGrouped(new String[]{indexName}, false);
final Index idx = state.metaData().index(indexName).getIndex();
List<ShardIterator> iterators = iterableAsArrayList(shardIterators);
ShardIterator shardIterator = RandomPicks.randomFrom(random(), iterators);
ShardRouting shardRouting = shardIterator.nextOrNull();
@ -186,11 +332,17 @@ public class TruncateTranslogIT extends ESIntegTestCase {
assertTrue(shardRouting.primary());
assertTrue(shardRouting.assignedToNode());
String nodeId = shardRouting.currentNodeId();
ShardId shardId = shardRouting.shardId();
return getTranslogDirs(nodeId, shardId);
}
private Set<Path> getTranslogDirs(String nodeId, ShardId shardId) {
NodesStatsResponse nodeStatses = client().admin().cluster().prepareNodesStats(nodeId).setFs(true).get();
Set<Path> translogDirs = new TreeSet<>(); // treeset makes sure iteration order is deterministic
for (FsInfo.Path fsPath : nodeStatses.getNodes().get(0).getFs()) {
String path = fsPath.getPath();
final String relativeDataLocationPath = "indices/"+ idx.getUUID() +"/" + Integer.toString(shardRouting.getId()) + "/translog";
final String relativeDataLocationPath = "indices/"+ shardId.getIndex().getUUID() +"/" + Integer.toString(shardId.getId())
+ "/translog";
Path translogPath = PathUtils.get(path).resolve(relativeDataLocationPath);
if (Files.isDirectory(translogPath)) {
translogDirs.add(translogPath);
@ -201,6 +353,10 @@ public class TruncateTranslogIT extends ESIntegTestCase {
private void corruptRandomTranslogFiles(String indexName) throws IOException {
Set<Path> translogDirs = getTranslogDirs(indexName);
corruptTranslogFiles(translogDirs);
}
private void corruptTranslogFiles(Set<Path> translogDirs) throws IOException {
Set<Path> files = new TreeSet<>(); // treeset makes sure iteration order is deterministic
for (Path translogDir : translogDirs) {
if (Files.isDirectory(translogDir)) {