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TestShardEjector.java
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TestShardEjector.java
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/*
* Licensed 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 com.facebook.presto.raptor.storage;
import com.facebook.presto.client.NodeVersion;
import com.facebook.presto.metadata.PrestoNode;
import com.facebook.presto.raptor.backup.BackupStore;
import com.facebook.presto.raptor.metadata.ColumnInfo;
import com.facebook.presto.raptor.metadata.MetadataDao;
import com.facebook.presto.raptor.metadata.ShardInfo;
import com.facebook.presto.raptor.metadata.ShardManager;
import com.facebook.presto.raptor.metadata.ShardMetadata;
import com.facebook.presto.spi.Node;
import com.facebook.presto.spi.NodeManager;
import com.facebook.presto.spi.predicate.TupleDomain;
import com.facebook.presto.testing.TestingNodeManager;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import io.airlift.units.Duration;
import org.skife.jdbi.v2.DBI;
import org.skife.jdbi.v2.Handle;
import org.skife.jdbi.v2.IDBI;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import java.io.File;
import java.net.URI;
import java.util.List;
import java.util.Optional;
import java.util.OptionalInt;
import java.util.OptionalLong;
import java.util.Set;
import java.util.UUID;
import static com.facebook.presto.raptor.metadata.SchemaDaoUtil.createTablesWithRetry;
import static com.facebook.presto.raptor.metadata.TestDatabaseShardManager.createShardManager;
import static com.facebook.presto.spi.type.BigintType.BIGINT;
import static com.google.common.io.Files.createTempDir;
import static com.google.common.io.MoreFiles.deleteRecursively;
import static com.google.common.io.RecursiveDeleteOption.ALLOW_INSECURE;
import static java.util.UUID.randomUUID;
import static java.util.concurrent.TimeUnit.HOURS;
import static java.util.stream.Collectors.toSet;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertFalse;
import static org.testng.Assert.assertTrue;
@Test(singleThreaded = true)
public class TestShardEjector
{
private IDBI dbi;
private Handle dummyHandle;
private ShardManager shardManager;
private File dataDir;
private StorageService storageService;
@BeforeMethod
public void setup()
{
dbi = new DBI("jdbc:h2:mem:test" + System.nanoTime());
dummyHandle = dbi.open();
createTablesWithRetry(dbi);
shardManager = createShardManager(dbi);
dataDir = createTempDir();
storageService = new FileStorageService(dataDir);
storageService.start();
}
@AfterMethod(alwaysRun = true)
public void teardown()
throws Exception
{
if (dummyHandle != null) {
dummyHandle.close();
}
if (dataDir != null) {
deleteRecursively(dataDir.toPath(), ALLOW_INSECURE);
}
}
@Test(invocationCount = 20)
public void testEjector()
throws Exception
{
NodeManager nodeManager = createNodeManager("node1", "node2", "node3", "node4", "node5");
ShardEjector ejector = new ShardEjector(
nodeManager.getCurrentNode().getNodeIdentifier(),
nodeManager::getWorkerNodes,
shardManager,
storageService,
new Duration(1, HOURS),
Optional.of(new TestingBackupStore()),
"test");
List<ShardInfo> shards = ImmutableList.<ShardInfo>builder()
.add(shardInfo("node1", 14))
.add(shardInfo("node1", 13))
.add(shardInfo("node1", 12))
.add(shardInfo("node1", 11))
.add(shardInfo("node1", 10))
.add(shardInfo("node1", 10))
.add(shardInfo("node1", 10))
.add(shardInfo("node1", 10))
.add(shardInfo("node2", 5))
.add(shardInfo("node2", 5))
.add(shardInfo("node3", 10))
.add(shardInfo("node4", 10))
.add(shardInfo("node5", 10))
.add(shardInfo("node6", 200))
.build();
long tableId = createTable("test");
List<ColumnInfo> columns = ImmutableList.of(new ColumnInfo(1, BIGINT));
shardManager.createTable(tableId, columns, false, OptionalLong.empty());
long transactionId = shardManager.beginTransaction();
shardManager.commitShards(transactionId, tableId, columns, shards, Optional.empty(), 0);
for (ShardInfo shard : shards.subList(0, 8)) {
File file = storageService.getStorageFile(shard.getShardUuid());
storageService.createParents(file);
assertTrue(file.createNewFile());
}
ejector.process();
shardManager.getShardNodes(tableId, TupleDomain.all());
Set<UUID> ejectedShards = shards.subList(0, 4).stream()
.map(ShardInfo::getShardUuid)
.collect(toSet());
Set<UUID> keptShards = shards.subList(4, 8).stream()
.map(ShardInfo::getShardUuid)
.collect(toSet());
Set<UUID> remaining = uuids(shardManager.getNodeShards("node1"));
for (UUID uuid : ejectedShards) {
assertFalse(remaining.contains(uuid));
assertFalse(storageService.getStorageFile(uuid).exists());
}
assertEquals(remaining, keptShards);
for (UUID uuid : keptShards) {
assertTrue(storageService.getStorageFile(uuid).exists());
}
Set<UUID> others = ImmutableSet.<UUID>builder()
.addAll(uuids(shardManager.getNodeShards("node2")))
.addAll(uuids(shardManager.getNodeShards("node3")))
.addAll(uuids(shardManager.getNodeShards("node4")))
.addAll(uuids(shardManager.getNodeShards("node5")))
.build();
assertTrue(others.containsAll(ejectedShards));
}
private long createTable(String name)
{
return dbi.onDemand(MetadataDao.class).insertTable("test", name, false, false, null, 0);
}
private static Set<UUID> uuids(Set<ShardMetadata> metadata)
{
return metadata.stream()
.map(ShardMetadata::getShardUuid)
.collect(toSet());
}
private static ShardInfo shardInfo(String node, long size)
{
return new ShardInfo(randomUUID(), OptionalInt.empty(), ImmutableSet.of(node), ImmutableList.of(), 1, size, size * 2, 0);
}
private static NodeManager createNodeManager(String current, String... others)
{
Node currentNode = createTestingNode(current);
TestingNodeManager nodeManager = new TestingNodeManager(currentNode);
for (String other : others) {
nodeManager.addNode(createTestingNode(other));
}
return nodeManager;
}
private static Node createTestingNode(String identifier)
{
return new PrestoNode(identifier, URI.create("http://test"), NodeVersion.UNKNOWN, false);
}
private static class TestingBackupStore
implements BackupStore
{
@Override
public void backupShard(UUID uuid, File source)
{
throw new UnsupportedOperationException();
}
@Override
public void restoreShard(UUID uuid, File target)
{
throw new UnsupportedOperationException();
}
@Override
public boolean deleteShard(UUID uuid)
{
throw new UnsupportedOperationException();
}
@Override
public boolean shardExists(UUID uuid)
{
return true;
}
}
}