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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.spark.network.shuffle;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.io.CharStreams;
import org.apache.spark.network.shuffle.protocol.ExecutorShuffleInfo;
import org.apache.spark.network.util.SystemPropertyConfigProvider;
import org.apache.spark.network.util.TransportConf;
import org.apache.spark.network.shuffle.ExternalShuffleBlockResolver.AppExecId;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;
public class ExternalShuffleBlockResolverSuite {
static String sortBlock0 = "Hello!";
static String sortBlock1 = "World!";
static String hashBlock0 = "Elementary";
static String hashBlock1 = "Tabular";
static TestShuffleDataContext dataContext;
static TransportConf conf = new TransportConf("shuffle", new SystemPropertyConfigProvider());
@BeforeClass
public static void beforeAll() throws IOException {
dataContext = new TestShuffleDataContext(2, 5);
dataContext.create();
// Write some sort and hash data.
dataContext.insertSortShuffleData(0, 0,
new byte[][] { sortBlock0.getBytes(), sortBlock1.getBytes() } );
dataContext.insertHashShuffleData(1, 0,
new byte[][] { hashBlock0.getBytes(), hashBlock1.getBytes() } );
}
@AfterClass
public static void afterAll() {
dataContext.cleanup();
}
@Test
public void testBadRequests() throws IOException {
ExternalShuffleBlockResolver resolver = new ExternalShuffleBlockResolver(conf, null);
// Unregistered executor
try {
resolver.getBlockData("app0", "exec1", "shuffle_1_1_0");
fail("Should have failed");
} catch (RuntimeException e) {
assertTrue("Bad error message: " + e, e.getMessage().contains("not registered"));
}
// Invalid shuffle manager
resolver.registerExecutor("app0", "exec2", dataContext.createExecutorInfo("foobar"));
try {
resolver.getBlockData("app0", "exec2", "shuffle_1_1_0");
fail("Should have failed");
} catch (UnsupportedOperationException e) {
// pass
}
// Nonexistent shuffle block
resolver.registerExecutor("app0", "exec3",
dataContext.createExecutorInfo("sort"));
try {
resolver.getBlockData("app0", "exec3", "shuffle_1_1_0");
fail("Should have failed");
} catch (Exception e) {
// pass
}
}
@Test
public void testSortShuffleBlocks() throws IOException {
ExternalShuffleBlockResolver resolver = new ExternalShuffleBlockResolver(conf, null);
resolver.registerExecutor("app0", "exec0",
dataContext.createExecutorInfo("sort"));
InputStream block0Stream =
resolver.getBlockData("app0", "exec0", "shuffle_0_0_0").createInputStream();
String block0 = CharStreams.toString(new InputStreamReader(block0Stream));
block0Stream.close();
assertEquals(sortBlock0, block0);
InputStream block1Stream =
resolver.getBlockData("app0", "exec0", "shuffle_0_0_1").createInputStream();
String block1 = CharStreams.toString(new InputStreamReader(block1Stream));
block1Stream.close();
assertEquals(sortBlock1, block1);
}
@Test
public void testHashShuffleBlocks() throws IOException {
ExternalShuffleBlockResolver resolver = new ExternalShuffleBlockResolver(conf, null);
resolver.registerExecutor("app0", "exec0",
dataContext.createExecutorInfo("hash"));
InputStream block0Stream =
resolver.getBlockData("app0", "exec0", "shuffle_1_0_0").createInputStream();
String block0 = CharStreams.toString(new InputStreamReader(block0Stream));
block0Stream.close();
assertEquals(hashBlock0, block0);
InputStream block1Stream =
resolver.getBlockData("app0", "exec0", "shuffle_1_0_1").createInputStream();
String block1 = CharStreams.toString(new InputStreamReader(block1Stream));
block1Stream.close();
assertEquals(hashBlock1, block1);
}
@Test
public void jsonSerializationOfExecutorRegistration() throws IOException {
ObjectMapper mapper = new ObjectMapper();
AppExecId appId = new AppExecId("foo", "bar");
String appIdJson = mapper.writeValueAsString(appId);
AppExecId parsedAppId = mapper.readValue(appIdJson, AppExecId.class);
assertEquals(parsedAppId, appId);
ExecutorShuffleInfo shuffleInfo =
new ExecutorShuffleInfo(new String[]{"/bippy", "/flippy"}, 7, "hash");
String shuffleJson = mapper.writeValueAsString(shuffleInfo);
ExecutorShuffleInfo parsedShuffleInfo =
mapper.readValue(shuffleJson, ExecutorShuffleInfo.class);
assertEquals(parsedShuffleInfo, shuffleInfo);
// Intentionally keep these hard-coded strings in here, to check backwards-compatability.
// its not legacy yet, but keeping this here in case anybody changes it
String legacyAppIdJson = "{\"appId\":\"foo\", \"execId\":\"bar\"}";
assertEquals(appId, mapper.readValue(legacyAppIdJson, AppExecId.class));
String legacyShuffleJson = "{\"localDirs\": [\"/bippy\", \"/flippy\"], " +
"\"subDirsPerLocalDir\": 7, \"shuffleManager\": \"hash\"}";
assertEquals(shuffleInfo, mapper.readValue(legacyShuffleJson, ExecutorShuffleInfo.class));
}
}
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