/**
* 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.tez.runtime.library.shuffle.common;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.ByteBuffer;
import java.util.List;
import javax.crypto.SecretKey;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.DataInputByteBuffer;
import org.apache.hadoop.io.DataOutputBuffer;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.io.compress.CompressionCodec;
import org.apache.hadoop.security.token.Token;
import org.apache.tez.common.security.JobTokenIdentifier;
import org.apache.tez.common.security.JobTokenSecretManager;
import org.apache.tez.runtime.library.api.TezRuntimeConfiguration;
import org.apache.tez.runtime.library.common.InputAttemptIdentifier;
import org.apache.tez.runtime.library.common.sort.impl.IFile;
import org.apache.tez.runtime.library.shuffle.common.HttpConnection.HttpConnectionParams;
import org.apache.tez.runtime.library.shuffle.common.HttpConnection.HttpConnectionParamsBuilder;
import org.apache.tez.runtime.library.shuffle.impl.ShuffleUserPayloads.DataMovementEventPayloadProto;
public class ShuffleUtils {
private static final Log LOG = LogFactory.getLog(ShuffleUtils.class);
public static String SHUFFLE_HANDLER_SERVICE_ID = "mapreduce_shuffle";
public static SecretKey getJobTokenSecretFromTokenBytes(ByteBuffer meta)
throws IOException {
DataInputByteBuffer in = new DataInputByteBuffer();
in.reset(meta);
Token<JobTokenIdentifier> jt = new Token<JobTokenIdentifier>();
jt.readFields(in);
SecretKey sk = JobTokenSecretManager.createSecretKey(jt.getPassword());
return sk;
}
public static ByteBuffer convertJobTokenToBytes(
Token<JobTokenIdentifier> jobToken) throws IOException {
DataOutputBuffer dob = new DataOutputBuffer();
jobToken.write(dob);
ByteBuffer bb = ByteBuffer.wrap(dob.getData(), 0, dob.getLength());
return bb;
}
public static int deserializeShuffleProviderMetaData(ByteBuffer meta)
throws IOException {
DataInputByteBuffer in = new DataInputByteBuffer();
try {
in.reset(meta);
int port = in.readInt();
return port;
} finally {
in.close();
}
}
@SuppressWarnings("resource")
public static void shuffleToMemory(byte[] shuffleData,
InputStream input, int decompressedLength, int compressedLength,
CompressionCodec codec, boolean ifileReadAhead, int ifileReadAheadLength,
Log LOG, String identifier) throws IOException {
try {
IFile.Reader.readToMemory(shuffleData, input, compressedLength, codec,
ifileReadAhead, ifileReadAheadLength);
// metrics.inputBytes(shuffleData.length);
LOG.info("Read " + shuffleData.length + " bytes from input for "
+ identifier);
} catch (IOException ioe) {
// Close the streams
IOUtils.cleanup(LOG, input);
// Re-throw
throw ioe;
}
}
public static void shuffleToDisk(OutputStream output, String hostIdentifier,
InputStream input, long compressedLength, Log LOG, String identifier)
throws IOException {
// Copy data to local-disk
long bytesLeft = compressedLength;
try {
final int BYTES_TO_READ = 64 * 1024;
byte[] buf = new byte[BYTES_TO_READ];
while (bytesLeft > 0) {
int n = input.read(buf, 0, (int) Math.min(bytesLeft, BYTES_TO_READ));
if (n < 0) {
throw new IOException("read past end of stream reading "
+ identifier);
}
output.write(buf, 0, n);
bytesLeft -= n;
// metrics.inputBytes(n);
}
LOG.info("Read " + (compressedLength - bytesLeft)
+ " bytes from input for " + identifier);
output.close();
} catch (IOException ioe) {
// Close the streams
IOUtils.cleanup(LOG, input, output);
// Re-throw
throw ioe;
}
// Sanity check
if (bytesLeft != 0) {
throw new IOException("Incomplete map output received for " +
identifier + " from " +
hostIdentifier + " (" +
bytesLeft + " bytes missing of " +
compressedLength + ")");
}
}
// TODO NEWTEZ handle ssl shuffle
public static StringBuilder constructBaseURIForShuffleHandler(String host,
int port, int partition, String appId, boolean sslShuffle) {
return constructBaseURIForShuffleHandler(host + ":" + String.valueOf(port),
partition, appId, sslShuffle);
}
public static StringBuilder constructBaseURIForShuffleHandler(String hostIdentifier,
int partition, String appId, boolean sslShuffle) {
final String http_protocol = (sslShuffle) ? "https://" : "http://";
StringBuilder sb = new StringBuilder(http_protocol);
sb.append(hostIdentifier);
sb.append("/");
sb.append("mapOutput?job=");
sb.append(appId.replace("application", "job"));
sb.append("&reduce=");
sb.append(String.valueOf(partition));
sb.append("&map=");
return sb;
}
public static URL constructInputURL(String baseURI,
List<InputAttemptIdentifier> inputs, boolean keepAlive) throws MalformedURLException {
StringBuilder url = new StringBuilder(baseURI);
boolean first = true;
for (InputAttemptIdentifier input : inputs) {
if (first) {
first = false;
url.append(input.getPathComponent());
} else {
url.append(",").append(input.getPathComponent());
}
}
//It is possible to override keep-alive setting in cluster by adding keepAlive in url.
//Refer MAPREDUCE-5787 to enable/disable keep-alive in the cluster.
if (keepAlive) {
url.append("&keepAlive=true");
}
return new URL(url.toString());
}
public static HttpConnectionParams constructHttpShuffleConnectionParams(
Configuration conf) {
HttpConnectionParamsBuilder builder = new HttpConnectionParamsBuilder();
int connectionTimeout =
conf.getInt(TezRuntimeConfiguration.TEZ_RUNTIME_SHUFFLE_CONNECT_TIMEOUT,
TezRuntimeConfiguration.TEZ_RUNTIME_SHUFFLE_STALLED_COPY_TIMEOUT_DEFAULT);
int readTimeout =
conf.getInt(TezRuntimeConfiguration.TEZ_RUNTIME_SHUFFLE_READ_TIMEOUT,
TezRuntimeConfiguration.TEZ_RUNTIME_SHUFFLE_READ_TIMEOUT_DEFAULT);
int bufferSize =
conf.getInt(TezRuntimeConfiguration.TEZ_RUNTIME_SHUFFLE_BUFFER_SIZE,
TezRuntimeConfiguration.TEZ_RUNTIME_SHUFFLE_BUFFER_SIZE_DEFAULT);
boolean keepAlive =
conf.getBoolean(TezRuntimeConfiguration.TEZ_RUNTIME_SHUFFLE_KEEP_ALIVE_ENABLED,
TezRuntimeConfiguration.TEZ_RUNTIME_SHUFFLE_KEEP_ALIVE_ENABLED_DEFAULT);
int keepAliveMaxConnections =
conf.getInt(
TezRuntimeConfiguration.TEZ_RUNTIME_SHUFFLE_KEEP_ALIVE_MAX_CONNECTIONS,
TezRuntimeConfiguration.TEZ_RUNTIME_SHUFFLE_KEEP_ALIVE_MAX_CONNECTIONS_DEFAULT);
if (keepAlive) {
System.setProperty("sun.net.http.errorstream.enableBuffering", "true");
System.setProperty("http.maxConnections",
String.valueOf(keepAliveMaxConnections));
LOG.info("Set keepAlive max connections: " + keepAliveMaxConnections);
}
builder.setTimeout(connectionTimeout, readTimeout)
.setBufferSize(bufferSize)
.setKeepAlive(keepAlive, keepAliveMaxConnections);
boolean sslShuffle = conf.getBoolean(TezRuntimeConfiguration.TEZ_RUNTIME_SHUFFLE_ENABLE_SSL,
TezRuntimeConfiguration.TEZ_RUNTIME_SHUFFLE_ENABLE_SSL_DEFAULT);
builder.setSSL(sslShuffle, conf);
return builder.build();
}
public static String stringify(DataMovementEventPayloadProto dmProto) {
StringBuilder sb = new StringBuilder();
sb.append("[");
sb.append("hasEmptyPartitions: ").append(dmProto.hasEmptyPartitions()).append(", ");
sb.append("host: " + dmProto.getHost()).append(", ");
sb.append("port: " + dmProto.getPort()).append(", ");
sb.append("pathComponent: " + dmProto.getPathComponent()).append(", ");
sb.append("runDuration: " + dmProto.getRunDuration()).append(", ");
sb.append("hasDataInEvent: " + dmProto.hasData());
sb.append("]");
return sb.toString();
}
}