HDFS-11081. Ozone:SCM: Add support for registerNode in datanode. Contributed by Anu Engineer.

This commit is contained in:
Anu Engineer 2016-11-16 13:44:24 -08:00 committed by Owen O'Malley
parent 2b8b3754f6
commit 8bd85268e6
33 changed files with 3383 additions and 182 deletions

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@ -913,7 +913,7 @@ public class DataNode extends ReconfigurableBase
* @throws UnknownHostException if the dfs.datanode.dns.interface
* option is used and the hostname can not be determined
*/
private static String getHostName(Configuration config)
public static String getHostName(Configuration config)
throws UnknownHostException {
String name = config.get(DFS_DATANODE_HOST_NAME_KEY);
if (name == null) {

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@ -1,43 +1,61 @@
/**
* 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
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.
* 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.hadoop.ozone;
import com.google.common.base.Optional;
import com.google.common.net.HostAndPort;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.scm.ScmConfigKeys;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.net.InetSocketAddress;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import static org.apache.hadoop.ozone.OzoneConfigKeys.*;
import static org.apache.hadoop.ozone.OzoneConfigKeys.OZONE_SCM_DEADNODE_INTERVAL_DEFAULT;
import static org.apache.hadoop.ozone.OzoneConfigKeys.OZONE_SCM_DEADNODE_INTERVAL_MS;
import static org.apache.hadoop.ozone.OzoneConfigKeys.OZONE_SCM_HEARTBEAT_INTERVAL_SECONDS;
import static org.apache.hadoop.ozone.OzoneConfigKeys.OZONE_SCM_HEARTBEAT_PROCESS_INTERVAL_MS;
import static org.apache.hadoop.ozone.OzoneConfigKeys.OZONE_SCM_STALENODE_INTERVAL_DEFAULT;
import static org.apache.hadoop.ozone.OzoneConfigKeys.OZONE_SCM_STALENODE_INTERVAL_MS;
import static org.apache.hadoop.ozone.OzoneConfigKeys
.OZONE_SCM_DEADNODE_INTERVAL_DEFAULT;
import static org.apache.hadoop.ozone.OzoneConfigKeys
.OZONE_SCM_DEADNODE_INTERVAL_MS;
import static org.apache.hadoop.ozone.OzoneConfigKeys
.OZONE_SCM_HEARTBEAT_INTERVAL_SECONDS;
import static org.apache.hadoop.ozone.OzoneConfigKeys
.OZONE_SCM_HEARTBEAT_LOG_WARN_DEFAULT;
import static org.apache.hadoop.ozone.OzoneConfigKeys
.OZONE_SCM_HEARTBEAT_LOG_WARN_INTERVAL_COUNT;
import static org.apache.hadoop.ozone.OzoneConfigKeys
.OZONE_SCM_HEARTBEAT_PROCESS_INTERVAL_MS;
import static org.apache.hadoop.ozone.OzoneConfigKeys
.OZONE_SCM_HEARTBEAT_RPC_TIMEOUT;
import static org.apache.hadoop.ozone.OzoneConfigKeys
.OZONE_SCM_HEARTBEAT_RPC_TIMEOUT_DEFAULT;
import static org.apache.hadoop.ozone.OzoneConfigKeys
.OZONE_SCM_STALENODE_INTERVAL_DEFAULT;
import static org.apache.hadoop.ozone.OzoneConfigKeys
.OZONE_SCM_STALENODE_INTERVAL_MS;
/**
* Utility methods for Ozone and Container Clients.
@ -51,6 +69,7 @@ import static org.apache.hadoop.ozone.OzoneConfigKeys.OZONE_SCM_STALENODE_INTERV
public final class OzoneClientUtils {
private static final Logger LOG = LoggerFactory.getLogger(
OzoneClientUtils.class);
private static final int NO_PORT = -1;
/**
* The service ID of the solitary Ozone SCM service.
@ -139,7 +158,7 @@ public final class OzoneClientUtils {
return NetUtils.createSocketAddr(
host.or(OZONE_SCM_CLIENT_BIND_HOST_DEFAULT) + ":" +
port.or(OZONE_SCM_CLIENT_PORT_DEFAULT));
port.or(OZONE_SCM_CLIENT_PORT_DEFAULT));
}
/**
@ -160,7 +179,7 @@ public final class OzoneClientUtils {
return NetUtils.createSocketAddr(
host.or(OZONE_SCM_DATANODE_BIND_HOST_DEFAULT) + ":" +
port.or(OZONE_SCM_DATANODE_PORT_DEFAULT));
port.or(OZONE_SCM_DATANODE_PORT_DEFAULT));
}
/**
@ -168,7 +187,7 @@ public final class OzoneClientUtils {
* Each config value may be absent, or if present in the format
* host:port (the :port part is optional).
*
* @param conf
* @param conf - Conf
* @param keys a list of configuration key names.
*
* @return first hostname component found from the given keys, or absent.
@ -176,51 +195,65 @@ public final class OzoneClientUtils {
* or host:port format.
*/
static Optional<String> getHostNameFromConfigKeys(
Configuration conf, String ... keys) {
Configuration conf, String... keys) {
for (final String key : keys) {
final String value = conf.getTrimmed(key);
if (value != null && !value.isEmpty()) {
String[] splits = value.split(":");
if(splits.length < 1 || splits.length > 2) {
throw new IllegalArgumentException(
"Invalid value " + value + " for config key " + key +
". It should be in 'host' or 'host:port' format");
}
return Optional.of(splits[0]);
final Optional<String> hostName = getHostName(value);
if (hostName.isPresent()) {
return hostName;
}
}
return Optional.absent();
}
/**
* Gets the hostname or Indicates that it is absent.
* @param value host or host:port
* @return hostname
*/
public static Optional<String> getHostName(String value) {
if ((value == null) || value.isEmpty()) {
return Optional.absent();
}
return Optional.of(HostAndPort.fromString(value).getHostText());
}
/**
* Gets the port if there is one, throws otherwise.
* @param value String in host:port format.
* @return Port
*/
public static Optional<Integer> getHostPort(String value) {
if((value == null) || value.isEmpty()) {
return Optional.absent();
}
int port = HostAndPort.fromString(value).getPortOrDefault(NO_PORT);
if (port == NO_PORT) {
return Optional.absent();
} else {
return Optional.of(port);
}
}
/**
* Retrieve the port number, trying the supplied config keys in order.
* Each config value may be absent, or if present in the format
* host:port (the :port part is optional).
*
* @param conf
* @param conf Conf
* @param keys a list of configuration key names.
*
* @return first port number component found from the given keys, or absent.
* @throws IllegalArgumentException if any values are not in the 'host'
* or host:port format.
*/
static Optional<Integer> getPortNumberFromConfigKeys(
Configuration conf, String ... keys) {
public static Optional<Integer> getPortNumberFromConfigKeys(
Configuration conf, String... keys) {
for (final String key : keys) {
final String value = conf.getTrimmed(key);
if (value != null && !value.isEmpty()) {
String[] splits = value.split(":");
if(splits.length < 1 || splits.length > 2) {
throw new IllegalArgumentException(
"Invalid value " + value + " for config key " + key +
". It should be in 'host' or 'host:port' format");
}
if (splits.length == 2) {
return Optional.of(Integer.parseInt(splits[1]));
}
final Optional<Integer> hostPort = getHostPort(value);
if (hostPort.isPresent()) {
return hostPort;
}
}
return Optional.absent();
@ -259,7 +292,7 @@ public final class OzoneClientUtils {
* @return long
*/
private static long sanitizeUserArgs(long valueTocheck, long baseValue,
long minFactor, long maxFactor)
long minFactor, long maxFactor)
throws IllegalArgumentException {
if ((valueTocheck >= (baseValue * minFactor)) &&
(valueTocheck <= (baseValue * maxFactor))) {
@ -270,7 +303,6 @@ public final class OzoneClientUtils {
throw new IllegalArgumentException(errMsg);
}
/**
* Returns the interval in which the heartbeat processor thread runs.
*
@ -282,7 +314,6 @@ public final class OzoneClientUtils {
OZONE_SCM_HEARTBEAT_PROCESS_INTERVAL_MS_DEFAULT);
}
/**
* Heartbeat Interval - Defines the heartbeat frequency from a datanode to
* SCM.
@ -295,7 +326,6 @@ public final class OzoneClientUtils {
OZONE_SCM_HEARBEAT_INTERVAL_SECONDS_DEFAULT);
}
/**
* Get the Stale Node interval, which is used by SCM to flag a datanode as
* stale, if the heartbeat from that node has been missing for this duration.
@ -340,7 +370,6 @@ public final class OzoneClientUtils {
return staleNodeIntevalMs;
}
/**
* Gets the interval for dead node flagging. This has to be a value that is
* greater than stale node value, and by transitive relation we also know
@ -374,8 +403,42 @@ public final class OzoneClientUtils {
* @param conf Configration
* @return - int -- Number of HBs to process
*/
public static int getMaxHBToProcessPerLoop(Configuration conf){
public static int getMaxHBToProcessPerLoop(Configuration conf) {
return conf.getInt(OZONE_SCM_MAX_HB_COUNT_TO_PROCESS,
OZONE_SCM_MAX_HB_COUNT_TO_PROCESS_DEFAULT);
}
/**
* Timeout value for the RPC from Datanode to SCM, primarily used for
* Heartbeats and container reports.
*
* @param conf - Ozone Config
* @return - Rpc timeout in Milliseconds.
*/
public static long getScmRpcTimeOutInMilliseconds(Configuration conf) {
return conf.getTimeDuration(OZONE_SCM_HEARTBEAT_RPC_TIMEOUT,
OZONE_SCM_HEARTBEAT_RPC_TIMEOUT_DEFAULT, TimeUnit.MILLISECONDS);
}
/**
* Log Warn interval.
*
* @param conf - Ozone Config
* @return - Log warn interval.
*/
public static int getLogWarnInterval(Configuration conf) {
return conf.getInt(OZONE_SCM_HEARTBEAT_LOG_WARN_INTERVAL_COUNT,
OZONE_SCM_HEARTBEAT_LOG_WARN_DEFAULT);
}
/**
* returns the Container port.
* @param conf - Conf
* @return port number.
*/
public static int getContainerPort(Configuration conf) {
return conf.getInt(ScmConfigKeys.DFS_CONTAINER_IPC_PORT, ScmConfigKeys
.DFS_CONTAINER_IPC_PORT_DEFAULT);
}
}

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@ -43,8 +43,8 @@ public final class OzoneConfigKeys {
"ozone.trace.enabled";
public static final boolean OZONE_TRACE_ENABLED_DEFAULT = false;
public static final String OZONE_METADATA_DIRS =
"ozone.metadata.dirs";
public static final String OZONE_CONTAINER_METADATA_DIRS =
"ozone.container.metadata.dirs";
public static final String OZONE_KEY_CACHE = "ozone.key.cache.size";
public static final int OZONE_KEY_CACHE_DEFAULT = 1024;
@ -94,6 +94,54 @@ public final class OzoneConfigKeys {
public static final long OZONE_SCM_STALENODE_INTERVAL_DEFAULT =
OZONE_SCM_HEARBEAT_INTERVAL_SECONDS_DEFAULT * 1000L * 3L;
public static final String OZONE_SCM_CONTAINER_THREADS =
"ozone.scm.container.threads";
public static final int OZONE_SCM_CONTAINER_THREADS_DEFAULT =
Runtime.getRuntime().availableProcessors() * 2;
public static final String OZONE_SCM_HEARTBEAT_RPC_TIMEOUT =
"ozone.scm.heartbeat.rpc-timeout";
public static final long OZONE_SCM_HEARTBEAT_RPC_TIMEOUT_DEFAULT =
100;
/**
* Defines how frequently we will log the missing of heartbeat to a specific
* SCM. In the default case we will write a warning message for each 10
* sequential heart beats that we miss to a specific SCM. This is to avoid
* overrunning the log with lots of HB missed Log statements.
*/
public static final String OZONE_SCM_HEARTBEAT_LOG_WARN_INTERVAL_COUNT =
"ozone.scm.heartbeat.log.warn.interval.count";
public static final int OZONE_SCM_HEARTBEAT_LOG_WARN_DEFAULT =
10;
public static final String OZONE_CONTAINER_TASK_WAIT =
"ozone.container.task.wait.seconds";
public static final long OZONE_CONTAINER_TASK_WAIT_DEFAULT = 5;
// ozone.scm.names key is a set of DNS | DNS:PORT | IP Address | IP:PORT.
// Written as a comma separated string. e.g. scm1, scm2:8020, 7.7.7.7:7777
//
// If this key is not specified datanodes will not be able to find
// SCM. The SCM membership can be dynamic, so this key should contain
// all possible SCM names. Once the SCM leader is discovered datanodes will
// get the right list of SCMs to heartbeat to from the leader.
// While it is good for the datanodes to know the names of all SCM nodes,
// it is sufficient to actually know the name of on working SCM. That SCM
// will be able to return the information about other SCMs that are part of
// the SCM replicated Log.
//
//In case of a membership change, any one of the SCM machines will be
// able to send back a new list to the datanodes.
public static final String OZONE_SCM_NAMES = "ozone.scm.names";
public static final int OZONE_SCM_DEFAULT_PORT = 9862;
// File Name and path where datanode ID is to written to.
// if this value is not set then container startup will fail.
public static final String OZONE_SCM_DATANODE_ID = "ozone.scm.datanode.id";
/**
* There is no need to instantiate this class.

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@ -0,0 +1,213 @@
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.container.common.statemachine;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.ozone.OzoneClientUtils;
import org.apache.hadoop.ozone.OzoneConfigKeys;
import org.apache.hadoop.util.Time;
import org.apache.hadoop.util.concurrent.HadoopExecutors;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.Closeable;
import java.io.IOException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
/**
* State Machine Class.
*/
public class DatanodeStateMachine implements Closeable {
@VisibleForTesting
static final Logger LOG =
LoggerFactory.getLogger(DatanodeStateMachine.class);
private final ExecutorService executorService;
private final Configuration conf;
private final SCMConnectionManager connectionManager;
private final long taskWaitTime;
private final long heartbeatFrequency;
private StateContext context;
/**
* Constructs a container state machine.
*
* @param conf - Configration.
*/
public DatanodeStateMachine(Configuration conf) {
this.conf = conf;
executorService = HadoopExecutors.newScheduledThreadPool(
this.conf.getInt(OzoneConfigKeys.OZONE_SCM_CONTAINER_THREADS,
OzoneConfigKeys.OZONE_SCM_CONTAINER_THREADS_DEFAULT),
new ThreadFactoryBuilder().setDaemon(true)
.setNameFormat("Container State Machine Thread - %d").build());
connectionManager = new SCMConnectionManager(conf);
context = new StateContext(this.conf, DatanodeStates.getInitState(), this);
taskWaitTime = this.conf.getLong(OzoneConfigKeys.OZONE_CONTAINER_TASK_WAIT,
OzoneConfigKeys.OZONE_CONTAINER_TASK_WAIT_DEFAULT);
heartbeatFrequency = OzoneClientUtils.getScmHeartbeatInterval(conf);
}
/**
* Returns the Connection manager for this state machine.
*
* @return - SCMConnectionManager.
*/
public SCMConnectionManager getConnectionManager() {
return connectionManager;
}
/**
* Runs the state machine at a fixed frequency.
*/
public void start() throws IOException {
long now = 0;
long nextHB = 0;
while (context.getState() != DatanodeStates.SHUTDOWN) {
try {
nextHB = Time.monotonicNow() + heartbeatFrequency;
context.execute(executorService, taskWaitTime, TimeUnit.SECONDS);
now = Time.monotonicNow();
if (now < nextHB) {
Thread.sleep(nextHB - now);
}
} catch (InterruptedException | ExecutionException | TimeoutException e) {
LOG.error("Unable to finish the execution", e);
}
}
}
/**
* Gets the current context.
*
* @return StateContext
*/
public StateContext getContext() {
return context;
}
/**
* Sets the current context.
*
* @param context - Context
*/
public void setContext(StateContext context) {
this.context = context;
}
/**
* Closes this stream and releases any system resources associated with it. If
* the stream is already closed then invoking this method has no effect.
* <p>
* <p> As noted in {@link AutoCloseable#close()}, cases where the close may
* fail require careful attention. It is strongly advised to relinquish the
* underlying resources and to internally <em>mark</em> the {@code Closeable}
* as closed, prior to throwing the {@code IOException}.
*
* @throws IOException if an I/O error occurs
*/
@Override
public void close() throws IOException {
executorService.shutdown();
try {
if (!executorService.awaitTermination(5, TimeUnit.SECONDS)) {
executorService.shutdownNow();
}
if (!executorService.awaitTermination(5, TimeUnit.SECONDS)) {
LOG.error("Unable to shutdown statemachine properly.");
}
} catch (InterruptedException e) {
LOG.error("Error attempting to shutdown.", e);
executorService.shutdownNow();
Thread.currentThread().interrupt();
}
for (EndpointStateMachine endPoint : connectionManager.getValues()) {
endPoint.close();
}
}
/**
* States that a datanode can be in. GetNextState will move this enum from
* getInitState to getLastState.
*/
public enum DatanodeStates {
INIT(1),
RUNNING(2),
SHUTDOWN(3);
private final int value;
/**
* Constructs ContainerStates.
*
* @param value
*/
DatanodeStates(int value) {
this.value = value;
}
/**
* Returns the first State.
*
* @return First State.
*/
public static DatanodeStates getInitState() {
return INIT;
}
/**
* The last state of endpoint states.
*
* @return last state.
*/
public static DatanodeStates getLastState() {
return SHUTDOWN;
}
/**
* returns the numeric value associated with the endPoint.
*
* @return int.
*/
public int getValue() {
return value;
}
/**
* Returns the next logical state that endPoint should move to. This
* function assumes the States are sequentially numbered.
*
* @return NextState.
*/
public DatanodeStates getNextState() {
if (this.value < getLastState().getValue()) {
int stateValue = this.getValue() + 1;
for (DatanodeStates iter : values()) {
if (stateValue == iter.getValue()) {
return iter;
}
}
}
return getLastState();
}
}
}

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@ -0,0 +1,265 @@
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.container.common.statemachine;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.ozone.OzoneClientUtils;
import org.apache.hadoop.ozone.protocol.VersionResponse;
import org.apache.hadoop.ozone.protocolPB
.StorageContainerDatanodeProtocolClientSideTranslatorPB;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.Closeable;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
/**
* Endpoint is used as holder class that keeps state around the RPC endpoint.
*/
public class EndpointStateMachine implements Closeable {
static final Logger
LOG = LoggerFactory.getLogger(EndpointStateMachine.class);
private final StorageContainerDatanodeProtocolClientSideTranslatorPB endPoint;
private final AtomicLong missedCount;
private final InetSocketAddress address;
private final Lock lock;
private final Configuration conf;
private EndPointStates state;
private VersionResponse version;
/**
* Constructs RPC Endpoints.
*
* @param endPoint - RPC endPoint.
*/
public EndpointStateMachine(InetSocketAddress address,
StorageContainerDatanodeProtocolClientSideTranslatorPB endPoint,
Configuration conf) {
this.endPoint = endPoint;
this.missedCount = new AtomicLong(0);
this.address = address;
state = EndPointStates.getInitState();
lock = new ReentrantLock();
this.conf = conf;
}
/**
* Takes a lock on this EndPoint so that other threads don't use this while we
* are trying to communicate via this endpoint.
*/
public void lock() {
lock.lock();
}
/**
* Unlocks this endpoint.
*/
public void unlock() {
lock.unlock();
}
/**
* Returns the version that we read from the server if anyone asks .
*
* @return - Version Response.
*/
public VersionResponse getVersion() {
return version;
}
/**
* Sets the Version reponse we recieved from the SCM.
*
* @param version VersionResponse
*/
public void setVersion(VersionResponse version) {
this.version = version;
}
/**
* Returns the current State this end point is in.
*
* @return - getState.
*/
public EndPointStates getState() {
return state;
}
/**
* Sets the endpoint state.
*
* @param state - state.
*/
public EndPointStates setState(EndPointStates state) {
this.state = state;
return this.state;
}
/**
* Closes the connection.
*
* @throws IOException
*/
@Override
public void close() throws IOException {
if (endPoint != null) {
endPoint.close();
}
}
/**
* We maintain a count of how many times we missed communicating with a
* specific SCM. This is not made atomic since the access to this is always
* guarded by the read or write lock. That is, it is serialized.
*/
public void incMissed() {
this.missedCount.incrementAndGet();
}
/**
* Returns the value of the missed count.
*
* @return int
*/
public long getMissedCount() {
return this.missedCount.get();
}
public void zeroMissedCount() {
this.missedCount.set(0);
}
/**
* Returns the InetAddress of the endPoint.
*
* @return - EndPoint.
*/
public InetSocketAddress getAddress() {
return this.address;
}
/**
* Returns real RPC endPoint.
*
* @return rpc client.
*/
public StorageContainerDatanodeProtocolClientSideTranslatorPB
getEndPoint() {
return endPoint;
}
/**
* Returns the string that represents this endpoint.
*
* @return - String
*/
public String toString() {
return address.toString();
}
/**
* Logs exception if needed.
* @param ex - Exception
*/
public void logIfNeeded(Exception ex) {
LOG.trace("Incrementing the Missed count. Ex : {}", ex);
this.incMissed();
if (this.getMissedCount() % OzoneClientUtils.getLogWarnInterval(conf) ==
0) {
LOG.warn("Unable to communicate to SCM server at {}. We have not been " +
"able to communicate to this SCM server for past {} seconds.",
this.getAddress().getHostString() + ":" + this.getAddress().getPort(),
this.getMissedCount() * OzoneClientUtils.getScmHeartbeatInterval(
this.conf));
}
}
/**
* States that an Endpoint can be in.
* <p>
* This is a sorted list of states that EndPoint will traverse.
* <p>
* GetNextState will move this enum from getInitState to getLastState.
*/
public enum EndPointStates {
GETVERSION(1),
REGISTER(2),
HEARTBEAT(3),
SHUTDOWN(4); // if you add value after this please edit getLastState too.
private final int value;
/**
* Constructs endPointStates.
*
* @param value state.
*/
EndPointStates(int value) {
this.value = value;
}
/**
* Returns the first State.
*
* @return First State.
*/
public static EndPointStates getInitState() {
return GETVERSION;
}
/**
* The last state of endpoint states.
*
* @return last state.
*/
public static EndPointStates getLastState() {
return SHUTDOWN;
}
/**
* returns the numeric value associated with the endPoint.
*
* @return int.
*/
public int getValue() {
return value;
}
/**
* Returns the next logical state that endPoint should move to.
* The next state is computed by adding 1 to the current state.
*
* @return NextState.
*/
public EndPointStates getNextState() {
if (this.getValue() < getLastState().getValue()) {
int stateValue = this.getValue() + 1;
for (EndPointStates iter : values()) {
if (stateValue == iter.getValue()) {
return iter;
}
}
}
return getLastState();
}
}
}

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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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.container.common.statemachine;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.ipc.ProtobufRpcEngine;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.ozone.OzoneClientUtils;
import org.apache.hadoop.ozone.protocolPB
.StorageContainerDatanodeProtocolClientSideTranslatorPB;
import org.apache.hadoop.ozone.protocolPB.StorageContainerDatanodeProtocolPB;
import org.apache.hadoop.security.UserGroupInformation;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
/**
* SCMConnectionManager - Acts as a class that manages the membership
* information of the SCMs that we are working with.
*/
public class SCMConnectionManager {
private static final Logger LOG =
LoggerFactory.getLogger(SCMConnectionManager.class);
private final ReadWriteLock mapLock;
private final Map<InetSocketAddress, EndpointStateMachine> scmMachines;
private final int rpcTimeout;
private final Configuration conf;
public SCMConnectionManager(Configuration conf) {
this.mapLock = new ReentrantReadWriteLock();
Long timeOut = OzoneClientUtils.getScmRpcTimeOutInMilliseconds(conf);
this.rpcTimeout = timeOut.intValue();
this.scmMachines = new HashMap<>();
this.conf = conf;
}
/**
* Returns Config.
*
* @return ozoneConfig.
*/
public Configuration getConf() {
return conf;
}
/**
* Get RpcTimeout.
*
* @return - Return RPC timeout.
*/
public long getRpcTimeout() {
return rpcTimeout;
}
/**
* Takes a read lock.
*/
public void readLock() {
this.mapLock.readLock().lock();
}
/**
* Releases the read lock.
*/
public void readUnlock() {
this.mapLock.readLock().unlock();
}
/**
* Takes the write lock.
*/
public void writeLock() {
this.mapLock.writeLock().lock();
}
/**
* Releases the write lock.
*/
public void writeUnlock() {
this.mapLock.writeLock().unlock();
}
/**
* adds a new SCM machine to the target set.
*
* @param address - Address of the SCM machine to send heatbeat to.
* @throws IOException
*/
public void addSCMServer(InetSocketAddress address) throws IOException {
writeLock();
try {
if (scmMachines.containsKey(address)) {
LOG.warn("Trying to add an existing SCM Machine to Machines group. " +
"Ignoring the request.");
return;
}
RPC.setProtocolEngine(conf, StorageContainerDatanodeProtocolPB.class,
ProtobufRpcEngine.class);
long version =
RPC.getProtocolVersion(StorageContainerDatanodeProtocolPB.class);
StorageContainerDatanodeProtocolPB rpcProxy = RPC.getProxy(
StorageContainerDatanodeProtocolPB.class, version,
address, UserGroupInformation.getCurrentUser(), conf,
NetUtils.getDefaultSocketFactory(conf), rpcTimeout);
StorageContainerDatanodeProtocolClientSideTranslatorPB rpcClient =
new StorageContainerDatanodeProtocolClientSideTranslatorPB(rpcProxy);
EndpointStateMachine endPoint =
new EndpointStateMachine(address, rpcClient, conf);
scmMachines.put(address, endPoint);
} finally {
writeUnlock();
}
}
/**
* Removes a SCM machine for the target set.
*
* @param address - Address of the SCM machine to send heatbeat to.
* @throws IOException
*/
public void removeSCMServer(InetSocketAddress address) throws IOException {
writeLock();
try {
if (!scmMachines.containsKey(address)) {
LOG.warn("Trying to remove a non-existent SCM machine. " +
"Ignoring the request.");
return;
}
EndpointStateMachine endPoint = scmMachines.get(address);
endPoint.close();
scmMachines.remove(address);
} finally {
writeUnlock();
}
}
/**
* Returns all known RPCEndpoints.
*
* @return - List of RPC Endpoints.
*/
public Collection<EndpointStateMachine> getValues() {
return scmMachines.values();
}
}

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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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.container.common.statemachine;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.ozone.container.common.states.datanode.InitDatanodeState;
import org.apache.hadoop.ozone.container.common.states.DatanodeState;
import org.apache.hadoop.ozone.container.common.states.datanode
.RunningDatanodeState;
import org.apache.hadoop.ozone.protocol.commands.SCMCommand;
import java.util.LinkedList;
import java.util.Queue;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
/**
* Current Context of State Machine.
*/
public class StateContext {
private final Queue<SCMCommand> commandQueue;
private final Lock lock;
private final DatanodeStateMachine parent;
private final AtomicLong stateExecutionCount;
private final Configuration conf;
private DatanodeStateMachine.DatanodeStates state;
/**
* Constructs a StateContext.
*
* @param conf - Configration
* @param state - State
* @param parent Parent State Machine
*/
public StateContext(Configuration conf, DatanodeStateMachine.DatanodeStates
state, DatanodeStateMachine parent) {
this.conf = conf;
this.state = state;
this.parent = parent;
commandQueue = new LinkedList<>();
lock = new ReentrantLock();
stateExecutionCount = new AtomicLong(0);
}
/**
* Returns the ContainerStateMachine class that holds this state.
*
* @return ContainerStateMachine.
*/
public DatanodeStateMachine getParent() {
return parent;
}
/**
* Returns true if we are entering a new state.
*
* @return boolean
*/
boolean isEntering() {
return stateExecutionCount.get() == 0;
}
/**
* Returns true if we are exiting from the current state.
*
* @param newState - newState.
* @return boolean
*/
boolean isExiting(DatanodeStateMachine.DatanodeStates newState) {
boolean isExiting = state != newState && stateExecutionCount.get() > 0;
if(isExiting) {
stateExecutionCount.set(0);
}
return isExiting;
}
/**
* Returns the current state the machine is in.
*
* @return state.
*/
public DatanodeStateMachine.DatanodeStates getState() {
return state;
}
/**
* Sets the current state of the machine.
*
* @param state state.
*/
public void setState(DatanodeStateMachine.DatanodeStates state) {
this.state = state;
}
/**
* Returns the next task to get executed by the datanode state machine.
* @return A callable that will be executed by the
* {@link DatanodeStateMachine}
*/
@SuppressWarnings("unchecked")
public DatanodeState<DatanodeStateMachine.DatanodeStates> getTask() {
switch (this.state) {
case INIT:
return new InitDatanodeState(this.conf, parent.getConnectionManager(),
this);
case RUNNING:
return new RunningDatanodeState(this.conf, parent.getConnectionManager(),
this);
case SHUTDOWN:
return null;
default:
throw new IllegalArgumentException("Not Implemented yet.");
}
}
/**
* Executes the required state function.
*
* @param service - Executor Service
* @param time - seconds to wait
* @param unit - Seconds.
* @throws InterruptedException
* @throws ExecutionException
* @throws TimeoutException
*/
public void execute(ExecutorService service, long time, TimeUnit unit)
throws InterruptedException, ExecutionException, TimeoutException {
stateExecutionCount.incrementAndGet();
DatanodeState<DatanodeStateMachine.DatanodeStates> task = getTask();
if (this.isEntering()) {
task.onEnter();
}
task.execute(service);
DatanodeStateMachine.DatanodeStates newState = task.await(time, unit);
if (this.state != newState) {
if (isExiting(newState)) {
task.onExit();
}
this.setState(newState);
}
}
/**
* Returns the next command or null if it is empty.
*
* @return SCMCommand or Null.
*/
public SCMCommand getNextCommand() {
lock.lock();
try {
return commandQueue.poll();
} finally {
lock.unlock();
}
}
/**
* Adds a command to the State Machine queue.
*
* @param command - SCMCommand.
*/
public void addCommand(SCMCommand command) {
lock.lock();
try {
commandQueue.add(command);
} finally {
lock.unlock();
}
}
}

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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.hadoop.ozone.container.common.statemachine;
/**
State machine class is used by the container to denote various states a
container can be in and also is used for command processing.
Container has the following states.
Start - > getVersion -> Register -> Running -> Shutdown
*/

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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.hadoop.ozone.container.common.states;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
/**
* State Interface that allows tasks to maintain states.
*/
public interface DatanodeState<T> {
/**
* Called before entering this state.
*/
void onEnter();
/**
* Called After exiting this state.
*/
void onExit();
/**
* Executes one or more tasks that is needed by this state.
*
* @param executor - ExecutorService
*/
void execute(ExecutorService executor);
/**
* Wait for execute to finish.
*
* @param time - Time
* @param timeUnit - Unit of time.
*/
T await(long time, TimeUnit timeUnit)
throws InterruptedException, ExecutionException, TimeoutException;
}

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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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.container.common.states.datanode;
import com.google.common.base.Optional;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.ozone.OzoneClientUtils;
import org.apache.hadoop.ozone.OzoneConfigKeys;
import org.apache.hadoop.ozone.container.common.statemachine.DatanodeStateMachine;
import org.apache.hadoop.ozone.container.common.statemachine.SCMConnectionManager;
import org.apache.hadoop.ozone.container.common.statemachine.StateContext;
import org.apache.hadoop.ozone.container.common.states.DatanodeState;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.net.InetSocketAddress;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
/**
* Init Datanode State is the task that gets run when we are in Init State.
*/
public class InitDatanodeState implements DatanodeState,
Callable<DatanodeStateMachine.DatanodeStates> {
static final Logger LOG = LoggerFactory.getLogger(InitDatanodeState.class);
private final SCMConnectionManager connectionManager;
private final Configuration conf;
private final StateContext context;
private Future<DatanodeStateMachine.DatanodeStates> result;
/**
* Create InitDatanodeState Task.
*
* @param conf - Conf
* @param connectionManager - Connection Manager
* @param context - Current Context
*/
public InitDatanodeState(Configuration conf,
SCMConnectionManager connectionManager,
StateContext context) {
this.conf = conf;
this.connectionManager = connectionManager;
this.context = context;
}
/**
* Computes a result, or throws an exception if unable to do so.
*
* @return computed result
* @throws Exception if unable to compute a result
*/
@Override
public DatanodeStateMachine.DatanodeStates call() throws Exception {
String[] addresses = conf.getStrings(OzoneConfigKeys.OZONE_SCM_NAMES);
final Optional<Integer> defaultPort = Optional.of(OzoneConfigKeys
.OZONE_SCM_DEFAULT_PORT);
if (addresses == null || addresses.length <= 0) {
LOG.error("SCM addresses need to be a set of valid DNS names " +
"or IP addresses. Null or empty address list found. Aborting " +
"containers.");
return DatanodeStateMachine.DatanodeStates.SHUTDOWN;
}
for (String address : addresses) {
Optional<String> hostname = OzoneClientUtils.getHostName(address);
if (!hostname.isPresent()) {
LOG.error("Invalid hostname for SCM.");
return DatanodeStateMachine.DatanodeStates.SHUTDOWN;
}
Optional<Integer> port = OzoneClientUtils.getHostPort(address);
InetSocketAddress addr = NetUtils.createSocketAddr(hostname.get(),
port.or(defaultPort.get()));
connectionManager.addSCMServer(addr);
}
return this.context.getState().getNextState();
}
/**
* Called before entering this state.
*/
@Override
public void onEnter() {
LOG.trace("Entering init container state");
}
/**
* Called After exiting this state.
*/
@Override
public void onExit() {
LOG.trace("Exiting init container state");
}
/**
* Executes one or more tasks that is needed by this state.
*
* @param executor - ExecutorService
*/
@Override
public void execute(ExecutorService executor) {
result = executor.submit(this);
}
/**
* Wait for execute to finish.
*
* @param time - Time
* @param timeUnit - Unit of time.
*/
@Override
public DatanodeStateMachine.DatanodeStates await(long time,
TimeUnit timeUnit) throws InterruptedException,
ExecutionException, TimeoutException {
return result.get(time, timeUnit);
}
}

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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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.container.common.states.datanode;
import com.google.common.base.Preconditions;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.ozone.OzoneClientUtils;
import org.apache.hadoop.ozone.OzoneConfigKeys;
import org.apache.hadoop.ozone.container.common.statemachine
.DatanodeStateMachine;
import org.apache.hadoop.ozone.container.common.statemachine
.EndpointStateMachine;
import org.apache.hadoop.ozone.container.common.statemachine
.SCMConnectionManager;
import org.apache.hadoop.ozone.container.common.statemachine.StateContext;
import org.apache.hadoop.ozone.container.common.states.DatanodeState;
import org.apache.hadoop.ozone.container.common.states.endpoint
.HeartbeatEndpointTask;
import org.apache.hadoop.ozone.container.common.states.endpoint
.RegisterEndpointTask;
import org.apache.hadoop.ozone.container.common.states.endpoint
.VersionEndpointTask;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos;
import org.apache.hadoop.util.Time;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.LinkedList;
import java.util.List;
import java.util.UUID;
import java.util.concurrent.Callable;
import java.util.concurrent.CompletionService;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorCompletionService;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
/**
* Class that implements handshake with SCM.
*/
public class RunningDatanodeState implements DatanodeState {
static final Logger
LOG = LoggerFactory.getLogger(RunningDatanodeState.class);
private final SCMConnectionManager connectionManager;
private final Configuration conf;
private final StateContext context;
private CompletionService<EndpointStateMachine.EndPointStates> ecs;
public RunningDatanodeState(Configuration conf,
SCMConnectionManager connectionManager,
StateContext context) {
this.connectionManager = connectionManager;
this.conf = conf;
this.context = context;
}
/**
* Reads a datanode ID from the persisted information.
*
* @param idPath - Path to the ID File.
* @return DatanodeID
* @throws IOException
*/
private StorageContainerDatanodeProtocolProtos.ContainerNodeIDProto
readPersistedDatanodeID(Path idPath) throws IOException {
Preconditions.checkNotNull(idPath);
StorageContainerDatanodeProtocolProtos.ContainerNodeIDProto
containerIDProto;
try (FileInputStream stream = new FileInputStream(idPath.toFile())) {
containerIDProto = StorageContainerDatanodeProtocolProtos
.ContainerNodeIDProto.parseFrom(stream);
return containerIDProto;
}
}
/**
* Create a DatanodeID from the datanode information.
*
* @return DatanodeID
* @throws UnknownHostException
*/
private DatanodeID createDatanodeID() throws UnknownHostException {
DatanodeID temp = new DatanodeID(
//TODO : Replace this with proper network and kerberos
// support code.
InetAddress.getLocalHost().getHostAddress().toString(),
DataNode.getHostName(conf),
UUID.randomUUID().toString(),
0, /** XferPort - SCM does not use this port */
0, /** Info port - SCM does not use this port */
0, /** Info Secure Port - SCM does not use this port */
0); /** IPC port - SCM does not use this port */
// TODO: make this dynamically discoverable. SCM can hand out this
// port number to calling applications. This makes it easy to run multiple
// container endpoints on the same machine.
temp.setContainerPort(OzoneClientUtils.getContainerPort(conf));
return temp;
}
/**
* Creates a new ContainerID that persists both DatanodeID and ClusterID.
*
* @param idPath Path to the id file.
* @return ContainerNodeIDProto
* @throws UnknownHostException
*/
private StorageContainerDatanodeProtocolProtos.ContainerNodeIDProto
createNewContainerID(Path idPath)
throws IOException {
StorageContainerDatanodeProtocolProtos.ContainerNodeIDProto
containerIDProto = StorageContainerDatanodeProtocolProtos
.ContainerNodeIDProto.newBuilder()
.setDatanodeID(createDatanodeID().getProtoBufMessage()).build();
try (FileOutputStream stream = new FileOutputStream(idPath.toFile())) {
stream.write(containerIDProto.toByteArray());
return containerIDProto;
}
}
/**
* Returns ContainerNodeIDProto or null in case of Error.
*
* @return ContainerNodeIDProto
*/
private StorageContainerDatanodeProtocolProtos.ContainerNodeIDProto
getContainerNodeID() {
String dataNodeIDPath = conf.get(OzoneConfigKeys.OZONE_SCM_DATANODE_ID);
if (dataNodeIDPath == null || dataNodeIDPath.isEmpty()) {
LOG.error("A valid file path is needed for config setting {}",
OzoneConfigKeys.OZONE_SCM_DATANODE_ID);
// This is an unrecoverable error.
this.context.setState(DatanodeStateMachine.DatanodeStates.SHUTDOWN);
return null;
}
StorageContainerDatanodeProtocolProtos.ContainerNodeIDProto nodeID;
// try to read an existing ContainerNode ID.
try {
nodeID = readPersistedDatanodeID(Paths.get(dataNodeIDPath));
if (nodeID != null) {
LOG.trace("Read Node ID :", nodeID.getDatanodeID().getDatanodeUuid());
return nodeID;
}
} catch (IOException ex) {
LOG.trace("Not able to find container Node ID, creating it.", ex);
}
// Not found, let us create a new datanode ID, persist it and return that
// info to SCM.
try {
nodeID = createNewContainerID(Paths.get(dataNodeIDPath));
LOG.trace("Created Node ID :", nodeID.getDatanodeID().getDatanodeUuid());
return nodeID;
} catch (IOException ex) {
LOG.error("Creating new node ID failed.", ex);
}
return null;
}
/**
* Called before entering this state.
*/
@Override
public void onEnter() {
LOG.trace("Entering handshake task.");
}
/**
* Called After exiting this state.
*/
@Override
public void onExit() {
LOG.trace("Exiting handshake task.");
}
/**
* Executes one or more tasks that is needed by this state.
*
* @param executor - ExecutorService
*/
@Override
public void execute(ExecutorService executor) {
ecs = new ExecutorCompletionService<>(executor);
for (EndpointStateMachine endpoint : connectionManager.getValues()) {
Callable<EndpointStateMachine.EndPointStates> endpointTask
= getEndPointTask(endpoint);
ecs.submit(endpointTask);
}
}
private Callable<EndpointStateMachine.EndPointStates>
getEndPointTask(EndpointStateMachine endpoint) {
switch (endpoint.getState()) {
case GETVERSION:
return new VersionEndpointTask(endpoint, conf);
case REGISTER:
return RegisterEndpointTask.newBuilder()
.setConfig(conf)
.setEndpointStateMachine(endpoint)
.setNodeID(getContainerNodeID())
.build();
case HEARTBEAT:
return HeartbeatEndpointTask.newBuilder()
.setConfig(conf)
.setEndpointStateMachine(endpoint)
.setNodeID(getContainerNodeID())
.build();
case SHUTDOWN:
break;
default:
throw new IllegalArgumentException("Illegal Argument.");
}
return null;
}
/**
* Computes the next state the container state machine must move to by looking
* at all the state of endpoints.
* <p>
* if any endpoint state has moved to Shutdown, either we have an
* unrecoverable error or we have been told to shutdown. Either case the
* datanode state machine should move to Shutdown state, otherwise we
* remain in the Running state.
*
* @return next container state.
*/
private DatanodeStateMachine.DatanodeStates
computeNextContainerState(
List<Future<EndpointStateMachine.EndPointStates>> results) {
for (Future<EndpointStateMachine.EndPointStates> state : results) {
try {
if (state.get() == EndpointStateMachine.EndPointStates.SHUTDOWN) {
// if any endpoint tells us to shutdown we move to shutdown state.
return DatanodeStateMachine.DatanodeStates.SHUTDOWN;
}
} catch (InterruptedException | ExecutionException e) {
LOG.error("Error in executing end point task.", e);
}
}
return DatanodeStateMachine.DatanodeStates.RUNNING;
}
/**
* Wait for execute to finish.
*
* @param duration - Time
* @param timeUnit - Unit of duration.
*/
@Override
public DatanodeStateMachine.DatanodeStates
await(long duration, TimeUnit timeUnit)
throws InterruptedException, ExecutionException, TimeoutException {
int count = connectionManager.getValues().size();
int returned = 0;
long timeLeft = timeUnit.toMillis(duration);
long startTime = Time.monotonicNow();
List<Future<EndpointStateMachine.EndPointStates>> results = new
LinkedList<>();
while (returned < count && timeLeft > 0) {
Future<EndpointStateMachine.EndPointStates> result =
ecs.poll(timeLeft, TimeUnit.MILLISECONDS);
if (result != null) {
results.add(result);
returned++;
}
timeLeft = timeLeft - (Time.monotonicNow() - startTime);
}
return computeNextContainerState(results);
}
}

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@ -0,0 +1,21 @@
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.container.common.states.datanode;
/**
This package contians files that guide the state transitions from
Init->Running->Shutdown for the datanode.
*/

View File

@ -0,0 +1,181 @@
/*
* 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.hadoop.ozone.container.common.states.endpoint;
import com.google.common.base.Preconditions;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.ozone.container.common.statemachine
.EndpointStateMachine;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.ContainerNodeIDProto;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.util.concurrent.Callable;
/**
* Heartbeat class for SCMs.
*/
public class HeartbeatEndpointTask
implements Callable<EndpointStateMachine.EndPointStates> {
static final Logger LOG =
LoggerFactory.getLogger(HeartbeatEndpointTask.class);
private final EndpointStateMachine rpcEndpoint;
private final Configuration conf;
private ContainerNodeIDProto containerNodeIDProto;
/**
* Constructs a SCM heart beat.
*
* @param conf Config.
*/
public HeartbeatEndpointTask(EndpointStateMachine rpcEndpoint,
Configuration conf) {
this.rpcEndpoint = rpcEndpoint;
this.conf = conf;
}
/**
* Get the container Node ID proto.
*
* @return ContainerNodeIDProto
*/
public ContainerNodeIDProto getContainerNodeIDProto() {
return containerNodeIDProto;
}
/**
* Set container node ID proto.
*
* @param containerNodeIDProto - the node id.
*/
public void setContainerNodeIDProto(ContainerNodeIDProto
containerNodeIDProto) {
this.containerNodeIDProto = containerNodeIDProto;
}
/**
* Computes a result, or throws an exception if unable to do so.
*
* @return computed result
* @throws Exception if unable to compute a result
*/
@Override
public EndpointStateMachine.EndPointStates call() throws Exception {
rpcEndpoint.lock();
try {
Preconditions.checkState(this.containerNodeIDProto != null);
DatanodeID datanodeID = DatanodeID.getFromProtoBuf(this
.containerNodeIDProto.getDatanodeID());
// TODO : Add the command to command processor queue.
rpcEndpoint.getEndPoint().sendHeartbeat(datanodeID);
rpcEndpoint.zeroMissedCount();
} catch (IOException ex) {
rpcEndpoint.logIfNeeded(ex
);
} finally {
rpcEndpoint.unlock();
}
return rpcEndpoint.getState();
}
/**
* Returns a builder class for HeartbeatEndpointTask task.
* @return Builder.
*/
public static Builder newBuilder() {
return new Builder();
}
/**
* Builder class for HeartbeatEndpointTask.
*/
public static class Builder {
private EndpointStateMachine endPointStateMachine;
private Configuration conf;
private ContainerNodeIDProto containerNodeIDProto;
/**
* Constructs the builder class.
*/
public Builder() {
}
/**
* Sets the endpoint state machine.
*
* @param rpcEndPoint - Endpoint state machine.
* @return Builder
*/
public Builder setEndpointStateMachine(EndpointStateMachine rpcEndPoint) {
this.endPointStateMachine = rpcEndPoint;
return this;
}
/**
* Sets the Config.
*
* @param config - config
* @return Builder
*/
public Builder setConfig(Configuration config) {
this.conf = config;
return this;
}
/**
* Sets the NodeID.
*
* @param nodeID - NodeID proto
* @return Builder
*/
public Builder setNodeID(ContainerNodeIDProto nodeID) {
this.containerNodeIDProto = nodeID;
return this;
}
public HeartbeatEndpointTask build() {
if (endPointStateMachine == null) {
LOG.error("No endpoint specified.");
throw new IllegalArgumentException("A valid endpoint state machine is" +
" needed to construct HeartbeatEndpointTask task");
}
if (conf == null) {
LOG.error("No config specified.");
throw new IllegalArgumentException("A valid configration is needed to" +
" construct HeartbeatEndpointTask task");
}
if (containerNodeIDProto == null) {
LOG.error("No nodeID specified.");
throw new IllegalArgumentException("A vaild Node ID is needed to " +
"construct HeartbeatEndpointTask task");
}
HeartbeatEndpointTask task = new HeartbeatEndpointTask(this
.endPointStateMachine, this.conf);
task.setContainerNodeIDProto(containerNodeIDProto);
return task;
}
}
}

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@ -0,0 +1,198 @@
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.container.common.states.endpoint;
import com.google.common.annotations.VisibleForTesting;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.ozone.OzoneConfigKeys;
import org.apache.hadoop.ozone.container.common.statemachine
.EndpointStateMachine;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.ContainerNodeIDProto;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.util.concurrent.Callable;
import java.util.concurrent.Future;
/**
* Register a container with SCM.
*/
public final class RegisterEndpointTask implements
Callable<EndpointStateMachine.EndPointStates> {
static final Logger LOG = LoggerFactory.getLogger(RegisterEndpointTask.class);
private final EndpointStateMachine rpcEndPoint;
private final Configuration conf;
private Future<EndpointStateMachine.EndPointStates> result;
private ContainerNodeIDProto containerNodeIDProto;
/**
* Creates a register endpoint task.
*
* @param rpcEndPoint - endpoint
* @param conf - conf
*/
@VisibleForTesting
public RegisterEndpointTask(EndpointStateMachine rpcEndPoint,
Configuration conf) {
this.rpcEndPoint = rpcEndPoint;
this.conf = conf;
}
/**
* Get the ContainerNodeID Proto.
*
* @return ContainerNodeIDProto
*/
public ContainerNodeIDProto getContainerNodeIDProto() {
return containerNodeIDProto;
}
/**
* Set the contiainerNodeID Proto.
*
* @param containerNodeIDProto - Container Node ID.
*/
public void setContainerNodeIDProto(ContainerNodeIDProto
containerNodeIDProto) {
this.containerNodeIDProto = containerNodeIDProto;
}
/**
* Computes a result, or throws an exception if unable to do so.
*
* @return computed result
* @throws Exception if unable to compute a result
*/
@Override
public EndpointStateMachine.EndPointStates call() throws Exception {
if (getContainerNodeIDProto() == null) {
LOG.error("Container ID proto cannot be null in RegisterEndpoint task, " +
"shutting down the endpoint.");
return rpcEndPoint.setState(EndpointStateMachine.EndPointStates.SHUTDOWN);
}
rpcEndPoint.lock();
try {
DatanodeID dnNodeID = DatanodeID.getFromProtoBuf(
getContainerNodeIDProto().getDatanodeID());
// TODO : Add responses to the command Queue.
rpcEndPoint.getEndPoint().register(dnNodeID,
conf.getStrings(OzoneConfigKeys.OZONE_SCM_NAMES));
EndpointStateMachine.EndPointStates nextState =
rpcEndPoint.getState().getNextState();
rpcEndPoint.setState(nextState);
rpcEndPoint.zeroMissedCount();
} catch (IOException ex) {
rpcEndPoint.logIfNeeded(ex
);
} finally {
rpcEndPoint.unlock();
}
return rpcEndPoint.getState();
}
/**
* Returns a builder class for RegisterEndPoint task.
*
* @return Builder.
*/
public static Builder newBuilder() {
return new Builder();
}
/**
* Builder class for RegisterEndPoint task.
*/
public static class Builder {
private EndpointStateMachine endPointStateMachine;
private Configuration conf;
private ContainerNodeIDProto containerNodeIDProto;
/**
* Constructs the builder class.
*/
public Builder() {
}
/**
* Sets the endpoint state machine.
*
* @param rpcEndPoint - Endpoint state machine.
* @return Builder
*/
public Builder setEndpointStateMachine(EndpointStateMachine rpcEndPoint) {
this.endPointStateMachine = rpcEndPoint;
return this;
}
/**
* Sets the Config.
*
* @param config - config
* @return Builder.
*/
public Builder setConfig(Configuration config) {
this.conf = config;
return this;
}
/**
* Sets the NodeID.
*
* @param nodeID - NodeID proto
* @return Builder
*/
public Builder setNodeID(ContainerNodeIDProto nodeID) {
this.containerNodeIDProto = nodeID;
return this;
}
public RegisterEndpointTask build() {
if (endPointStateMachine == null) {
LOG.error("No endpoint specified.");
throw new IllegalArgumentException("A valid endpoint state machine is" +
" needed to construct RegisterEndPoint task");
}
if (conf == null) {
LOG.error("No config specified.");
throw new IllegalArgumentException("A valid configration is needed to" +
" construct RegisterEndpoint task");
}
if (containerNodeIDProto == null) {
LOG.error("No nodeID specified.");
throw new IllegalArgumentException("A vaild Node ID is needed to " +
"construct RegisterEndpoint task");
}
RegisterEndpointTask task = new RegisterEndpointTask(this
.endPointStateMachine, this.conf);
task.setContainerNodeIDProto(containerNodeIDProto);
return task;
}
}
}

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@ -0,0 +1,66 @@
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.container.common.states.endpoint;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.ozone.container.common.statemachine.EndpointStateMachine;
import org.apache.hadoop.ozone.protocol.VersionResponse;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.SCMVersionResponseProto;
import java.io.IOException;
import java.util.concurrent.Callable;
/**
* Task that returns version.
*/
public class VersionEndpointTask implements
Callable<EndpointStateMachine.EndPointStates> {
private final EndpointStateMachine rpcEndPoint;
private final Configuration configuration;
public VersionEndpointTask(EndpointStateMachine rpcEndPoint,
Configuration conf) {
this.rpcEndPoint = rpcEndPoint;
this.configuration = conf;
}
/**
* Computes a result, or throws an exception if unable to do so.
*
* @return computed result
* @throws Exception if unable to compute a result
*/
@Override
public EndpointStateMachine.EndPointStates call() throws Exception {
rpcEndPoint.lock();
try{
SCMVersionResponseProto versionResponse =
rpcEndPoint.getEndPoint().getVersion();
rpcEndPoint.setVersion(VersionResponse.getFromProtobuf(versionResponse));
EndpointStateMachine.EndPointStates nextState =
rpcEndPoint.getState().getNextState();
rpcEndPoint.setState(nextState);
rpcEndPoint.zeroMissedCount();
} catch (IOException ex) {
rpcEndPoint.logIfNeeded(ex);
} finally {
rpcEndPoint.unlock();
}
return rpcEndPoint.getState();
}
}

View File

@ -0,0 +1,20 @@
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.container.common.states.endpoint;
/**
This package contains code for RPC endpoints transitions.
*/

View File

@ -0,0 +1,18 @@
/**
* 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.hadoop.ozone.container.common.states;

View File

@ -64,8 +64,8 @@ public class OzoneContainer {
Configuration ozoneConfig,
FsDatasetSpi<? extends FsVolumeSpi> dataSet) throws Exception {
List<StorageLocation> locations = new LinkedList<>();
String[] paths = ozoneConfig.getStrings(OzoneConfigKeys
.OZONE_METADATA_DIRS);
String[] paths = ozoneConfig.getStrings(
OzoneConfigKeys.OZONE_CONTAINER_METADATA_DIRS);
if (paths != null && paths.length > 0) {
for (String p : paths) {
locations.add(StorageLocation.parse(p));

View File

@ -0,0 +1,58 @@
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.protocol;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.SCMHeartbeatResponseProto;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.SCMVersionResponseProto;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.SCMRegisteredCmdResponseProto;
import java.io.IOException;
/**
* The protocol spoken between datanodes and SCM. For specifics please the
* Protoc file that defines this protocol.
*/
@InterfaceAudience.Private
public interface StorageContainerDatanodeProtocol {
/**
* Returns SCM version.
* @return Version info.
*/
SCMVersionResponseProto getVersion() throws IOException;
/**
* Used by data node to send a Heartbeat.
* @param datanodeID - Datanode ID.
* @return - SCMHeartbeatResponseProto
* @throws IOException
*/
SCMHeartbeatResponseProto sendHeartbeat(DatanodeID datanodeID)
throws IOException;
/**
* Register Datanode.
* @param datanodeID - DatanodID.
* @param scmAddresses - List of SCMs this datanode is configured to
* communicate.
* @return SCM Command.
*/
SCMRegisteredCmdResponseProto register(DatanodeID datanodeID,
String[] scmAddresses) throws IOException;
}

View File

@ -17,7 +17,7 @@
*/
package org.apache.hadoop.ozone.protocol.commands;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.SCMCommandResponseProto.Type;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.Type;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.NullCmdResponseProto;

View File

@ -18,15 +18,19 @@
package org.apache.hadoop.ozone.protocol.commands;
import com.google.common.base.Preconditions;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.RegisteredCmdResponseProto;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.RegisteredCmdResponseProto.ErrorCode;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.SCMCommandResponseProto.Type;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.SCMRegisteredCmdResponseProto;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.SCMRegisteredCmdResponseProto
.ErrorCode;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.Type;
/**
* Response to Datanode Register call.
*/
public class RegisteredCommand extends SCMCommand<RegisteredCmdResponseProto> {
public class RegisteredCommand extends
SCMCommand<SCMRegisteredCmdResponseProto> {
private String datanodeUUID;
private String clusterID;
private ErrorCode error;
@ -38,8 +42,6 @@ public class RegisteredCommand extends SCMCommand<RegisteredCmdResponseProto> {
this.error = error;
}
/**
* Returns a new builder.
*
@ -56,11 +58,12 @@ public class RegisteredCommand extends SCMCommand<RegisteredCmdResponseProto> {
*/
@Override
Type getType() {
return Type.registeredCmd;
return Type.registeredCommand;
}
/**
* Returns datanode UUID.
*
* @return - Datanode ID.
*/
public String getDatanodeUUID() {
@ -69,6 +72,7 @@ public class RegisteredCommand extends SCMCommand<RegisteredCmdResponseProto> {
/**
* Returns cluster ID.
*
* @return -- ClusterID
*/
public String getClusterID() {
@ -77,6 +81,7 @@ public class RegisteredCommand extends SCMCommand<RegisteredCmdResponseProto> {
/**
* Returns ErrorCode.
*
* @return - ErrorCode
*/
public ErrorCode getError() {
@ -89,8 +94,8 @@ public class RegisteredCommand extends SCMCommand<RegisteredCmdResponseProto> {
* @return A protobuf message.
*/
@Override
RegisteredCmdResponseProto getProtoBufMessage() {
return RegisteredCmdResponseProto.newBuilder()
SCMRegisteredCmdResponseProto getProtoBufMessage() {
return SCMRegisteredCmdResponseProto.newBuilder()
.setClusterID(this.clusterID)
.setDatanodeUUID(this.datanodeUUID)
.setErrorCode(this.error)
@ -122,7 +127,7 @@ public class RegisteredCommand extends SCMCommand<RegisteredCmdResponseProto> {
* @param response - RegisteredCmdResponseProto
* @return RegisteredCommand
*/
public RegisteredCommand getFromProtobuf(RegisteredCmdResponseProto
public RegisteredCommand getFromProtobuf(SCMRegisteredCmdResponseProto
response) {
Preconditions.checkNotNull(response);
return new RegisteredCommand(response.getErrorCode(),

View File

@ -18,7 +18,7 @@
package org.apache.hadoop.ozone.protocol.commands;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.SCMCommandResponseProto.Type;
.StorageContainerDatanodeProtocolProtos.Type;
import com.google.protobuf.GeneratedMessage;
/**

View File

@ -0,0 +1,154 @@
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.protocolPB;
import com.google.protobuf.RpcController;
import com.google.protobuf.ServiceException;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.ipc.ProtobufHelper;
import org.apache.hadoop.ipc.ProtocolTranslator;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.ozone.protocol.StorageContainerDatanodeProtocol;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.SCMHeartbeatRequestProto;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.SCMHeartbeatResponseProto;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.SCMVersionRequestProto;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.SCMVersionResponseProto;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.SCMRegisterRequestProto;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.SCMRegisteredCmdResponseProto;
import java.io.Closeable;
import java.io.IOException;
/**
* This class is the client-side translator to translate the requests made on
* the {@link StorageContainerDatanodeProtocol} interface to the RPC server
* implementing {@link StorageContainerDatanodeProtocolPB}.
*/
public class StorageContainerDatanodeProtocolClientSideTranslatorPB
implements StorageContainerDatanodeProtocol, ProtocolTranslator, Closeable {
/**
* RpcController is not used and hence is set to null.
*/
private static final RpcController NULL_RPC_CONTROLLER = null;
private final StorageContainerDatanodeProtocolPB rpcProxy;
/**
* Constructs a Client side interface that calls into SCM datanode protocol.
*
* @param rpcProxy - Proxy for RPC.
*/
public StorageContainerDatanodeProtocolClientSideTranslatorPB(
StorageContainerDatanodeProtocolPB rpcProxy) {
this.rpcProxy = rpcProxy;
}
/**
* Closes this stream and releases any system resources associated with it. If
* the stream is already closed then invoking this method has no effect.
* <p>
* <p> As noted in {@link AutoCloseable#close()}, cases where the close may
* fail require careful attention. It is strongly advised to relinquish the
* underlying resources and to internally <em>mark</em> the {@code Closeable}
* as closed, prior to throwing the {@code IOException}.
*
* @throws IOException if an I/O error occurs
*/
@Override
public void close() throws IOException {
RPC.stopProxy(rpcProxy);
}
/**
* Return the proxy object underlying this protocol translator.
*
* @return the proxy object underlying this protocol translator.
*/
@Override
public Object getUnderlyingProxyObject() {
return rpcProxy;
}
/**
* Returns SCM version.
*
* @return Version info.
*/
@Override
public SCMVersionResponseProto getVersion() throws IOException {
SCMVersionRequestProto request =
SCMVersionRequestProto.newBuilder().build();
final SCMVersionResponseProto response;
try {
response = rpcProxy.getVersion(NULL_RPC_CONTROLLER, request);
} catch (ServiceException ex) {
throw ProtobufHelper.getRemoteException(ex);
}
return response;
}
/**
* Send by datanode to SCM.
*
* @param datanodeID - DatanodeID
* @throws IOException
*/
@Override
public SCMHeartbeatResponseProto sendHeartbeat(DatanodeID datanodeID)
throws IOException {
SCMHeartbeatRequestProto.Builder req =
SCMHeartbeatRequestProto.newBuilder();
req.setDatanodeID(datanodeID.getProtoBufMessage());
final SCMHeartbeatResponseProto resp;
try {
resp = rpcProxy.sendHeartbeat(NULL_RPC_CONTROLLER, req.build());
} catch (ServiceException e) {
throw ProtobufHelper.getRemoteException(e);
}
return resp;
}
/**
* Register Datanode.
*
* @param datanodeID - DatanodID.
* @return SCM Command.
*/
@Override
public SCMRegisteredCmdResponseProto register(DatanodeID datanodeID,
String[] scmAddresses) throws IOException {
SCMRegisterRequestProto.Builder req =
SCMRegisterRequestProto.newBuilder();
req.setDatanodeID(datanodeID.getProtoBufMessage());
final SCMRegisteredCmdResponseProto response;
try {
response = rpcProxy.register(NULL_RPC_CONTROLLER, req.build());
} catch (ServiceException e) {
throw ProtobufHelper.getRemoteException(e);
}
return response;
}
}

View File

@ -0,0 +1,32 @@
/**
* 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
* <p/>
* http://www.apache.org/licenses/LICENSE-2.0
* <p/>
* 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.hadoop.ozone.protocolPB;
import org.apache.hadoop.ipc.ProtocolInfo;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.StorageContainerDatanodeProtocolService;
/**
* Protocol used from a datanode to StorageContainerManager. This extends
* the Protocol Buffers service interface to add Hadoop-specific annotations.
*/
@ProtocolInfo(protocolName =
"org.apache.hadoop.ozone.protocol.StorageContainerDatanodeProtocol",
protocolVersion = 1)
public interface StorageContainerDatanodeProtocolPB extends
StorageContainerDatanodeProtocolService.BlockingInterface {
}

View File

@ -0,0 +1,86 @@
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.protocolPB;
import com.google.protobuf.RpcController;
import com.google.protobuf.ServiceException;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.ozone.protocol.StorageContainerDatanodeProtocol;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.SCMHeartbeatRequestProto;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.SCMHeartbeatResponseProto;
import java.io.IOException;
/**
* This class is the server-side translator that forwards requests received on
* {@link StorageContainerDatanodeProtocolPB} to the {@link
* StorageContainerDatanodeProtocol} server implementation.
*/
public class StorageContainerDatanodeProtocolServerSideTranslatorPB
implements StorageContainerDatanodeProtocolPB {
private final StorageContainerDatanodeProtocol impl;
public StorageContainerDatanodeProtocolServerSideTranslatorPB(
StorageContainerDatanodeProtocol impl) {
this.impl = impl;
}
@Override
public StorageContainerDatanodeProtocolProtos.SCMVersionResponseProto
getVersion(RpcController controller,
StorageContainerDatanodeProtocolProtos.SCMVersionRequestProto request)
throws ServiceException {
try {
return impl.getVersion();
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public StorageContainerDatanodeProtocolProtos.SCMRegisteredCmdResponseProto
register(RpcController controller, StorageContainerDatanodeProtocolProtos
.SCMRegisterRequestProto request) throws ServiceException {
String[] addressArray = null;
if (request.hasAddressList()) {
addressArray = request.getAddressList().getAddressListList()
.toArray(new String[0]);
}
try {
return impl.register(DatanodeID.getFromProtoBuf(request
.getDatanodeID()), addressArray);
} catch (IOException e) {
throw new ServiceException(e);
}
}
@Override
public SCMHeartbeatResponseProto
sendHeartbeat(RpcController controller,
SCMHeartbeatRequestProto request) throws ServiceException {
try {
return impl.sendHeartbeat(DatanodeID.getFromProtoBuf(request
.getDatanodeID()));
} catch (IOException e) {
throw new ServiceException(e);
}
}
}

View File

@ -26,6 +26,8 @@ public final class VersionInfo {
private final static VersionInfo[] VERSION_INFOS =
{new VersionInfo("First version of SCM", 1)};
public static final String DESCRIPTION_KEY = "Description";
private final String description;
private final int version;

View File

@ -29,8 +29,11 @@ import org.apache.hadoop.ozone.protocol.StorageContainerNodeProtocol;
import org.apache.hadoop.ozone.protocol.VersionResponse;
import org.apache.hadoop.ozone.protocol.commands.RegisteredCommand;
import org.apache.hadoop.ozone.protocol.commands.SCMCommand;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.RegisteredCmdResponseProto.ErrorCode;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.SCMVersionRequestProto;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.SCMRegisteredCmdResponseProto
.ErrorCode;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.SCMVersionRequestProto;
import org.apache.hadoop.ozone.scm.VersionInfo;
import org.apache.hadoop.util.concurrent.HadoopExecutors;
@ -43,7 +46,6 @@ import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Queue;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.ScheduledExecutorService;
@ -580,21 +582,20 @@ public class SCMNodeManager
@Override
public SCMCommand register(DatanodeID datanodeID) {
SCMCommand errorCode = verifyDatanodeUUID(datanodeID);
if (errorCode != null) {
return errorCode;
SCMCommand responseCommand = verifyDatanodeUUID(datanodeID);
if (responseCommand != null) {
return responseCommand;
}
DatanodeID newDatanodeID = new DatanodeID(UUID.randomUUID().toString(),
datanodeID);
nodes.put(newDatanodeID.getDatanodeUuid(), newDatanodeID);
nodes.put(datanodeID.getDatanodeUuid(), datanodeID);
totalNodes.incrementAndGet();
healthyNodes.put(newDatanodeID.getDatanodeUuid(), monotonicNow());
healthyNodes.put(datanodeID.getDatanodeUuid(), monotonicNow());
healthyNodeCount.incrementAndGet();
LOG.info("Data node with ID: {} Registered.",
newDatanodeID.getDatanodeUuid());
datanodeID.getDatanodeUuid());
return RegisteredCommand.newBuilder()
.setErrorCode(ErrorCode.success)
.setDatanodeUUID(newDatanodeID.getDatanodeUuid())
.setDatanodeUUID(datanodeID.getDatanodeUuid())
.setClusterID(this.clusterID)
.build();
}
@ -607,20 +608,12 @@ public class SCMNodeManager
*/
private SCMCommand verifyDatanodeUUID(DatanodeID datanodeID) {
// Make sure that we return the right error code, so that
// data node can log the correct error. if it is already registered then
// datanode should move to heartbeat state. It implies that somehow we
// have an error where the data node is trying to re-register.
//
// We are going to let the datanode know that there is an error but allow it
// to recover by sending it the right info that is needed for recovery.
if (datanodeID.getDatanodeUuid() != null &&
nodes.containsKey(datanodeID.getDatanodeUuid())) {
LOG.error("Datanode is already registered. Datanode: {}",
LOG.trace("Datanode is already registered. Datanode: {}",
datanodeID.toString());
return RegisteredCommand.newBuilder()
.setErrorCode(ErrorCode.errorNodeAlreadyRegistered)
.setErrorCode(ErrorCode.success)
.setClusterID(this.clusterID)
.setDatanodeUUID(datanodeID.getDatanodeUuid())
.build();

View File

@ -31,9 +31,13 @@ option java_generic_services = true;
option java_generate_equals_and_hash = true;
package hadoop.hdfs;
import "hdfs.proto";
import "HdfsServer.proto";
import "DatanodeProtocol.proto";
import "DatanodeContainerProtocol.proto";
@ -45,6 +49,10 @@ message SCMHeartbeatRequestProto {
required DatanodeIDProto datanodeID = 1;
}
message SCMRegisterRequestProto {
required DatanodeIDProto datanodeID = 1;
optional SCMNodeAddressList addressList = 2;
}
/**
* Request for version info of the software stack on the server.
@ -59,24 +67,38 @@ message SCMVersionRequestProto {
*/
message SCMVersionResponseProto {
required uint32 softwareVersion = 1;
repeated hadoop.hdfs.ozone.KeyValue keys = 2;
repeated hadoop.hdfs.ozone.KeyValue keys = 2;
}
message SCMNodeAddressList {
repeated string addressList = 1;
}
/**
* Datanode ID returned by the SCM. This is similar to name node
* registeration of a datanode.
*/
message RegisteredCmdResponseProto {
message SCMRegisteredCmdResponseProto {
enum ErrorCode {
success = 1;
errorNodeAlreadyRegistered = 2;
errorNodeNotPermitted = 3;
errorNodeNotPermitted = 2;
}
required ErrorCode errorCode = 1;
optional string datanodeUUID = 2;
optional string clusterID = 3;
required ErrorCode errorCode = 2;
optional string datanodeUUID = 3;
optional string clusterID = 4;
optional SCMNodeAddressList addressList = 5;
}
/**
* Container ID maintains the container's Identity along with cluster ID
* after the registration is done.
*/
message ContainerNodeIDProto {
required DatanodeIDProto datanodeID = 1;
optional string clusterID = 2;
}
/**
* Empty Command Response
*/
@ -84,18 +106,21 @@ message NullCmdResponseProto {
}
/**
Type of commands supported by SCM to datanode protocol.
*/
enum Type {
nullCmd = 1;
versionCommand = 2;
registeredCommand = 3;
}
/*
* These are commands returned by SCM for to the datanode to execute.
*/
message SCMCommandResponseProto {
enum Type {
nullCmd = 1;
registeredCmd = 2; // Returns the datanode ID after registeration.
}
required Type cmdType = 1; // Type of the command
optional NullCmdResponseProto nullCommand = 2;
optional RegisteredCmdResponseProto registerNode = 3;
message SCMCommandResponseProto {
required Type cmdType = 2; // Type of the command
optional NullCmdResponseProto nullCommand = 3;
}
@ -160,12 +185,11 @@ message SCMHeartbeatResponseProto {
* registered with some SCM. If this file is not found, datanode assumes that
* it needs to do a registration.
*
* If registration is need datanode moves into REGISTERING_NODE state. It will
* send a register call with datanodeID data structure, but with datanode UUID
* will be set to an empty string.
* If registration is need datanode moves into REGISTER state. It will
* send a register call with datanodeID data structure and presist that info.
*
* The response to the command contains the datanode UUID and clusterID. This
* information is persisted by the datanode and moves into heartbeat state.
* The response to the command contains clusterID. This information is
* also persisted by the datanode and moves into heartbeat state.
*
* Once in the heartbeat state, datanode sends heartbeats and container reports
* to SCM and process commands issued by SCM until it is shutdown.
@ -176,12 +200,12 @@ service StorageContainerDatanodeProtocolService {
/**
* Gets the version information from the SCM.
*/
rpc getVersion(SCMVersionRequestProto) returns (SCMVersionResponseProto);
rpc getVersion (SCMVersionRequestProto) returns (SCMVersionResponseProto);
/**
* Registers a data node with SCM.
*/
rpc register(SCMHeartbeatRequestProto) returns (SCMCommandResponseProto);
rpc register (SCMRegisterRequestProto) returns (SCMRegisteredCmdResponseProto);
/**
* Send heartbeat from datanode to SCM. HB's under SCM looks more

View File

@ -0,0 +1,188 @@
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.container.common;
import com.google.protobuf.BlockingService;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.DFSUtil;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.io.retry.RetryPolicies;
import org.apache.hadoop.ipc.ProtobufRpcEngine;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.ozone.container.common.statemachine.EndpointStateMachine;
import org.apache.hadoop.ozone.protocol.StorageContainerDatanodeProtocol;
import org.apache.hadoop.ozone.protocol.commands.RegisteredCommand;
import org.apache.hadoop.ozone.protocol.proto.StorageContainerDatanodeProtocolProtos.StorageContainerDatanodeProtocolService;
import org.apache.hadoop.ozone.protocolPB.StorageContainerDatanodeProtocolClientSideTranslatorPB;
import org.apache.hadoop.ozone.protocolPB.StorageContainerDatanodeProtocolPB;
import org.apache.hadoop.ozone.protocolPB.StorageContainerDatanodeProtocolServerSideTranslatorPB;
import org.apache.hadoop.ozone.scm.node.SCMNodeManager;
import org.apache.hadoop.security.UserGroupInformation;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.util.Random;
import java.util.UUID;
/**
* Test Endpoint class.
*/
public final class SCMTestUtils {
/**
* Never constructed.
*/
private SCMTestUtils() {
}
/**
* Starts an RPC server, if configured.
*
* @param conf configuration
* @param addr configured address of RPC server
* @param protocol RPC protocol provided by RPC server
* @param instance RPC protocol implementation instance
* @param handlerCount RPC server handler count
* @return RPC server
* @throws IOException if there is an I/O error while creating RPC server
*/
private static RPC.Server startRpcServer(Configuration conf,
InetSocketAddress addr, Class<?>
protocol, BlockingService instance, int handlerCount)
throws IOException {
RPC.Server rpcServer = new RPC.Builder(conf)
.setProtocol(protocol)
.setInstance(instance)
.setBindAddress(addr.getHostString())
.setPort(addr.getPort())
.setNumHandlers(handlerCount)
.setVerbose(false)
.setSecretManager(null)
.build();
DFSUtil.addPBProtocol(conf, protocol, instance, rpcServer);
return rpcServer;
}
/**
* Creates an Endpoint class for testing purpose.
*
* @param conf - Conf
* @param address - InetAddres
* @param rpcTimeout - rpcTimeOut
* @return EndPoint
* @throws Exception
*/
public static EndpointStateMachine createEndpoint(Configuration conf,
InetSocketAddress address, int rpcTimeout) throws Exception {
RPC.setProtocolEngine(conf, StorageContainerDatanodeProtocolPB.class,
ProtobufRpcEngine.class);
long version =
RPC.getProtocolVersion(StorageContainerDatanodeProtocolPB.class);
StorageContainerDatanodeProtocolPB rpcProxy = RPC.getProtocolProxy(
StorageContainerDatanodeProtocolPB.class, version,
address, UserGroupInformation.getCurrentUser(), conf,
NetUtils.getDefaultSocketFactory(conf), rpcTimeout,
RetryPolicies.TRY_ONCE_THEN_FAIL).getProxy();
StorageContainerDatanodeProtocolClientSideTranslatorPB rpcClient =
new StorageContainerDatanodeProtocolClientSideTranslatorPB(rpcProxy);
return new EndpointStateMachine(address, rpcClient, conf);
}
/**
* Start Datanode RPC server.
*/
public static RPC.Server startScmRpcServer(Configuration configuration,
StorageContainerDatanodeProtocol server,
InetSocketAddress rpcServerAddresss, int handlerCount) throws
IOException {
RPC.setProtocolEngine(configuration,
StorageContainerDatanodeProtocolPB.class,
ProtobufRpcEngine.class);
BlockingService scmDatanodeService =
StorageContainerDatanodeProtocolService.
newReflectiveBlockingService(
new StorageContainerDatanodeProtocolServerSideTranslatorPB(
server));
RPC.Server scmServer = startRpcServer(configuration, rpcServerAddresss,
StorageContainerDatanodeProtocolPB.class, scmDatanodeService,
handlerCount);
scmServer.start();
return scmServer;
}
public static InetSocketAddress getReuseableAddress() throws IOException {
try (ServerSocket socket = new ServerSocket(0)) {
socket.setReuseAddress(true);
int port = socket.getLocalPort();
String addr = InetAddress.getLoopbackAddress().getHostAddress()
.toString();
return new InetSocketAddress(addr, port);
}
}
public static Configuration getConf() {
return new Configuration();
}
public static DatanodeID getDatanodeID(SCMNodeManager nodeManager) {
return getDatanodeID(nodeManager, UUID.randomUUID().toString());
}
/**
* Create a new DatanodeID with NodeID set to the string.
*
* @param uuid - node ID, it is generally UUID.
* @return DatanodeID.
*/
public static DatanodeID getDatanodeID(SCMNodeManager nodeManager, String
uuid) {
DatanodeID tempDataNode = getDatanodeID(uuid);
RegisteredCommand command =
(RegisteredCommand) nodeManager.register(tempDataNode);
return new DatanodeID(command.getDatanodeUUID(), tempDataNode);
}
/**
* Get a datanode ID.
*
* @return DatanodeID
*/
public static DatanodeID getDatanodeID() {
return getDatanodeID(UUID.randomUUID().toString());
}
private static DatanodeID getDatanodeID(String uuid) {
Random random = new Random();
String ipAddress = random.nextInt(256) + "."
+ random.nextInt(256) + "."
+ random.nextInt(256) + "."
+ random.nextInt(256);
String hostName = uuid;
return new DatanodeID(ipAddress,
hostName, uuid, 0, 0, 0, 0);
}
}

View File

@ -0,0 +1,149 @@
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.container.common;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.ozone.protocol.StorageContainerDatanodeProtocol;
import org.apache.hadoop.ozone.protocol.VersionResponse;
import org.apache.hadoop.ozone.protocol.commands.NullCommand;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos;
import org.apache.hadoop.ozone.scm.VersionInfo;
import java.io.IOException;
import java.util.UUID;
import java.util.concurrent.atomic.AtomicInteger;
/**
* SCM RPC mock class.
*/
public class ScmTestMock implements StorageContainerDatanodeProtocol {
private int rpcResponseDelay;
private AtomicInteger heartbeatCount = new AtomicInteger(0);
private AtomicInteger rpcCount = new AtomicInteger(0);
/**
* Returns the number of heartbeats made to this class.
*
* @return int
*/
public int getHeartbeatCount() {
return heartbeatCount.get();
}
/**
* Returns the number of RPC calls made to this mock class instance.
*
* @return - Number of RPC calls serviced by this class.
*/
public int getRpcCount() {
return rpcCount.get();
}
/**
* Gets the RPC response delay.
*
* @return delay in milliseconds.
*/
public int getRpcResponseDelay() {
return rpcResponseDelay;
}
/**
* Sets the RPC response delay.
*
* @param rpcResponseDelay - delay in milliseconds.
*/
public void setRpcResponseDelay(int rpcResponseDelay) {
this.rpcResponseDelay = rpcResponseDelay;
}
/**
* Returns SCM version.
*
* @return Version info.
*/
@Override
public StorageContainerDatanodeProtocolProtos.SCMVersionResponseProto
getVersion() throws IOException {
rpcCount.incrementAndGet();
sleepIfNeeded();
VersionInfo versionInfo = VersionInfo.getLatestVersion();
return VersionResponse.newBuilder()
.setVersion(versionInfo.getVersion())
.addValue(VersionInfo.DESCRIPTION_KEY, versionInfo.getDescription())
.build().getProtobufMessage();
}
private void sleepIfNeeded() {
if (getRpcResponseDelay() > 0) {
try {
Thread.sleep(getRpcResponseDelay());
} catch (InterruptedException ex) {
// Just ignore this exception.
}
}
}
/**
* Used by data node to send a Heartbeat.
*
* @param datanodeID - Datanode ID.
* @return - SCMHeartbeatResponseProto
* @throws IOException
*/
@Override
public StorageContainerDatanodeProtocolProtos.SCMHeartbeatResponseProto
sendHeartbeat(DatanodeID datanodeID)
throws IOException {
rpcCount.incrementAndGet();
heartbeatCount.incrementAndGet();
sleepIfNeeded();
StorageContainerDatanodeProtocolProtos.SCMCommandResponseProto
cmdResponse = StorageContainerDatanodeProtocolProtos
.SCMCommandResponseProto
.newBuilder().setCmdType(StorageContainerDatanodeProtocolProtos
.Type.nullCmd)
.setNullCommand(
NullCommand.newBuilder().build().getProtoBufMessage()).build();
return StorageContainerDatanodeProtocolProtos.SCMHeartbeatResponseProto
.newBuilder()
.addCommands(cmdResponse).build();
}
/**
* Register Datanode.
*
* @param datanodeID - DatanodID.
* @param scmAddresses - List of SCMs this datanode is configured to
* communicate.
* @return SCM Command.
*/
@Override
public StorageContainerDatanodeProtocolProtos
.SCMRegisteredCmdResponseProto register(DatanodeID datanodeID,
String[] scmAddresses) throws IOException {
rpcCount.incrementAndGet();
sleepIfNeeded();
return StorageContainerDatanodeProtocolProtos
.SCMRegisteredCmdResponseProto
.newBuilder().setClusterID(UUID.randomUUID().toString())
.setDatanodeUUID(datanodeID.getDatanodeUuid()).setErrorCode(
StorageContainerDatanodeProtocolProtos
.SCMRegisteredCmdResponseProto.ErrorCode.success).build();
}
}

View File

@ -0,0 +1,274 @@
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.container.common;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.ozone.OzoneConfigKeys;
import org.apache.hadoop.ozone.container.common.statemachine
.DatanodeStateMachine;
import org.apache.hadoop.ozone.container.common.statemachine
.EndpointStateMachine;
import org.apache.hadoop.ozone.container.common.statemachine
.SCMConnectionManager;
import org.apache.hadoop.ozone.container.common.states.DatanodeState;
import org.apache.hadoop.ozone.container.common.states.datanode
.InitDatanodeState;
import org.apache.hadoop.ozone.container.common.states.datanode
.RunningDatanodeState;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.util.concurrent.HadoopExecutors;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.URL;
import java.nio.file.Paths;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
/**
* Tests the datanode state machine class and its states.
*/
public class TestDatanodeStateMachine {
private final int scmServerCount = 3;
private List<String> serverAddresses;
private List<RPC.Server> scmServers;
private List<ScmTestMock> mockServers;
private ExecutorService executorService;
private Configuration conf;
private static final Logger LOG =
LoggerFactory.getLogger(TestDatanodeStateMachine.class);
@Before
public void setUp() throws Exception {
conf = SCMTestUtils.getConf();
serverAddresses = new LinkedList<>();
scmServers = new LinkedList<>();
mockServers = new LinkedList<>();
for (int x = 0; x < scmServerCount; x++) {
int port = SCMTestUtils.getReuseableAddress().getPort();
String address = "127.0.0.1";
serverAddresses.add(address + ":" + port);
ScmTestMock mock = new ScmTestMock();
scmServers.add(SCMTestUtils.startScmRpcServer(conf, mock,
new InetSocketAddress(address, port), 10));
mockServers.add(mock);
}
conf.setStrings(OzoneConfigKeys.OZONE_SCM_NAMES,
serverAddresses.toArray(new String[0]));
URL p = this.getClass().getResource("");
String path = p.getPath().concat(
TestDatanodeStateMachine.class.getSimpleName());
File f = new File(path);
if(!f.mkdirs()) {
LOG.info("Required directories already exist.");
}
path = Paths.get(path.toString(),
TestDatanodeStateMachine.class.getSimpleName() + ".id").toString();
conf.set(OzoneConfigKeys.OZONE_SCM_DATANODE_ID, path);
executorService = HadoopExecutors.newScheduledThreadPool(
conf.getInt(
OzoneConfigKeys.OZONE_SCM_CONTAINER_THREADS,
OzoneConfigKeys.OZONE_SCM_CONTAINER_THREADS_DEFAULT),
new ThreadFactoryBuilder().setDaemon(true)
.setNameFormat("Test Data Node State Machine Thread - %d").build());
}
@After
public void tearDown() throws Exception {
try {
executorService.shutdownNow();
for (RPC.Server s : scmServers) {
s.stop();
}
} catch (Exception e) {
//ignore all execption from the shutdown
}
}
/**
* Assert that starting statemachine executes the Init State.
*
* @throws IOException
* @throws InterruptedException
*/
@Test
public void testDatanodeStateMachineStartThread() throws IOException,
InterruptedException, TimeoutException {
final DatanodeStateMachine stateMachine = new DatanodeStateMachine(conf);
Runnable startStateMachineTask = () -> {
try {
stateMachine.start();
} catch (IOException ex) {
}
};
Thread thread1 = new Thread(startStateMachineTask);
thread1.setDaemon(true);
thread1.start();
SCMConnectionManager connectionManager =
stateMachine.getConnectionManager();
GenericTestUtils.waitFor(() -> connectionManager.getValues().size() == 3 ,
100, 1000);
stateMachine.close();
}
/**
* This test explores the state machine by invoking each call in sequence just
* like as if the state machine would call it. Because this is a test we are
* able to verify each of the assumptions.
* <p>
* Here is what happens at High level.
* <p>
* 1. We start the datanodeStateMachine in the INIT State.
* <p>
* 2. We invoke the INIT state task.
* <p>
* 3. That creates a set of RPC endpoints that are ready to connect to SCMs.
* <p>
* 4. We assert that we have moved to the running state for the
* DatanodeStateMachine.
* <p>
* 5. We get the task for the Running State - Executing that running state,
* makes the first network call in of the state machine. The Endpoint is in
* the GETVERSION State and we invoke the task.
* <p>
* 6. We assert that this call was a success by checking that each of the
* endponts now have version response that it got from the SCM server that it
* was talking to and also each of the mock server serviced one RPC call.
* <p>
* 7. Since the Register is done now, next calls to get task will return
* HeartbeatTask, which sends heartbeats to SCM. We assert that we get right
* task from sub-system below.
*
* @throws IOException
*/
@Test
public void testDatanodeStateContext() throws IOException,
InterruptedException, ExecutionException, TimeoutException {
final DatanodeStateMachine stateMachine = new DatanodeStateMachine(conf);
DatanodeStateMachine.DatanodeStates currentState =
stateMachine.getContext().getState();
Assert.assertEquals(DatanodeStateMachine.DatanodeStates.INIT,
currentState);
DatanodeState<DatanodeStateMachine.DatanodeStates> task =
stateMachine.getContext().getTask();
Assert.assertEquals(InitDatanodeState.class, task.getClass());
task.execute(executorService);
DatanodeStateMachine.DatanodeStates newState =
task.await(2, TimeUnit.SECONDS);
for (EndpointStateMachine endpoint :
stateMachine.getConnectionManager().getValues()) {
// We assert that each of the is in State GETVERSION.
Assert.assertEquals(EndpointStateMachine.EndPointStates.GETVERSION,
endpoint.getState());
}
// The Datanode has moved into Running State, since endpoints are created.
// We move to running state when we are ready to issue RPC calls to SCMs.
Assert.assertEquals(DatanodeStateMachine.DatanodeStates.RUNNING,
newState);
// If we had called context.execute instead of calling into each state
// this would have happened automatically.
stateMachine.getContext().setState(newState);
task = stateMachine.getContext().getTask();
Assert.assertEquals(RunningDatanodeState.class, task.getClass());
// This execute will invoke getVersion calls against all SCM endpoints
// that we know of.
task.execute(executorService);
newState = task.await(2, TimeUnit.SECONDS);
// If we are in running state, we should be in running.
Assert.assertEquals(DatanodeStateMachine.DatanodeStates.RUNNING,
newState);
for (EndpointStateMachine endpoint :
stateMachine.getConnectionManager().getValues()) {
// Since the earlier task.execute called into GetVersion, the
// endPointState Machine should move to REGISTER state.
Assert.assertEquals(EndpointStateMachine.EndPointStates.REGISTER,
endpoint.getState());
// We assert that each of the end points have gotten a version from the
// SCM Server.
Assert.assertNotNull(endpoint.getVersion());
}
// We can also assert that all mock servers have received only one RPC
// call at this point of time.
for (ScmTestMock mock : mockServers) {
Assert.assertEquals(1, mock.getRpcCount());
}
// This task is the Running task, but running task executes tasks based
// on the state of Endpoints, hence this next call will be a Register at
// the endpoint RPC level.
task = stateMachine.getContext().getTask();
task.execute(executorService);
newState = task.await(2, TimeUnit.SECONDS);
// If we are in running state, we should be in running.
Assert.assertEquals(DatanodeStateMachine.DatanodeStates.RUNNING,
newState);
for (ScmTestMock mock : mockServers) {
Assert.assertEquals(2, mock.getRpcCount());
}
// This task is the Running task, but running task executes tasks based
// on the state of Endpoints, hence this next call will be a
// HeartbeatTask at the endpoint RPC level.
task = stateMachine.getContext().getTask();
task.execute(executorService);
newState = task.await(2, TimeUnit.SECONDS);
// If we are in running state, we should be in running.
Assert.assertEquals(DatanodeStateMachine.DatanodeStates.RUNNING,
newState);
for (ScmTestMock mock : mockServers) {
Assert.assertEquals(1, mock.getHeartbeatCount());
}
}
}

View File

@ -0,0 +1,314 @@
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.ozone.container.common;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.ozone.container.common.statemachine
.EndpointStateMachine;
import org.apache.hadoop.ozone.container.common.states.endpoint
.HeartbeatEndpointTask;
import org.apache.hadoop.ozone.container.common.states.endpoint
.RegisterEndpointTask;
import org.apache.hadoop.ozone.container.common.states.endpoint
.VersionEndpointTask;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.ContainerNodeIDProto;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.SCMHeartbeatResponseProto;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.SCMRegisteredCmdResponseProto;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.SCMVersionResponseProto;
import org.apache.hadoop.ozone.protocol.proto
.StorageContainerDatanodeProtocolProtos.Type;
import org.apache.hadoop.ozone.scm.VersionInfo;
import org.apache.hadoop.util.Time;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;
import org.mockito.internal.matchers.LessOrEqual;
import java.net.InetSocketAddress;
import java.util.UUID;
/**
* Tests the endpoints.
*/
public class TestEndPoint {
private static InetSocketAddress serverAddress;
private static RPC.Server scmServer;
private static ScmTestMock scmServerImpl;
@Test
/**
* This test asserts that we are able to make a version call to SCM server
* and gets back the expected values.
*/
public void testGetVersion() throws Exception {
try (EndpointStateMachine rpcEndPoint =
SCMTestUtils.createEndpoint(SCMTestUtils.getConf(),
serverAddress, 1000)) {
SCMVersionResponseProto responseProto = rpcEndPoint.getEndPoint()
.getVersion();
Assert.assertNotNull(responseProto);
Assert.assertEquals(responseProto.getKeys(0).getKey(),
VersionInfo.DESCRIPTION_KEY);
Assert.assertEquals(responseProto.getKeys(0).getValue(),
VersionInfo.getLatestVersion().getDescription());
}
}
@Test
/**
* We make getVersion RPC call, but via the VersionEndpointTask which is
* how the state machine would make the call.
*/
public void testGetVersionTask() throws Exception {
Configuration conf = SCMTestUtils.getConf();
try (EndpointStateMachine rpcEndPoint = SCMTestUtils.createEndpoint(conf,
serverAddress, 1000)) {
rpcEndPoint.setState(EndpointStateMachine.EndPointStates.GETVERSION);
VersionEndpointTask versionTask = new VersionEndpointTask(rpcEndPoint,
conf);
EndpointStateMachine.EndPointStates newState = versionTask.call();
// if version call worked the endpoint should automatically move to the
// next state.
Assert.assertEquals(EndpointStateMachine.EndPointStates.REGISTER,
newState);
// Now rpcEndpoint should remember the version it got from SCM
Assert.assertNotNull(rpcEndPoint.getVersion());
}
}
@Test
/**
* This test makes a call to end point where there is no SCM server. We
* expect that versionTask should be able to handle it.
*/
public void testGetVersionToInvalidEndpoint() throws Exception {
Configuration conf = SCMTestUtils.getConf();
InetSocketAddress nonExistentServerAddress = SCMTestUtils
.getReuseableAddress();
try (EndpointStateMachine rpcEndPoint = SCMTestUtils.createEndpoint(conf,
nonExistentServerAddress, 1000)) {
rpcEndPoint.setState(EndpointStateMachine.EndPointStates.GETVERSION);
VersionEndpointTask versionTask = new VersionEndpointTask(rpcEndPoint,
conf);
EndpointStateMachine.EndPointStates newState = versionTask.call();
// This version call did NOT work, so endpoint should remain in the same
// state.
Assert.assertEquals(EndpointStateMachine.EndPointStates.GETVERSION,
newState);
}
}
@Test
/**
* This test makes a getVersionRPC call, but the DummyStorageServer is
* going to respond little slowly. We will assert that we are still in the
* GETVERSION state after the timeout.
*/
public void testGetVersionAssertRpcTimeOut() throws Exception {
final long rpcTimeout = 1000;
final long tolerance = 100;
Configuration conf = SCMTestUtils.getConf();
try (EndpointStateMachine rpcEndPoint = SCMTestUtils.createEndpoint(conf,
serverAddress, (int) rpcTimeout)) {
rpcEndPoint.setState(EndpointStateMachine.EndPointStates.GETVERSION);
VersionEndpointTask versionTask = new VersionEndpointTask(rpcEndPoint,
conf);
scmServerImpl.setRpcResponseDelay(1500);
long start = Time.monotonicNow();
EndpointStateMachine.EndPointStates newState = versionTask.call();
long end = Time.monotonicNow();
scmServerImpl.setRpcResponseDelay(0);
Assert.assertThat(end - start, new LessOrEqual<>(rpcTimeout + tolerance));
Assert.assertEquals(EndpointStateMachine.EndPointStates.GETVERSION,
newState);
}
}
@Test
public void testRegister() throws Exception {
String[] scmAddressArray = new String[1];
scmAddressArray[0] = serverAddress.toString();
DatanodeID nodeToRegister = SCMTestUtils.getDatanodeID();
try (EndpointStateMachine rpcEndPoint =
SCMTestUtils.createEndpoint(
SCMTestUtils.getConf(), serverAddress, 1000)) {
SCMRegisteredCmdResponseProto responseProto = rpcEndPoint.getEndPoint()
.register(nodeToRegister, scmAddressArray);
Assert.assertNotNull(responseProto);
Assert.assertEquals(responseProto.getDatanodeUUID(),
nodeToRegister.getDatanodeUuid());
Assert.assertNotNull(responseProto.getClusterID());
}
}
private EndpointStateMachine registerTaskHelper(InetSocketAddress scmAddress,
int rpcTimeout, boolean clearContainerID) throws Exception {
EndpointStateMachine rpcEndPoint =
SCMTestUtils.createEndpoint(SCMTestUtils.getConf(),
scmAddress, rpcTimeout);
rpcEndPoint.setState(EndpointStateMachine.EndPointStates.REGISTER);
RegisterEndpointTask endpointTask =
new RegisterEndpointTask(rpcEndPoint, SCMTestUtils.getConf());
if (!clearContainerID) {
ContainerNodeIDProto containerNodeID = ContainerNodeIDProto.newBuilder()
.setClusterID(UUID.randomUUID().toString())
.setDatanodeID(SCMTestUtils.getDatanodeID().getProtoBufMessage())
.build();
endpointTask.setContainerNodeIDProto(containerNodeID);
}
endpointTask.call();
return rpcEndPoint;
}
@Test
public void testRegisterTask() throws Exception {
try (EndpointStateMachine rpcEndpoint =
registerTaskHelper(serverAddress, 1000, false)) {
// Successful register should move us to Heartbeat state.
Assert.assertEquals(EndpointStateMachine.EndPointStates.HEARTBEAT,
rpcEndpoint.getState());
}
}
@Test
public void testRegisterToInvalidEndpoint() throws Exception {
InetSocketAddress address = SCMTestUtils.getReuseableAddress();
try (EndpointStateMachine rpcEndpoint =
registerTaskHelper(address, 1000, false)) {
Assert.assertEquals(EndpointStateMachine.EndPointStates.REGISTER,
rpcEndpoint.getState());
}
}
@Test
public void testRegisterNoContainerID() throws Exception {
InetSocketAddress address = SCMTestUtils.getReuseableAddress();
try (EndpointStateMachine rpcEndpoint =
registerTaskHelper(address, 1000, true)) {
// No Container ID, therefore we tell the datanode that we would like to
// shutdown.
Assert.assertEquals(EndpointStateMachine.EndPointStates.SHUTDOWN,
rpcEndpoint.getState());
}
}
@Test
public void testRegisterRpcTimeout() throws Exception {
final long rpcTimeout = 1000;
final long tolerance = 200;
scmServerImpl.setRpcResponseDelay(1500);
long start = Time.monotonicNow();
registerTaskHelper(serverAddress, 1000, false).close();
long end = Time.monotonicNow();
scmServerImpl.setRpcResponseDelay(0);
Assert.assertThat(end - start, new LessOrEqual<>(rpcTimeout + tolerance));
}
@Test
public void testHeartbeat() throws Exception {
DatanodeID dataNode = SCMTestUtils.getDatanodeID();
try (EndpointStateMachine rpcEndPoint =
SCMTestUtils.createEndpoint(SCMTestUtils.getConf(),
serverAddress, 1000)) {
SCMHeartbeatResponseProto responseProto = rpcEndPoint.getEndPoint()
.sendHeartbeat(dataNode);
Assert.assertNotNull(responseProto);
Assert.assertEquals(1, responseProto.getCommandsCount());
Assert.assertNotNull(responseProto.getCommandsList().get(0));
Assert.assertEquals(responseProto.getCommandsList().get(0).getCmdType(),
Type.nullCmd);
}
}
private EndpointStateMachine heartbeatTaskHelper(InetSocketAddress scmAddress,
int rpcTimeout) throws Exception {
EndpointStateMachine rpcEndPoint = SCMTestUtils.createEndpoint(
SCMTestUtils.getConf(),
scmAddress, rpcTimeout);
ContainerNodeIDProto containerNodeID = ContainerNodeIDProto.newBuilder()
.setClusterID(UUID.randomUUID().toString())
.setDatanodeID(SCMTestUtils.getDatanodeID().getProtoBufMessage())
.build();
rpcEndPoint.setState(EndpointStateMachine.EndPointStates.HEARTBEAT);
HeartbeatEndpointTask endpointTask =
new HeartbeatEndpointTask(rpcEndPoint, SCMTestUtils.getConf());
endpointTask.setContainerNodeIDProto(containerNodeID);
endpointTask.call();
Assert.assertNotNull(endpointTask.getContainerNodeIDProto());
return rpcEndPoint;
}
private void heartbeatTaskHelper(InetSocketAddress address)
throws Exception {
try (EndpointStateMachine rpcEndpoint =
heartbeatTaskHelper(address, 1000)) {
Assert.assertEquals(EndpointStateMachine.EndPointStates.HEARTBEAT,
rpcEndpoint.getState());
}
}
@Test
public void testHeartbeatTask() throws Exception {
heartbeatTaskHelper(serverAddress);
}
@Test
public void testHeartbeatTaskToInvalidNode() throws Exception {
InetSocketAddress invalidAddress = SCMTestUtils.getReuseableAddress();
heartbeatTaskHelper(invalidAddress);
}
@Test
public void testHeartbeatTaskRpcTimeOut() throws Exception {
final long rpcTimeout = 1000;
final long tolerance = 200;
scmServerImpl.setRpcResponseDelay(1500);
long start = Time.monotonicNow();
InetSocketAddress invalidAddress = SCMTestUtils.getReuseableAddress();
heartbeatTaskHelper(invalidAddress);
long end = Time.monotonicNow();
scmServerImpl.setRpcResponseDelay(0);
Assert.assertThat(end - start, new LessOrEqual<>(rpcTimeout + tolerance));
}
@AfterClass
public static void tearDown() throws Exception {
if (scmServer != null) {
scmServer.stop();
}
}
@BeforeClass
public static void setUp() throws Exception {
serverAddress = SCMTestUtils.getReuseableAddress();
scmServerImpl = new ScmTestMock();
scmServer = SCMTestUtils.startScmRpcServer(SCMTestUtils.getConf(),
scmServerImpl, serverAddress, 10);
}
}

View File

@ -21,7 +21,7 @@ import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.protocol.DatanodeID;
import org.apache.hadoop.ozone.OzoneConfigKeys;
import org.apache.hadoop.ozone.OzoneConfiguration;
import org.apache.hadoop.ozone.protocol.commands.RegisteredCommand;
import org.apache.hadoop.ozone.container.common.SCMTestUtils;
import org.apache.hadoop.test.GenericTestUtils;
import org.hamcrest.CoreMatchers;
import org.junit.Assert;
@ -33,7 +33,6 @@ import org.junit.rules.ExpectedException;
import java.io.IOException;
import java.util.LinkedList;
import java.util.List;
import java.util.Random;
import java.util.UUID;
import java.util.concurrent.TimeoutException;
@ -72,37 +71,6 @@ public class TestNodeManager {
return new OzoneConfiguration();
}
/**
* Create a new datanode ID.
*
* @return DatanodeID
*/
DatanodeID getDatanodeID(SCMNodeManager nodeManager) {
return getDatanodeID(nodeManager, UUID.randomUUID().toString());
}
/**
* Create a new DatanodeID with NodeID set to the string.
*
* @param uuid - node ID, it is generally UUID.
* @return DatanodeID.
*/
DatanodeID getDatanodeID(SCMNodeManager nodeManager, String uuid) {
Random random = new Random();
String ipAddress = random.nextInt(256) + "."
+ random.nextInt(256) + "."
+ random.nextInt(256) + "."
+ random.nextInt(256);
String hostName = uuid;
DatanodeID tempDataNode = new DatanodeID(ipAddress,
hostName, uuid, 0, 0, 0, 0);
RegisteredCommand command =
(RegisteredCommand) nodeManager.register(tempDataNode);
return new DatanodeID(command.getDatanodeUUID(), tempDataNode);
}
/**
* Creates a NodeManager.
*
@ -134,7 +102,7 @@ public class TestNodeManager {
try (SCMNodeManager nodeManager = createNodeManager(getConf())) {
// Send some heartbeats from different nodes.
for (int x = 0; x < nodeManager.getMinimumChillModeNodes(); x++) {
DatanodeID datanodeID = getDatanodeID(nodeManager);
DatanodeID datanodeID = SCMTestUtils.getDatanodeID(nodeManager);
nodeManager.sendHeartbeat(datanodeID);
}
@ -181,7 +149,7 @@ public class TestNodeManager {
// Need 100 nodes to come out of chill mode, only one node is sending HB.
nodeManager.setMinimumChillModeNodes(100);
nodeManager.sendHeartbeat(getDatanodeID(nodeManager));
nodeManager.sendHeartbeat(SCMTestUtils.getDatanodeID(nodeManager));
GenericTestUtils.waitFor(() -> nodeManager.waitForHeartbeatThead(), 100,
4 * 1000);
assertFalse("Not enough heartbeat, Node manager should have been in " +
@ -203,7 +171,7 @@ public class TestNodeManager {
try (SCMNodeManager nodeManager = createNodeManager(getConf())) {
nodeManager.setMinimumChillModeNodes(3);
DatanodeID datanodeID = getDatanodeID(nodeManager);
DatanodeID datanodeID = SCMTestUtils.getDatanodeID(nodeManager);
// Send 10 heartbeat from same node, and assert we never leave chill mode.
for (int x = 0; x < 10; x++) {
@ -232,7 +200,7 @@ public class TestNodeManager {
Configuration conf = getConf();
conf.setInt(OzoneConfigKeys.OZONE_SCM_HEARTBEAT_PROCESS_INTERVAL_MS, 100);
SCMNodeManager nodeManager = createNodeManager(conf);
DatanodeID datanodeID = getDatanodeID(nodeManager);
DatanodeID datanodeID = SCMTestUtils.getDatanodeID(nodeManager);
nodeManager.close();
// These should never be processed.
@ -262,7 +230,7 @@ public class TestNodeManager {
try (SCMNodeManager nodeManager = createNodeManager(conf)) {
for (int x = 0; x < count; x++) {
DatanodeID datanodeID = getDatanodeID(nodeManager);
DatanodeID datanodeID = SCMTestUtils.getDatanodeID(nodeManager);
nodeManager.sendHeartbeat(datanodeID);
}
GenericTestUtils.waitFor(() -> nodeManager.waitForHeartbeatThead(), 100,
@ -346,7 +314,7 @@ public class TestNodeManager {
try (SCMNodeManager nodeManager = createNodeManager(conf)) {
List<DatanodeID> nodeList = createNodeSet(nodeManager, nodeCount,
"staleNode");
DatanodeID staleNode = getDatanodeID(nodeManager);
DatanodeID staleNode = SCMTestUtils.getDatanodeID(nodeManager);
// Heartbeat once
nodeManager.sendHeartbeat(staleNode);
@ -396,7 +364,7 @@ public class TestNodeManager {
List<DatanodeID> nodeList = createNodeSet(nodeManager, nodeCount,
"Node");
DatanodeID deadNode = getDatanodeID(nodeManager);
DatanodeID deadNode = SCMTestUtils.getDatanodeID(nodeManager);
// Heartbeat once
nodeManager.sendHeartbeat(deadNode);
@ -427,28 +395,6 @@ public class TestNodeManager {
}
}
/**
* Asserts that if we get duplicate registration calls for a datanode, we will
* ignore it and LOG the error.
*
* @throws IOException
* @throws InterruptedException
* @throws TimeoutException
*/
@Test
public void testScmDuplicateRegistrationLogsError() throws IOException,
InterruptedException, TimeoutException {
try (SCMNodeManager nodeManager = createNodeManager(getConf())) {
GenericTestUtils.LogCapturer logCapturer =
GenericTestUtils.LogCapturer.captureLogs(SCMNodeManager.LOG);
DatanodeID duplicateNodeID = getDatanodeID(nodeManager);
nodeManager.register(duplicateNodeID);
logCapturer.stopCapturing();
assertThat(logCapturer.getOutput(), containsString("Datanode is already" +
" registered."));
}
}
/**
* Asserts that we log an error for null in datanode ID.
*
@ -532,9 +478,12 @@ public class TestNodeManager {
* Cluster state: Healthy: All nodes are heartbeat-ing like normal.
*/
try (SCMNodeManager nodeManager = createNodeManager(conf)) {
DatanodeID healthyNode = getDatanodeID(nodeManager, "HealthyNode");
DatanodeID staleNode = getDatanodeID(nodeManager, "StaleNode");
DatanodeID deadNode = getDatanodeID(nodeManager, "DeadNode");
DatanodeID healthyNode =
SCMTestUtils.getDatanodeID(nodeManager, "HealthyNode");
DatanodeID staleNode =
SCMTestUtils.getDatanodeID(nodeManager, "StaleNode");
DatanodeID deadNode =
SCMTestUtils.getDatanodeID(nodeManager, "DeadNode");
nodeManager.sendHeartbeat(healthyNode);
nodeManager.sendHeartbeat(staleNode);
nodeManager.sendHeartbeat(deadNode);
@ -659,7 +608,7 @@ public class TestNodeManager {
prefix) {
List<DatanodeID> list = new LinkedList<>();
for (int x = 0; x < count; x++) {
list.add(getDatanodeID(nodeManager, prefix + x));
list.add(SCMTestUtils.getDatanodeID(nodeManager, prefix + x));
}
return list;
}
@ -878,7 +827,7 @@ public class TestNodeManager {
try (SCMNodeManager nodeManager = createNodeManager(conf)) {
nodeManager.setMinimumChillModeNodes(10);
DatanodeID datanodeID = getDatanodeID(nodeManager);
DatanodeID datanodeID = SCMTestUtils.getDatanodeID(nodeManager);
nodeManager.sendHeartbeat(datanodeID);
String status = nodeManager.getChillModeStatus();
Assert.assertThat(status, CoreMatchers.containsString("Still in chill " +
@ -908,7 +857,7 @@ public class TestNodeManager {
// Assert that node manager force enter cannot be overridden by nodes HBs.
for(int x= 0; x < 20; x++) {
DatanodeID datanode = getDatanodeID(nodeManager);
DatanodeID datanode = SCMTestUtils.getDatanodeID(nodeManager);
nodeManager.sendHeartbeat(datanode);
}