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Palantir open source project
/*
* 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.cassandra.repair;
import java.io.IOException;
import java.net.InetAddress;
import java.util.Collection;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import com.google.common.util.concurrent.AbstractFuture;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.db.SystemKeyspace;
import org.apache.cassandra.dht.Range;
import org.apache.cassandra.dht.Token;
import org.apache.cassandra.gms.ApplicationState;
import org.apache.cassandra.gms.EndpointState;
import org.apache.cassandra.gms.FailureDetector;
import org.apache.cassandra.gms.IEndpointStateChangeSubscriber;
import org.apache.cassandra.gms.IFailureDetectionEventListener;
import org.apache.cassandra.gms.VersionedValue;
import org.apache.cassandra.net.IAsyncCallbackWithFailure;
import org.apache.cassandra.net.MessageIn;
import org.apache.cassandra.net.MessagingService;
import org.apache.cassandra.repair.messages.AnticompactionRequest;
import org.apache.cassandra.utils.CassandraVersion;
public class AnticompactionTask extends AbstractFuture implements Runnable, IEndpointStateChangeSubscriber,
IFailureDetectionEventListener
{
/*
* Version that anticompaction response is not supported up to.
* If Cassandra version is more than this, we need to wait for anticompaction response.
*/
private static final CassandraVersion VERSION_CHECKER = new CassandraVersion("2.1.5");
private static Logger logger = LoggerFactory.getLogger(AnticompactionTask.class);
private final UUID parentSession;
private final InetAddress neighbor;
private final Collection> successfulRanges;
private final AtomicBoolean isFinished = new AtomicBoolean(false);
public AnticompactionTask(UUID parentSession, InetAddress neighbor, Collection> successfulRanges)
{
this.parentSession = parentSession;
this.neighbor = neighbor;
this.successfulRanges = successfulRanges;
}
public void run()
{
if (FailureDetector.instance.isAlive(neighbor))
{
AnticompactionRequest acr = new AnticompactionRequest(parentSession, successfulRanges);
CassandraVersion peerVersion = SystemKeyspace.getReleaseVersion(neighbor);
if (peerVersion != null && peerVersion.compareTo(VERSION_CHECKER) > 0)
{
MessagingService.instance().sendRR(acr.createMessage(), neighbor, new AnticompactionCallback(this), TimeUnit.DAYS.toMillis(1), true);
}
else
{
// immediately return after sending request
MessagingService.instance().sendOneWay(acr.createMessage(), neighbor);
maybeSetResult(neighbor);
}
}
else
{
maybeSetException(new IOException(neighbor + " is down"));
}
}
private boolean maybeSetException(Throwable t)
{
if (isFinished.compareAndSet(false, true))
{
setException(t);
return true;
}
return false;
}
private boolean maybeSetResult(InetAddress o)
{
if (isFinished.compareAndSet(false, true))
{
set(o);
return true;
}
return false;
}
/**
* Callback for antitcompaction request. Run on INTERNAL_RESPONSE stage.
*/
public class AnticompactionCallback implements IAsyncCallbackWithFailure
{
final AnticompactionTask task;
public AnticompactionCallback(AnticompactionTask task)
{
this.task = task;
}
public void response(MessageIn msg)
{
maybeSetResult(msg.from);
}
public boolean isLatencyForSnitch()
{
return false;
}
public void onFailure(InetAddress from)
{
maybeSetException(new RuntimeException("Anticompaction failed or timed out in " + from));
}
}
public void onJoin(InetAddress endpoint, EndpointState epState) {}
public void beforeChange(InetAddress endpoint, EndpointState currentState, ApplicationState newStateKey, VersionedValue newValue) {}
public void onChange(InetAddress endpoint, ApplicationState state, VersionedValue value) {}
public void onAlive(InetAddress endpoint, EndpointState state) {}
public void onDead(InetAddress endpoint, EndpointState state) {}
public void onRemove(InetAddress endpoint)
{
convict(endpoint, Double.MAX_VALUE);
}
public void onRestart(InetAddress endpoint, EndpointState epState)
{
convict(endpoint, Double.MAX_VALUE);
}
public void convict(InetAddress endpoint, double phi)
{
if (!neighbor.equals(endpoint))
return;
// We want a higher confidence in the failure detection than usual because failing a repair wrongly has a high cost.
if (phi < 2 * DatabaseDescriptor.getPhiConvictThreshold())
return;
Exception exception = new IOException(String.format("Endpoint %s died during anti-compaction.", endpoint));
if (maybeSetException(exception))
{
// Though unlikely, it is possible to arrive here multiple time and we want to avoid print an error message twice
logger.error("[repair #{}] Endpoint {} died during anti-compaction", endpoint, parentSession, exception);
}
}
}