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add a lock not allowing connecting to nodes while shutting down

This commit is contained in:
Shay Banon 2012-08-24 02:23:43 +02:00
parent 333293babd
commit 36ff6c9b8b
1 changed files with 54 additions and 36 deletions
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22
src/main/java/org/elasticsearch/transport/netty/NettyTransport.java
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@ -65,6 +65,8 @@ import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import static org.elasticsearch.common.network.NetworkService.TcpSettings.*;
import static org.elasticsearch.common.settings.ImmutableSettings.Builder.EMPTY_SETTINGS;
@ -138,6 +140,9 @@ public class NettyTransport extends AbstractLifecycleComponent<Transport> implem
private volatile BoundTransportAddress boundAddress;
private final Object[] connectMutex;
// this lock is here to make sure we close this transport and disconnect all the client nodes
// connections while no connect operations is going on... (this might help with 100% CPU when stopping the transport?)
private final ReadWriteLock globalLock = new ReentrantReadWriteLock();
public NettyTransport(ThreadPool threadPool) {
this(EMPTY_SETTINGS, threadPool, new NetworkService(EMPTY_SETTINGS));
@ -367,6 +372,7 @@ public class NettyTransport extends AbstractLifecycleComponent<Transport> implem
threadPool.generic().execute(new Runnable() {
@Override
public void run() {
globalLock.writeLock().lock();
try {
for (Iterator<NodeChannels> it = connectedNodes.values().iterator(); it.hasNext(); ) {
NodeChannels nodeChannels = it.next();
@ -403,6 +409,7 @@ public class NettyTransport extends AbstractLifecycleComponent<Transport> implem
clientBootstrap = null;
}
} finally {
globalLock.writeLock().unlock();
latch.countDown();
}
}
@ -535,12 +542,20 @@ public class NettyTransport extends AbstractLifecycleComponent<Transport> implem
public void connectToNode(DiscoveryNode node, boolean light) {
if (!lifecycle.started()) {
throw new ElasticSearchIllegalStateException("Can't add nodes to a stopped transport");
throw new ElasticSearchIllegalStateException("can't add nodes to a stopped transport");
}
if (node == null) {
throw new ConnectTransportException(null, "Can't connect to a null node");
throw new ConnectTransportException(null, "can't connect to a null node");
}
globalLock.readLock().lock();
try {
if (!lifecycle.started()) {
throw new ElasticSearchIllegalStateException("can't add nodes to a stopped transport");
}
synchronized (connectLock(node.id())) {
if (!lifecycle.started()) {
throw new ElasticSearchIllegalStateException("can't add nodes to a stopped transport");
}
try {
NodeChannels nodeChannels = connectedNodes.get(node);
if (nodeChannels != null) {
@ -576,6 +591,9 @@ public class NettyTransport extends AbstractLifecycleComponent<Transport> implem
throw new ConnectTransportException(node, "General node connection failure", e);
}
}
} finally {
globalLock.readLock().unlock();
}
}
private NodeChannels connectToChannelsLight(DiscoveryNode node) {