On Wed, Dec 28, 2011 at 1:53 PM, Camille Fournier <cami...@apache.org> wrote: > Fair enough. Syncs for all! It's a drop in the bucket compared to the fact > that we aren't handling the fundamental socket connections for 4lws > correctly anyway.
sorry. I see a blog post coming on. ;-) You're referring to the following (any more?) https://issues.apache.org/jira/browse/ZOOKEEPER-1197 https://issues.apache.org/jira/browse/ZOOKEEPER-1237 is this comment still a correct interpretation of the issue? https://issues.apache.org/jira/browse/ZOOKEEPER-737?focusedCommentId=13109067&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13109067 What would you like to do about these? I had proposed having a separate 4lw port some time back in order to simplify/isolate. Should we do this for 3.5.0? (deprecate the old port usage but keep it around for a while) Something else? Patrick > On Wed, Dec 28, 2011 at 4:32 PM, Patrick Hunt <ph...@apache.org> wrote: > >> On Wed, Dec 28, 2011 at 1:26 PM, Camille Fournier <cami...@apache.org> >> wrote: >> > I'm not sure I agree in the assumption that monitoring pulls happen >> > infrequently... >> >> Well that would be bad news then - see "stat" command processing and >> similar. All the more reason to look at this in more depth. >> >> Patrick >> >> >> > On Dec 28, 2011 4:24 PM, "Patrick Hunt" <ph...@apache.org> wrote: >> > >> >> They seem like distinct changes to me. In particular getting the size >> >> is going to happen infrequently (monitoring pull) so I don't see a >> >> problem fixing the existing patch in the same way the code currently >> >> handles cnxns access, with a separate jira to do the refactoring. Am I >> >> missing something? >> >> >> >> Patrick >> >> >> >> On Wed, Dec 28, 2011 at 1:10 PM, Camille Fournier <cami...@apache.org> >> >> wrote: >> >> > I don't think creating it as a flat sync is a good idea, so if we want >> >> this >> >> > I think we need to refactor that structure to be concurrent. >> >> > >> >> > C >> >> > On Dec 28, 2011 2:24 PM, "Patrick Hunt" <ph...@apache.org> wrote: >> >> > >> >> >> I think it needs to be fixed. It's obviously incorrect. Also if >> >> >> someone changes the underlying implementation at some point it might >> >> >> bite them. >> >> >> >> >> >> Given it wasn't applied to 3.4 branch yet I'd suggest revert, fix the >> >> >> patch, then reapply to both branches. (that's easiest/bulletproof >> imo) >> >> >> >> >> >> I'd recommend a new ticket to fix the issues you identified >> (refactor, >> >> >> etc...) Neha was looking for further items to work on, this would be >> a >> >> >> good one. >> >> >> >> >> >> Patrick >> >> >> >> >> >> On Wed, Dec 28, 2011 at 11:18 AM, Camille Fournier < >> cami...@apache.org> >> >> >> wrote: >> >> >> > Also, Pat, the JIRA is still open. I will look to revert in a >> minute >> >> >> > although I think the sync changes may necessitate a new JIRA >> entirely. >> >> >> > >> >> >> > On Wed, Dec 28, 2011 at 1:31 PM, Camille Fournier < >> cami...@apache.org >> >> > >> >> >> wrote: >> >> >> >> After looking for a few mins, here are my observations: >> >> >> >> >> >> >> >> The implementation of HashSet in jdk 1.6 uses an underlying >> HashMap, >> >> >> which >> >> >> >> uses a bog-standard int for the size. So, I completely agree that >> we >> >> can >> >> >> >> get invalid results for a point in time. But does anyone really >> care >> >> >> about >> >> >> >> the *exact* moment-in-time number of cnxns in the system, in a >> system >> >> >> where >> >> >> >> cnxns are coming and going? At best you'll see a value that will >> >> likely >> >> >> be >> >> >> >> out of date the moment you read it. >> >> >> >> >> >> >> >> But, if we're going to do this, I do think there may be a case for >> >> >> >> refactoring to a concurrent data structure given that we are >> randomly >> >> >> >> syncing on the cnxns set in a way that makes adding additional >> >> >> interactions >> >> >> >> with it error prone in this way. And we should definitely remove >> that >> >> >> >> getConnections method, if anyone ever iterated over that set they >> >> would >> >> >> be >> >> >> >> in a sad concurrency situation. >> >> >> >> Seems possibly worth a whole new ticket to do this. What do you >> >> think? >> >> >> >> >> >> >> >> Thanks, >> >> >> >> C >> >> >> >> >> >> >> >> On Wed, Dec 28, 2011 at 1:12 PM, Camille Fournier < >> >> cami...@apache.org >> >> >> >wrote: >> >> >> >> >> >> >> >>> I'm not sure it's meaningful enough to be worth the sync >> overhead. >> >> We >> >> >> >>> should look into that. The alternative if we must is using a >> proper >> >> >> >>> concurrent collection. Neha, any thoughts? >> >> >> >>> >> >> >> >>> C >> >> >> >>> On Dec 28, 2011 12:45 PM, "Patrick Hunt" <ph...@apache.org> >> wrote: >> >> >> >>> >> >> >> >>>> I believe there is a bug in this commit. The "cnxns" size() >> call is >> >> >> >>>> not being synchronized. This will lead to invalid results at >> best, >> >> at >> >> >> >>>> worst outright failure (hard to say w/o knowing the >> implementation >> >> of >> >> >> >>>> HashSet). >> >> >> >>>> >> >> >> >>>> Camille can you work with Neha to get this fixed? Perhaps in the >> >> >> >>>> meantime (if it's going to take a while) you can revert this >> >> change, >> >> >> >>>> re-open the jira, update the patch, and reapply at some later >> time? >> >> >> >>>> >> >> >> >>>> Patrick >> >> >> >>>> >> >> >> >>>> On Wed, Dec 28, 2011 at 6:55 AM, <cami...@apache.org> wrote: >> >> >> >>>> > Author: camille >> >> >> >>>> > Date: Wed Dec 28 14:55:37 2011 >> >> >> >>>> > New Revision: 1225200 >> >> >> >>>> > >> >> >> >>>> > URL: http://svn.apache.org/viewvc?rev=1225200&view=rev >> >> >> >>>> > Log: >> >> >> >>>> > ZOOKEEPER-1321: Add number of client connections metric in JMX >> >> and >> >> >> srvr >> >> >> >>>> (Neha Narkhede via camille) >> >> >> >>>> > >> >> >> >>>> > Modified: >> >> >> >>>> > zookeeper/trunk/CHANGES.txt >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NIOServerCnxn.java >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NIOServerCnxnFactory.java >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NettyServerCnxn.java >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NettyServerCnxnFactory.java >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ServerCnxnFactory.java >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ServerStats.java >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ZooKeeperServer.java >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ZooKeeperServerBean.java >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ZooKeeperServerMXBean.java >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/test/org/apache/zookeeper/server/quorum/Zab1_0Test.java >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/test/org/apache/zookeeper/test/FourLetterWordsTest.java >> >> >> >>>> > >> >> >> >>>> > Modified: zookeeper/trunk/CHANGES.txt >> >> >> >>>> > URL: >> >> >> >>>> >> >> >> >> >> >> http://svn.apache.org/viewvc/zookeeper/trunk/CHANGES.txt?rev=1225200&r1=1225199&r2=1225200&view=diff >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> ============================================================================== >> >> >> >>>> > --- zookeeper/trunk/CHANGES.txt (original) >> >> >> >>>> > +++ zookeeper/trunk/CHANGES.txt Wed Dec 28 14:55:37 2011 >> >> >> >>>> > @@ -162,6 +162,8 @@ IMPROVEMENTS: >> >> >> >>>> > >> >> >> >>>> > ZOOKEEPER-1342. quorum Listener & LearnerCnxAcceptor are >> >> missing >> >> >> >>>> > thread names (Rakesh R via phunt) >> >> >> >>>> > + >> >> >> >>>> > + ZOOKEEPER-1321. Add number of client connections metric in >> JMX >> >> >> and >> >> >> >>>> srvr (Neha Narkhede via camille) >> >> >> >>>> > >> >> >> >>>> > Release 3.4.0 - >> >> >> >>>> > >> >> >> >>>> > >> >> >> >>>> > Modified: >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NIOServerCnxn.java >> >> >> >>>> > URL: >> >> >> >>>> >> >> >> >> >> >> http://svn.apache.org/viewvc/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NIOServerCnxn.java?rev=1225200&r1=1225199&r2=1225200&view=diff >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> ============================================================================== >> >> >> >>>> > --- >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NIOServerCnxn.java >> >> >> >>>> (original) >> >> >> >>>> > +++ >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NIOServerCnxn.java >> >> >> >>>> Wed Dec 28 14:55:37 2011 >> >> >> >>>> > @@ -749,7 +749,8 @@ public class NIOServerCnxn extends Serve >> >> >> >>>> > >> >> >> >>>> > print("packets_received", >> >> stats.getPacketsReceived()); >> >> >> >>>> > print("packets_sent", stats.getPacketsSent()); >> >> >> >>>> > - >> >> >> >>>> > + print("num_alive_connections", >> >> >> >>>> stats.getNumAliveClientConnections()); >> >> >> >>>> > + >> >> >> >>>> > print("outstanding_requests", >> >> >> >>>> stats.getOutstandingRequests()); >> >> >> >>>> > >> >> >> >>>> > print("server_state", stats.getServerState()); >> >> >> >>>> > >> >> >> >>>> > Modified: >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NIOServerCnxnFactory.java >> >> >> >>>> > URL: >> >> >> >>>> >> >> >> >> >> >> http://svn.apache.org/viewvc/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NIOServerCnxnFactory.java?rev=1225200&r1=1225199&r2=1225200&view=diff >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> ============================================================================== >> >> >> >>>> > --- >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NIOServerCnxnFactory.java >> >> >> >>>> (original) >> >> >> >>>> > +++ >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NIOServerCnxnFactory.java >> >> >> >>>> Wed Dec 28 14:55:37 2011 >> >> >> >>>> > @@ -32,14 +32,14 @@ import java.util.HashMap; >> >> >> >>>> > import java.util.HashSet; >> >> >> >>>> > import java.util.Set; >> >> >> >>>> > >> >> >> >>>> > +import javax.security.auth.login.Configuration; >> >> >> >>>> > +import javax.security.auth.login.LoginException; >> >> >> >>>> > + >> >> >> >>>> > import org.apache.zookeeper.Login; >> >> >> >>>> > import >> >> org.apache.zookeeper.server.auth.SaslServerCallbackHandler; >> >> >> >>>> > import org.slf4j.Logger; >> >> >> >>>> > import org.slf4j.LoggerFactory; >> >> >> >>>> > >> >> >> >>>> > -import javax.security.auth.login.Configuration; >> >> >> >>>> > -import javax.security.auth.login.LoginException; >> >> >> >>>> > - >> >> >> >>>> > public class NIOServerCnxnFactory extends ServerCnxnFactory >> >> >> implements >> >> >> >>>> Runnable { >> >> >> >>>> > private static final Logger LOG = >> >> >> >>>> LoggerFactory.getLogger(NIOServerCnxnFactory.class); >> >> >> >>>> > >> >> >> >>>> > @@ -78,7 +78,6 @@ public class NIOServerCnxnFactory extend >> >> >> >>>> > >> >> >> >>>> > int maxClientCnxns = 60; >> >> >> >>>> > >> >> >> >>>> > - >> >> >> >>>> > /** >> >> >> >>>> > * Construct a new server connection factory which will >> >> accept >> >> >> an >> >> >> >>>> unlimited number >> >> >> >>>> > * of concurrent connections from each client (up to the >> file >> >> >> >>>> descriptor >> >> >> >>>> > @@ -122,7 +121,7 @@ public class NIOServerCnxnFactory extend >> >> >> >>>> > public void setMaxClientCnxnsPerHost(int max) { >> >> >> >>>> > maxClientCnxns = max; >> >> >> >>>> > } >> >> >> >>>> > - >> >> >> >>>> > + >> >> >> >>>> > @Override >> >> >> >>>> > public void start() { >> >> >> >>>> > // ensure thread is started once and only once >> >> >> >>>> > @@ -187,7 +186,7 @@ public class NIOServerCnxnFactory extend >> >> >> >>>> > return s.size(); >> >> >> >>>> > } >> >> >> >>>> > } >> >> >> >>>> > - >> >> >> >>>> > + >> >> >> >>>> > public void run() { >> >> >> >>>> > while (!ss.socket().isClosed()) { >> >> >> >>>> > try { >> >> >> >>>> > @@ -323,4 +322,8 @@ public class NIOServerCnxnFactory extend >> >> >> >>>> > return cnxns; >> >> >> >>>> > } >> >> >> >>>> > >> >> >> >>>> > + @Override >> >> >> >>>> > + public int getNumAliveConnections() { >> >> >> >>>> > + return cnxns.size(); >> >> >> >>>> > + } >> >> >> >>>> > } >> >> >> >>>> > >> >> >> >>>> > Modified: >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NettyServerCnxn.java >> >> >> >>>> > URL: >> >> >> >>>> >> >> >> >> >> >> http://svn.apache.org/viewvc/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NettyServerCnxn.java?rev=1225200&r1=1225199&r2=1225200&view=diff >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> ============================================================================== >> >> >> >>>> > --- >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NettyServerCnxn.java >> >> >> >>>> (original) >> >> >> >>>> > +++ >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NettyServerCnxn.java >> >> >> >>>> Wed Dec 28 14:55:37 2011 >> >> >> >>>> > @@ -560,7 +560,8 @@ public class NettyServerCnxn extends Ser >> >> >> >>>> > >> >> >> >>>> > print("packets_received", >> >> stats.getPacketsReceived()); >> >> >> >>>> > print("packets_sent", stats.getPacketsSent()); >> >> >> >>>> > - >> >> >> >>>> > + print("num_alive_connections", >> >> >> >>>> stats.getNumAliveClientConnections()); >> >> >> >>>> > + >> >> >> >>>> > print("outstanding_requests", >> >> >> >>>> stats.getOutstandingRequests()); >> >> >> >>>> > >> >> >> >>>> > print("server_state", stats.getServerState()); >> >> >> >>>> > >> >> >> >>>> > Modified: >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NettyServerCnxnFactory.java >> >> >> >>>> > URL: >> >> >> >>>> >> >> >> >> >> >> http://svn.apache.org/viewvc/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NettyServerCnxnFactory.java?rev=1225200&r1=1225199&r2=1225200&view=diff >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> ============================================================================== >> >> >> >>>> > --- >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NettyServerCnxnFactory.java >> >> >> >>>> (original) >> >> >> >>>> > +++ >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/NettyServerCnxnFactory.java >> >> >> >>>> Wed Dec 28 14:55:37 2011 >> >> >> >>>> > @@ -411,5 +411,10 @@ public class NettyServerCnxnFactory exte >> >> >> >>>> > } >> >> >> >>>> > } >> >> >> >>>> > } >> >> >> >>>> > + >> >> >> >>>> > + @Override >> >> >> >>>> > + public int getNumAliveConnections() { >> >> >> >>>> > + return cnxns.size(); >> >> >> >>>> > + } >> >> >> >>>> > >> >> >> >>>> > } >> >> >> >>>> > >> >> >> >>>> > Modified: >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ServerCnxnFactory.java >> >> >> >>>> > URL: >> >> >> >>>> >> >> >> >> >> >> http://svn.apache.org/viewvc/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ServerCnxnFactory.java?rev=1225200&r1=1225199&r2=1225200&view=diff >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> ============================================================================== >> >> >> >>>> > --- >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ServerCnxnFactory.java >> >> >> >>>> (original) >> >> >> >>>> > +++ >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ServerCnxnFactory.java >> >> >> >>>> Wed Dec 28 14:55:37 2011 >> >> >> >>>> > @@ -24,15 +24,16 @@ import java.nio.ByteBuffer; >> >> >> >>>> > import java.util.HashMap; >> >> >> >>>> > >> >> >> >>>> > import javax.management.JMException; >> >> >> >>>> > -import org.slf4j.Logger; >> >> >> >>>> > -import org.slf4j.LoggerFactory; >> >> >> >>>> > -import org.apache.zookeeper.jmx.MBeanRegistry; >> >> >> >>>> > + >> >> >> >>>> > import org.apache.zookeeper.Login; >> >> >> >>>> > +import org.apache.zookeeper.jmx.MBeanRegistry; >> >> >> >>>> > import >> >> org.apache.zookeeper.server.auth.SaslServerCallbackHandler; >> >> >> >>>> > +import org.slf4j.Logger; >> >> >> >>>> > +import org.slf4j.LoggerFactory; >> >> >> >>>> > >> >> >> >>>> > public abstract class ServerCnxnFactory { >> >> >> >>>> > >> >> >> >>>> > - public static final String ZOOKEEPER_SERVER_CNXN_FACTORY >> = >> >> >> >>>> "zookeeper.serverCnxnFactory"; >> >> >> >>>> > + public static final String ZOOKEEPER_SERVER_CNXN_FACTORY >> = >> >> >> >>>> "zookeeper.serverCnxnFactory"; >> >> >> >>>> > >> >> >> >>>> > public interface PacketProcessor { >> >> >> >>>> > public void processPacket(ByteBuffer packet, >> ServerCnxn >> >> >> src); >> >> >> >>>> > @@ -49,6 +50,8 @@ public abstract class ServerCnxnFactory >> >> >> >>>> > >> >> >> >>>> > public abstract Iterable<ServerCnxn> getConnections(); >> >> >> >>>> > >> >> >> >>>> > + public abstract int getNumAliveConnections(); >> >> >> >>>> > + >> >> >> >>>> > public abstract void closeSession(long sessionId); >> >> >> >>>> > >> >> >> >>>> > public abstract void configure(InetSocketAddress addr, >> >> >> >>>> > >> >> >> >>>> > Modified: >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ServerStats.java >> >> >> >>>> > URL: >> >> >> >>>> >> >> >> >> >> >> http://svn.apache.org/viewvc/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ServerStats.java?rev=1225200&r1=1225199&r2=1225200&view=diff >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> ============================================================================== >> >> >> >>>> > --- >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ServerStats.java >> >> >> >>>> (original) >> >> >> >>>> > +++ >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ServerStats.java >> >> >> >>>> Wed Dec 28 14:55:37 2011 >> >> >> >>>> > @@ -19,6 +19,7 @@ >> >> >> >>>> > package org.apache.zookeeper.server; >> >> >> >>>> > >> >> >> >>>> > >> >> >> >>>> > + >> >> >> >>>> > /** >> >> >> >>>> > * Basic Server Statistics >> >> >> >>>> > */ >> >> >> >>>> > @@ -29,13 +30,14 @@ public class ServerStats { >> >> >> >>>> > private long minLatency = Long.MAX_VALUE; >> >> >> >>>> > private long totalLatency = 0; >> >> >> >>>> > private long count = 0; >> >> >> >>>> > - >> >> >> >>>> > + >> >> >> >>>> > private final Provider provider; >> >> >> >>>> > >> >> >> >>>> > public interface Provider { >> >> >> >>>> > public long getOutstandingRequests(); >> >> >> >>>> > public long getLastProcessedZxid(); >> >> >> >>>> > public String getState(); >> >> >> >>>> > + public int getNumAliveConnections(); >> >> >> >>>> > } >> >> >> >>>> > >> >> >> >>>> > public ServerStats(Provider provider) { >> >> >> >>>> > @@ -75,9 +77,14 @@ public class ServerStats { >> >> >> >>>> > } >> >> >> >>>> > >> >> >> >>>> > public String getServerState() { >> >> >> >>>> > - return provider.getState(); >> >> >> >>>> > + return provider.getState(); >> >> >> >>>> > } >> >> >> >>>> > - >> >> >> >>>> > + >> >> >> >>>> > + /** The number of client connections alive to this >> server */ >> >> >> >>>> > + public int getNumAliveClientConnections() { >> >> >> >>>> > + return provider.getNumAliveConnections(); >> >> >> >>>> > + } >> >> >> >>>> > + >> >> >> >>>> > @Override >> >> >> >>>> > public String toString(){ >> >> >> >>>> > StringBuilder sb = new StringBuilder(); >> >> >> >>>> > @@ -85,6 +92,8 @@ public class ServerStats { >> >> >> >>>> > + getAvgLatency() + "/" + getMaxLatency() + >> >> "\n"); >> >> >> >>>> > sb.append("Received: " + getPacketsReceived() + "\n"); >> >> >> >>>> > sb.append("Sent: " + getPacketsSent() + "\n"); >> >> >> >>>> > + sb.append("Connections: " + >> >> getNumAliveClientConnections() >> >> >> + >> >> >> >>>> "\n"); >> >> >> >>>> > + >> >> >> >>>> > if (provider != null) { >> >> >> >>>> > sb.append("Outstanding: " + >> getOutstandingRequests() >> >> + >> >> >> >>>> "\n"); >> >> >> >>>> > sb.append("Zxid: 0x"+ >> >> >> >>>> Long.toHexString(getLastProcessedZxid())+ "\n"); >> >> >> >>>> > @@ -123,7 +132,6 @@ public class ServerStats { >> >> >> >>>> > packetsReceived = 0; >> >> >> >>>> > packetsSent = 0; >> >> >> >>>> > } >> >> >> >>>> > - >> >> >> >>>> > synchronized public void reset() { >> >> >> >>>> > resetLatency(); >> >> >> >>>> > resetRequestCounters(); >> >> >> >>>> > >> >> >> >>>> > Modified: >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ZooKeeperServer.java >> >> >> >>>> > URL: >> >> >> >>>> >> >> >> >> >> >> http://svn.apache.org/viewvc/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ZooKeeperServer.java?rev=1225200&r1=1225199&r2=1225200&view=diff >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> ============================================================================== >> >> >> >>>> > --- >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ZooKeeperServer.java >> >> >> >>>> (original) >> >> >> >>>> > +++ >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ZooKeeperServer.java >> >> >> >>>> Wed Dec 28 14:55:37 2011 >> >> >> >>>> > @@ -109,7 +109,7 @@ public class ZooKeeperServer implements >> >> >> >>>> > private ServerCnxnFactory serverCnxnFactory; >> >> >> >>>> > >> >> >> >>>> > private final ServerStats serverStats; >> >> >> >>>> > - >> >> >> >>>> > + >> >> >> >>>> > void removeCnxn(ServerCnxn cnxn) { >> >> >> >>>> > zkDb.removeCnxn(cnxn); >> >> >> >>>> > } >> >> >> >>>> > @@ -254,7 +254,6 @@ public class ZooKeeperServer implements >> >> >> >>>> > } >> >> >> >>>> > } >> >> >> >>>> > >> >> >> >>>> > - >> >> >> >>>> > /** >> >> >> >>>> > * This should be called from a synchronized block on >> this! >> >> >> >>>> > */ >> >> >> >>>> > @@ -678,6 +677,14 @@ public class ZooKeeperServer implements >> >> >> >>>> > } >> >> >> >>>> > >> >> >> >>>> > /** >> >> >> >>>> > + * return the total number of client connections that are >> >> alive >> >> >> >>>> > + * to this server >> >> >> >>>> > + */ >> >> >> >>>> > + public int getNumAliveConnections() { >> >> >> >>>> > + return serverCnxnFactory.getNumAliveConnections(); >> >> >> >>>> > + } >> >> >> >>>> > + >> >> >> >>>> > + /** >> >> >> >>>> > * trunccate the log to get in sync with others >> >> >> >>>> > * if in a quorum >> >> >> >>>> > * @param zxid the zxid that it needs to get in sync >> >> >> >>>> > >> >> >> >>>> > Modified: >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ZooKeeperServerBean.java >> >> >> >>>> > URL: >> >> >> >>>> >> >> >> >> >> >> http://svn.apache.org/viewvc/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ZooKeeperServerBean.java?rev=1225200&r1=1225199&r2=1225200&view=diff >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> ============================================================================== >> >> >> >>>> > --- >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ZooKeeperServerBean.java >> >> >> >>>> (original) >> >> >> >>>> > +++ >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ZooKeeperServerBean.java >> >> >> >>>> Wed Dec 28 14:55:37 2011 >> >> >> >>>> > @@ -140,4 +140,8 @@ public class ZooKeeperServerBean impleme >> >> >> >>>> > serverStats.resetRequestCounters(); >> >> >> >>>> > serverStats.resetLatency(); >> >> >> >>>> > } >> >> >> >>>> > + >> >> >> >>>> > + public long getNumAliveConnections() { >> >> >> >>>> > + return zks.getNumAliveConnections(); >> >> >> >>>> > + } >> >> >> >>>> > } >> >> >> >>>> > >> >> >> >>>> > Modified: >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ZooKeeperServerMXBean.java >> >> >> >>>> > URL: >> >> >> >>>> >> >> >> >> >> >> http://svn.apache.org/viewvc/zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ZooKeeperServerMXBean.java?rev=1225200&r1=1225199&r2=1225200&view=diff >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> ============================================================================== >> >> >> >>>> > --- >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ZooKeeperServerMXBean.java >> >> >> >>>> (original) >> >> >> >>>> > +++ >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/main/org/apache/zookeeper/server/ZooKeeperServerMXBean.java >> >> >> >>>> Wed Dec 28 14:55:37 2011 >> >> >> >>>> > @@ -103,4 +103,8 @@ public interface ZooKeeperServerMXBean { >> >> >> >>>> > * Reset max latency statistics only. >> >> >> >>>> > */ >> >> >> >>>> > public void resetMaxLatency(); >> >> >> >>>> > + /** >> >> >> >>>> > + * @return number of alive client connections >> >> >> >>>> > + */ >> >> >> >>>> > + public long getNumAliveConnections(); >> >> >> >>>> > } >> >> >> >>>> > >> >> >> >>>> > Modified: >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/test/org/apache/zookeeper/server/quorum/Zab1_0Test.java >> >> >> >>>> > URL: >> >> >> >>>> >> >> >> >> >> >> http://svn.apache.org/viewvc/zookeeper/trunk/src/java/test/org/apache/zookeeper/server/quorum/Zab1_0Test.java?rev=1225200&r1=1225199&r2=1225200&view=diff >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> ============================================================================== >> >> >> >>>> > --- >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/test/org/apache/zookeeper/server/quorum/Zab1_0Test.java >> >> >> >>>> (original) >> >> >> >>>> > +++ >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/test/org/apache/zookeeper/server/quorum/Zab1_0Test.java >> >> >> >>>> Wed Dec 28 14:55:37 2011 >> >> >> >>>> > @@ -212,6 +212,10 @@ public class Zab1_0Test { >> >> >> >>>> > } >> >> >> >>>> > public void closeAll() { >> >> >> >>>> > } >> >> >> >>>> > + @Override >> >> >> >>>> > + public int getNumAliveConnections() { >> >> >> >>>> > + return 0; >> >> >> >>>> > + } >> >> >> >>>> > } >> >> >> >>>> > static Socket[] getSocketPair() throws IOException { >> >> >> >>>> > ServerSocket ss = new ServerSocket(); >> >> >> >>>> > >> >> >> >>>> > Modified: >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/test/org/apache/zookeeper/test/FourLetterWordsTest.java >> >> >> >>>> > URL: >> >> >> >>>> >> >> >> >> >> >> http://svn.apache.org/viewvc/zookeeper/trunk/src/java/test/org/apache/zookeeper/test/FourLetterWordsTest.java?rev=1225200&r1=1225199&r2=1225200&view=diff >> >> >> >>>> > >> >> >> >>>> >> >> >> >> >> >> ============================================================================== >> >> >> >>>> > --- >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/test/org/apache/zookeeper/test/FourLetterWordsTest.java >> >> >> >>>> (original) >> >> >> >>>> > +++ >> >> >> >>>> >> >> >> >> >> >> zookeeper/trunk/src/java/test/org/apache/zookeeper/test/FourLetterWordsTest.java >> >> >> >>>> Wed Dec 28 14:55:37 2011 >> >> >> >>>> > @@ -94,6 +94,9 @@ public class FourLetterWordsTest extends >> >> >> >>>> > verify("srvr", "Outstanding"); >> >> >> >>>> > verify("cons", "queued"); >> >> >> >>>> > verify("mntr", "zk_server_state\tstandalone"); >> >> >> >>>> > + verify("mntr", "num_alive_connections"); >> >> >> >>>> > + verify("stat", "Connections"); >> >> >> >>>> > + verify("srvr", "Connections"); >> >> >> >>>> > } >> >> >> >>>> > >> >> >> >>>> > private String sendRequest(String cmd) throws IOException >> { >> >> >> >>>> > @@ -136,6 +139,8 @@ public class FourLetterWordsTest extends >> >> >> >>>> > line = in.readLine(); >> >> >> >>>> > Assert.assertTrue(Pattern.matches("^Sent: \\d+$", >> line)); >> >> >> >>>> > line = in.readLine(); >> >> >> >>>> > + Assert.assertTrue(Pattern.matches("^Connections: >> \\d+$", >> >> >> >>>> line)); >> >> >> >>>> > + line = in.readLine(); >> >> >> >>>> > Assert.assertTrue(Pattern.matches("^Outstanding: >> \\d+$", >> >> >> line)); >> >> >> >>>> > line = in.readLine(); >> >> >> >>>> > Assert.assertTrue(Pattern.matches("^Zxid: >> >> 0x[\\da-fA-F]+$", >> >> >> >>>> line)); >> >> >> >>>> > >> >> >> >>>> > >> >> >> >>>> >> >> >> >>> >> >> >> >> >> >>
