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From Jay Kreps <jay.kr...@gmail.com>
Subject Re: 0.8.0 producer can't connect to cluster?
Date Tue, 27 Nov 2012 18:30:24 GMT
Yeah this was one concern we had in using Yammer--lots of people use it and
we would have to agree on versions. On the other hand everyone really
wanted it. Not sure if they considered this problem.

Joel could answer the question about the bug we were having, but I think it
had to do with capturing csv metrics for performance testing.

Not sure of the best solution to this dilemma. I would love to eventually
get to a point where the client code has no dependencies, but we aren't
there yet.

-Jay


On Tue, Nov 27, 2012 at 10:20 AM, Jason Rosenberg <jbr@squareup.com> wrote:

> What is the yammer bug?
>
> I expect it will be a blocker for me to use the patched yammer, since I
> can't upgrade everything else to use it in our build.
>
> Is it a patch for the 2.x version that's coming?  Or to the as yet
> unreleased 3.x version?
>
> Jason
>
> On Tue, Nov 27, 2012 at 10:17 AM, Jay Kreps <jay.kreps@gmail.com> wrote:
>
> > Yes, we had to patch metrics due to a bug. The patched jar is shipped
> with
> > the distribution until they get a release out.
> >
> > But logging this in debug is a bug. Would you be willing to file a ticket
> > for this?
> >
> > Thanks!
> >
> > -jay
> >
> >
> > On Tue, Nov 27, 2012 at 10:12 AM, Chris Curtin <curtin.chris@gmail.com
> > >wrote:
> >
> > > Okay, figured out that you need to turn on Log4j logger to DEBUG then
> you
> > > get a NoSuchMethodError around yammer. (see below)
> > >
> > > I'm running yammer 2.2.0 since that seems to be all I can find via
> maven.
> > > Is there a different version needed?
> > >
> > > Thanks,
> > >
> > > Chris
> > >
> > > 257  [main] INFO  kafka.producer.SyncProducer  - Connected to
> > > 10.121.31.55:9094 for producing
> > > 286  [main] WARN  kafka.producer.async.DefaultEventHandler  - failed to
> > > send to broker 3 with data Map([test1,0] ->
> > > ByteBufferMessageSet(MessageAndOffset(Message(magic = 2, attributes =
> 0,
> > > crc = 1906312613, key = null, payload = java.nio.HeapByteBuffer[pos=0
> > > lim=22 cap=22]),0), ))
> > > java.lang.NoSuchMethodError:
> com.yammer.metrics.core.TimerContext.stop()J
> > > at kafka.metrics.KafkaTimer.time(KafkaTimer.scala:36)
> > > at kafka.producer.SyncProducer.send(SyncProducer.scala:94)
> > > at
> > >
> > >
> >
> kafka.producer.async.DefaultEventHandler.kafka$producer$async$DefaultEventHandler$$send(DefaultEventHandler.scala:221)
> > > at
> > >
> > >
> >
> kafka.producer.async.DefaultEventHandler$$anonfun$dispatchSerializedData$1.apply(DefaultEventHandler.scala:87)
> > > at
> > >
> > >
> >
> kafka.producer.async.DefaultEventHandler$$anonfun$dispatchSerializedData$1.apply(DefaultEventHandler.scala:81)
> > > at
> > >
> >
> scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:80)
> > > at
> > >
> >
> scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:80)
> > > at scala.collection.Iterator$class.foreach(Iterator.scala:631)
> > > at
> > scala.collection.mutable.HashTable$$anon$1.foreach(HashTable.scala:161)
> > > at
> > >
> >
> scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:194)
> > > at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:39)
> > > at scala.collection.mutable.HashMap.foreach(HashMap.scala:80)
> > > at
> > >
> > >
> >
> kafka.producer.async.DefaultEventHandler.dispatchSerializedData(DefaultEventHandler.scala:81)
> > > at
> > >
> > >
> >
> kafka.producer.async.DefaultEventHandler.handle(DefaultEventHandler.scala:57)
> > > at kafka.producer.Producer.send(Producer.scala:75)
> > > at kafka.javaapi.producer.Producer.send(Producer.scala:32)
> > > at
> > com.silverpop.kafka.playproducer.TestProducer.main(TestProducer.java:40)
> > > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > > at
> > >
> > >
> >
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> > > at
> > >
> > >
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> > > at java.lang.reflect.Method.invoke(Method.java:597)
> > > at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
> > >
> > >
> > > On Tue, Nov 27, 2012 at 12:30 PM, Jun Rao <junrao@gmail.com> wrote:
> > >
> > > > When the producer fails to send in 3 retries, it will log an error.
> > > Before
> > > > that, in the producer, we log the failure of each of the retries in
> > warn
> > > > and it tells you the cause.
> > > >
> > > > Also, did you create the topic first?
> > > >
> > > > Thanks,
> > > >
> > > > Jun
> > > >
> > > > On Tue, Nov 27, 2012 at 8:56 AM, Chris Curtin <
> curtin.chris@gmail.com
> > > > >wrote:
> > > >
> > > > > The error from when it fails is all I get. Nothing on the broker
> side
> > > and
> > > > > no other errors or exceptions on the client.
> > > > >
> > > > > Where should I be looking for the reasons? Is there a callback I
> > should
> > > > be
> > > > > implementing?
> > > > >
> > > > > Thanks,
> > > > >
> > > > > Chris
> > > > >
> > > > >
> > > > > On Tue, Nov 27, 2012 at 11:49 AM, Jun Rao <junrao@gmail.com>
> wrote:
> > > > >
> > > > > > Do you have the exception that caused each retry to fail?
> > > > > >
> > > > > > Thanks,
> > > > > >
> > > > > > Jun
> > > > > >
> > > > > > On Tue, Nov 27, 2012 at 7:17 AM, Chris Curtin <
> > > curtin.chris@gmail.com
> > > > > > >wrote:
> > > > > >
> > > > > > > Hi,
> > > > > > >
> > > > > > > Installed 0.8.0 yesterday, 3 physical machines, 9 brokers
> running
> > > (3
> > > > > per
> > > > > > > machine). 2 topics, with 3 replicas each
> > > > > > >
> > > > > > > the console producer/consumer examples work fine.
> > > > > > >
> > > > > > > When I run my producer logic I get the following error
whether
> on
> > > the
> > > > > > > cluster or in my dev environment:
> > > > > > >
> > > > > > > Exception in thread "main"
> > > kafka.common.FailedToSendMessageException:
> > > > > > > Failed to send messages after 3 tries.
> > > > > > > at
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> kafka.producer.async.DefaultEventHandler.handle(DefaultEventHandler.scala:70)
> > > > > > > at kafka.producer.Producer.send(Producer.scala:75)
> > > > > > > at kafka.javaapi.producer.Producer.send(Producer.scala:32)
> > > > > > > at
> > > > > >
> > > >
> > com.silverpop.kafka.playproducer.TestProducer.main(TestProducer.java:40)
> > > > > > > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
> > > > > > > at
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> > > > > > > at
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> > > > > > > at java.lang.reflect.Method.invoke(Method.java:597)
> > > > > > > at
> > > > com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
> > > > > > >
> > > > > > > Code is pretty basic:
> > > > > > >
> > > > > > > public class TestProducer {
> > > > > > >     public static void main(String[] args) {
> > > > > > >
> > > > > > >         String zookeeper = args[0];
> > > > > > >         long events = Long.parseLong(args[1]);
> > > > > > >         long blocks = Long.parseLong(args[2]);
> > > > > > >
> > > > > > >         Random rnd = new Random();
> > > > > > >
> > > > > > >         Properties props = new Properties();
> > > > > > >         props.put("broker.list", "mongodb03.atlnp1:9092");
> > > > > > >
> > > > > > >
> > > > > > >         props.put("serializer.class",
> > > > > "kafka.serializer.StringEncoder");
> > > > > > >         ProducerConfig config = new ProducerConfig(props);
> > > > > > >         Producer<Integer, String> producer = new
> > Producer<Integer,
> > > > > > > String>(config);
> > > > > > >
> > > > > > >
> > > > > > >         for (long nBlocks = 0; nBlocks < blocks; nBlocks++)
{
> > > > > > >             for (long nEvents = 0; nEvents < events;
> nEvents++) {
> > > > > > >                 long runtime = new Date().getTime();
> > > > > > >                 String msg = runtime + "," + (50 + nBlocks)
+
> > "," +
> > > > > > > nEvents+ "," + rnd.nextInt(1000);
> > > > > > >                 KeyedMessage<Integer, String> data
= new
> > > > > > > KeyedMessage<Integer, String>("test1", msg);
> > > > > > >                 producer.send(data);
> > > > > > >             }
> > > > > > >         }
> > > > > > >
> > > > > > >
> > > > > > >     }
> > > > > > >
> > > > > > > using Zookeeper doesn't matter. Changing broker.list to
include
> > > all 9
> > > > > > > brokers doesn't matter. Changing Producer and KeyedMessage
to
> be
> > > > > <String,
> > > > > > > String> doesn't matter.
> > > > > > >
> > > > > > > Thoughts on what I'm doing wrong?
> > > > > > >
> > > > > > > Thanks,
> > > > > > >
> > > > > > > Chris
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

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