Hi,
As i have mentioned in the first message, I have checked the log and
offset using the Consumer off set checker tool. The Consumer offset just
stalls.
And there is a lag. I haven't specified any fetch size in the consumer
so i guess there is a default size of 1MB. All my messages are less than
that. My Consumer code is not dead because i am continuously monitoring.
I have a doubt, the set up has 12 partitions and there are only 3
consumers. Will that affect fetching time by anyway. I will try to
reduce the number of partitions and check once again.
Thanks for the inputs
thanks
Arjun Narasimha Kota
On Tuesday 25 February 2014 07:42 PM, Neha Narkhede wrote:
Arjun,
Have you looked at
https://cwiki.apache.org/confluence/display/KAFKA/FAQ#FAQ-Myconsumerseemstohavestopped,why
?
Thanks,
Neha
On Tue, Feb 25, 2014 at 5:04 AM, Arjun <ar...@socialtwist.com> wrote:
The thing i found is my ConsumerFetcherThreads are not going beyond
BoundedByteBufferReceive.readFrom. When i added a few more traces in that
function i found that the call is stalling after exceptIncomplete function.
I guess Utils.read is stalling for more than 30 sec, which is the socket
time out time.
Is there anyway i can increase the socket timeout over there. I am not
getting why the consumers are getting stuck over there.
There are no error on the brokers.
Thanks
Arjun Narasimha Kota
On Tuesday 25 February 2014 05:45 PM, Arjun wrote:
Adding to this, i have started my logs in trace mode. I fount that the
Consumer fetcher threads are sending the meta data but are not receiving
any.
I see all the
"TRACE [ConsumerFetcherThread-group1_www.taf-dev.com-1393329622308-6e15dd12-0-1]
[kafka.network.BoundedByteBufferSend] 205 bytes written"
but no reading is taking place. I may be looking at some thing wrong.
Can some one please help me out in this.
Thanks
Arjun Narasimha kota
On Tuesday 25 February 2014 03:46 PM, Arjun wrote:
Apart from that i get this stack trace
25 Feb 2014 15:45:22,636 WARN [ConsumerFetcherThread-group1_
www.taf-dev.com-1393322165136-8318b07d-0-0]
[kafka.consumer.ConsumerFetcherThread]
[ConsumerFetcherThread-group1_www.taf-dev.com-1393322165136-8318b07d-0-0],
Error in fetch Name: FetchRequest; Version: 0; CorrelationId: 32; ClientId:
group1-ConsumerFetcherThread-group1_www.taf-dev.com-1393322165136-8318b07d-0-0;
ReplicaId: -1; MaxWait: 10000000 ms; MinBytes: 1 bytes; RequestInfo:
[taf.referral.emails.service,8] -> PartitionFetchInfo(1702,1048576)
java.net.SocketTimeoutException
at sun.nio.ch.SocketAdaptor$SocketInputStream.read(
SocketAdaptor.java:201)
at sun.nio.ch.ChannelInputStream.read(ChannelInputStream.java:86)
at java.nio.channels.Channels$ReadableByteChannelImpl.read(
Channels.java:221)
at kafka.utils.Utils$.read(Utils.scala:395)
at kafka.network.BoundedByteBufferReceive.readFrom(
BoundedByteBufferReceive.scala:54)
at kafka.network.Receive$class.readCompletely(Transmission.scala:56)
at kafka.network.BoundedByteBufferReceive.readCompletely(
BoundedByteBufferReceive.scala:29)
at kafka.network.BlockingChannel.receive(BlockingChannel.scala:100)
at kafka.consumer.SimpleConsumer.liftedTree1$1(SimpleConsumer.
scala:81)
at kafka.consumer.SimpleConsumer.kafka$consumer$SimpleConsumer$
$sendRequest(SimpleConsumer.scala:71)
at kafka.consumer.SimpleConsumer$$anonfun$fetch$1$$anonfun$
apply$mcV$sp$1.apply$mcV$sp(SimpleConsumer.scala:110)
at kafka.consumer.SimpleConsumer$$anonfun$fetch$1$$anonfun$
apply$mcV$sp$1.apply(SimpleConsumer.scala:110)
at kafka.consumer.SimpleConsumer$$anonfun$fetch$1$$anonfun$
apply$mcV$sp$1.apply(SimpleConsumer.scala:110)
at kafka.metrics.KafkaTimer.time(KafkaTimer.scala:33)
at kafka.consumer.SimpleConsumer$$anonfun$fetch$1.apply$mcV$sp(
SimpleConsumer.scala:109)
at kafka.consumer.SimpleConsumer$$anonfun$fetch$1.apply(
SimpleConsumer.scala:109)
at kafka.consumer.SimpleConsumer$$anonfun$fetch$1.apply(
SimpleConsumer.scala:109)
at kafka.metrics.KafkaTimer.time(KafkaTimer.scala:33)
at kafka.consumer.SimpleConsumer.fetch(SimpleConsumer.scala:108)
at kafka.server.AbstractFetcherThread.processFetchRequest(
AbstractFetcherThread.scala:94)
at kafka.server.AbstractFetcherThread.doWork(
AbstractFetcherThread.scala:86)
at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:51)
Does it effect anything. I havent looked at it as it was just a warning.
Should i be worried about this?
Thanks
Arjun Narasimha kota
On Tuesday 25 February 2014 03:45 PM, Arjun wrote:
Hi,
I am using kafka 0.8. I have 3 brokers on three systems and 3
zookeepers running.
I am using the high level consumer which is in examples folder of
kafka. I am able to push the messages into the queue, but retriving the
messages is taking some time. Is there any way i can tune this.
I get this info in the kafka console, does the consumer slowness
because of this??
Reconnect due to socket error: null
The producer is pushing the messages as i can see that using Consumer
offset checker tool.I can also see there is a lag in the consumer messages
in this.
Thanks
Arjun Narasimha Kota
