Looks like you aren't setting the request client-id, and server is crashing
on it. I'm not sure whether server api is expected to work w/o client-id,
but you can probably fix by sending one. Fwiw, kafka-python sends
'kafka-python' unless user specifies something else.
-Dana
On Jan 11, 2016 8:41 AM, <d...@dspeterson.com> wrote:
> I forgot to include some information about this problem. When I sent
> the produce request, the following appeared in server.log:
>
> [2016-01-10 23:03:44,957] ERROR [KafkaApi-3] error when handling
> request Name: ProducerRequest; Version: 0; CorrelationId: 1; ClientId:
> null; RequiredAcks: 1; AckTimeoutMs: 10000 ms; TopicAndPartition:
> [topic_1,3] -> 37 (kafka.server.KafkaApis)
> java.lang.NullPointerException
> at
> org.apache.kafka.common.metrics.JmxReporter.getMBeanName(JmxReporter.java:127)
> at
> org.apache.kafka.common.metrics.JmxReporter.addAttribute(JmxReporter.java:106)
> at
> org.apache.kafka.common.metrics.JmxReporter.metricChange(JmxReporter.java:76)
> at
> org.apache.kafka.common.metrics.Metrics.registerMetric(Metrics.java:288)
> at org.apache.kafka.common.metrics.Sensor.add(Sensor.java:177)
> at org.apache.kafka.common.metrics.Sensor.add(Sensor.java:162)
> at
> kafka.server.ClientQuotaManager.getOrCreateQuotaSensors(ClientQuotaManager.scala:209)
> at
> kafka.server.ClientQuotaManager.recordAndMaybeThrottle(ClientQuotaManager.scala:111)
> at
> kafka.server.KafkaApis.kafka$server$KafkaApis$$sendResponseCallback$2(KafkaApis.scala:353)
> at
> kafka.server.KafkaApis$$anonfun$handleProducerRequest$1.apply(KafkaApis.scala:371)
> at
> kafka.server.KafkaApis$$anonfun$handleProducerRequest$1.apply(KafkaApis.scala:371)
> at
> kafka.server.ReplicaManager.appendMessages(ReplicaManager.scala:348)
> at
> kafka.server.KafkaApis.handleProducerRequest(KafkaApis.scala:366)
> at kafka.server.KafkaApis.handle(KafkaApis.scala:68)
> at
> kafka.server.KafkaRequestHandler.run(KafkaRequestHandler.scala:60)
> at java.lang.Thread.run(Thread.java:745)
>
> Later when I tried sending another produce request I got a somewhat
> similar error:
>
> [2016-01-11 08:15:05,153] ERROR [KafkaApi-3] error when handling
> request Name: ProducerRequest; Version: 0; CorrelationId: 1; ClientId:
> null; RequiredAcks: 1; AckTimeoutMs: 10000 ms; TopicAndPartition:
> [topic_1,3] -> 37 (kafka.server.KafkaApis)
> java.lang.IllegalArgumentException: A metric named 'MetricName
> [name=throttle-time, group=Produce, description=Tracking average
> throttle-time per client, tags={client-id=null}]' already exists, can't
> register another one.
> at
> org.apache.kafka.common.metrics.Metrics.registerMetric(Metrics.java:285)
> at org.apache.kafka.common.metrics.Sensor.add(Sensor.java:177)
> at org.apache.kafka.common.metrics.Sensor.add(Sensor.java:162)
> at
> kafka.server.ClientQuotaManager.getOrCreateQuotaSensors(ClientQuotaManager.scala:209)
> at
> kafka.server.ClientQuotaManager.recordAndMaybeThrottle(ClientQuotaManager.scala:111)
> at
> kafka.server.KafkaApis.kafka$server$KafkaApis$$sendResponseCallback$2(KafkaApis.scala:353)
> at
> kafka.server.KafkaApis$$anonfun$handleProducerRequest$1.apply(KafkaApis.scala:371)
> at
> kafka.server.KafkaApis$$anonfun$handleProducerRequest$1.apply(KafkaApis.scala:371)
> at
> kafka.server.ReplicaManager.appendMessages(ReplicaManager.scala:348)
> at
> kafka.server.KafkaApis.handleProducerRequest(KafkaApis.scala:366)
> at kafka.server.KafkaApis.handle(KafkaApis.scala:68)
> at
> kafka.server.KafkaRequestHandler.run(KafkaRequestHandler.scala:60)
> at java.lang.Thread.run(Thread.java:745)
>
> In both cases I was running kafka-console-consumer.sh to consume
> messages from the topic I was sending to, and the consumer did see the
> message I sent.
>
> Dave
>
>
> -----Original Message-----
> From: d...@dspeterson.com
> Sent: Monday, January 11, 2016 12:32am
> To: users@kafka.apache.org
> Subject: trouble sending produce requests to 0.9.0.0 broker cluster
>
> Hi,
>
> I'm having trouble sending produce requests to a Kafka 0.9.0.0 broker
> cluster consisting of 4 brokers with IDs 0, 1, 2, and 3. All 4
> brokers are running locally on my CentOS 7 development box, listening
> on ports 9092, 9093, 9094, and 9095 respectively. I am running my
> own producer code (Bruce, see https://github.com/ifwe/bruce), which
> works without problems with Kafka 0.8, but has problems with 0.9.0.0.
> When I send a produce request consisting of a single message, I often
> get a response consisting of error ACK -1 (Unknown, unexpected server
> error) although I have also seen other errors such as 6
> (NotLeaderForPartition). During one observed instance of this
> behavior I saw the following:
>
> sent produce request
> --------------------
> - single message set containing a single message
> - topic: "topic_1"
> - partition: 3
> - empty key
> - value: "hello world"
> - API key: 0 (produce request)
> - API version: 0
> - correlation ID: 1
> - empty client ID
> - required ACKs: 1
> - timeout: 10000
> - message magic byte: 0
> - message attributes: 0 (no compression)
> - destination broker ID: 3
>
> received produce response
> -------------------------
> - correlation ID: 1
> - topic: "topic_1"
> - partition: 3
> - error code: -1
>
> I have included tcpdump output for the above request and response
> below. The topic/partition layout is as follows:
>
> $ bin/kafka-topics.sh --describe --zookeeper
> localhost:2181/kafka-0.9.0.0
> Topic:topic_1 PartitionCount:4 ReplicationFactor:2
> Configs:
> Topic: topic_1 Partition: 0 Leader: 0 Replicas: 0,1
> Isr: 0,1
> Topic: topic_1 Partition: 1 Leader: 1 Replicas: 1,2
> Isr: 2,1
> Topic: topic_1 Partition: 2 Leader: 2 Replicas: 2,3
> Isr: 2,3
> Topic: topic_1 Partition: 3 Leader: 3 Replicas: 3,0
> Isr: 0,3
> $
>
> Does anyone have any ideas about what may be causing this behavior?
>
> Additionally, I was using tcpdump to watch communication between
> kafka-console-producer.sh and the broker cluster, and noticed that
> the console producer sends a value of 1 for the API version in its
> produce requests. Is there any documentation describing protocol
> changes between API versions 0 and 1? I looked here:
>
>
> https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol
>
> and didn't see anything about the new API version. Any help is much
> appreciated.
>
> Thanks,
> Dave
>
>
> Produce request...
>
> # tcpdump -i lo -X -s 0 -nn src port 51147
> tcpdump: verbose output suppressed, use -v or -vv for full protocol
> decode
> listening on lo, link-type EN10MB (Ethernet), capture size 65535 bytes
> 23:03:44.947589 IP 127.0.0.1.51147 > 127.0.0.1.9095: Flags [P.], seq
> 2040824198:2040824280, ack 1758705421, win 342, options [nop,nop,TS val
> 71321820 ecr 71222139], length 82
> 0x0000: 4500 0086 4300 4000 4006 f96f 7f00 0001 E...C.@.@..o....
> 0x0010: 7f00 0001 c7cb 2387 79a4 8186 68d3 b70d ......#.y...h...
> 0x0020: 8018 0156 fe7a 0000 0101 080a 0440 48dc ...V.z.......@H.
> 0x0030: 043e c37b 0000 004e 0000 0000 0000 0001 .>.{...N........
> 0x0040: ffff 0001 0000 2710 0000 0001 0007 746f ......'.......to
> 0x0050: 7069 635f 3100 0000 0100 0000 0300 0000 pic_1...........
> 0x0060: 2500 0000 0000 0000 0000 0000 1973 acf7 %............s..
> 0x0070: 7c00 00ff ffff ff00 0000 0b68 656c 6c6f |..........hello
> 0x0080: 2077 6f72 6c64 .world
> 23:03:44.956525 IP 127.0.0.1.51147 > 127.0.0.1.9095: Flags [.], ack
> 40, win 342, options [nop,nop,TS val 71321830 ecr 71321830], length 0
> 0x0000: 4500 0034 4301 4000 4006 f9c0 7f00 0001 E..4C.@.@.......
> 0x0010: 7f00 0001 c7cb 2387 79a4 81d8 68d3 b734 ......#.y...h..4
> 0x0020: 8010 0156 fe28 0000 0101 080a 0440 48e6 ...V.(.......@H.
> 0x0030: 0440 48e6 .@H.
> ^C
> 2 packets captured
> 4 packets received by filter
> 0 packets dropped by kernel
> #
>
> Produce response...
>
> # tcpdump -i lo -X -s 0 -nn dst port 51147
> tcpdump: verbose output suppressed, use -v or -vv for full protocol
> decode
> listening on lo, link-type EN10MB (Ethernet), capture size 65535 bytes
> 23:03:44.947661 IP 127.0.0.1.9095 > 127.0.0.1.51147: Flags [.], ack
> 2040824280, win 32742, options [nop,nop,TS val 71321821 ecr 71321820],
> length 0
> 0x0000: 4500 0034 7476 4000 4006 c84b 7f00 0001 E..4tv@.@..K....
> 0x0010: 7f00 0001 2387 c7cb 68d3 b70d 79a4 81d8 ....#...h...y...
> 0x0020: 8010 7fe6 fe28 0000 0101 080a 0440 48dd .....(.......@H.
> 0x0030: 0440 48dc .@H.
> 23:03:44.956499 IP 127.0.0.1.9095 > 127.0.0.1.51147: Flags [P.], seq
> 0:39, ack 1, win 32742, options [nop,nop,TS val 71321830 ecr 71321820],
> length 39
> 0x0000: 4500 005b 7477 4000 4006 c823 7f00 0001 E..[tw@.@..#....
> 0x0010: 7f00 0001 2387 c7cb 68d3 b70d 79a4 81d8 ....#...h...y...
> 0x0020: 8018 7fe6 fe4f 0000 0101 080a 0440 48e6 .....O.......@H.
> 0x0030: 0440 48dc 0000 0023 0000 0001 0000 0001 .@H....#........
> 0x0040: 0007 746f 7069 635f 3100 0000 0100 0000 ..topic_1.......
> 0x0050: 03ff ffff ffff ffff ffff ff ...........
> ^C
> 2 packets captured
> 4 packets received by filter
> 0 packets dropped by kernel
> #
>
>
>
>
>
