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From Eno Thereska <eno.there...@gmail.com>
Subject Re: Kafka-streams process stopped processing messages
Date Sat, 06 May 2017 14:13:00 GMT
Yeah we’ve seen cases when the session timeout might also need increasing. Could you try
upping it to something like 60000ms and let us know how it goes:

>> streamsProps.put(ConsumerConfig.SESSION_TIMEOUT_MS_CONFIG, 60000);


Thanks
Eno

> On May 6, 2017, at 8:35 AM, Shimi Kiviti <shimi.k@gmail.com> wrote:
> 
> Thanks Eno,
> I already set the the recurve buffer size to 1MB
> I will also try producer
> 
> What about session timeout and heart beat timeout? Do you think it should
> be increased?
> 
> Thanks,
> Shimi
> 
> On Sat, 6 May 2017 at 0:21 Eno Thereska <eno.thereska@gmail.com> wrote:
> 
>> Hi Shimi,
>> 
>> I’ve noticed with our benchmarks that on AWS environments with high
>> network latency the network socket buffers often need adjusting. Any chance
>> you could add the following to your streams configuration to change the
>> default socket size bytes to a higher value (at least 1MB) and let us know?
>> 
>> private static final int SOCKET_SIZE_BYTES = 1 * 1024 * 1024; // at least
>> 1MB
>> streamsProps.put(ConsumerConfig.RECEIVE_BUFFER_CONFIG, SOCKET_SIZE_BYTES);
>> streamsProps.put(ProducerConfig.SEND_BUFFER_CONFIG, SOCKET_SIZE_BYTES);
>> 
>> Thanks
>> Eno
>> 
>>> On May 4, 2017, at 3:45 PM, Shimi Kiviti <shimi.k@gmail.com> wrote:
>>> 
>>> Thanks Eno,
>>> 
>>> We still see problems on our side.
>>> when we run kafka-streams 0.10.1.1 eventually the problem goes away but
>>> with 0.10.2.1 it is not.
>>> We see a lot of the rebalancing messages I wrote before
>>> 
>>> on at least 1 kafka-stream nodes we see disconnection messages like the
>>> following. These messages repeat all the time
>>> 
>>> 2017-05-04 14:25:56,063 [StreamThread-1] INFO
>>> o.a.k.c.c.i.AbstractCoordinator: Discovered coordinator
>>> ip-10-0-91-10.ec2.internal:9092 (id: 2147483646 rack: null) for group sa.
>>> 2017-05-04 14:25:56,063 [StreamThread-1] DEBUG o.a.k.c.NetworkClient:
>>> Initiating connection to node 2147483646 at
>> ip-10-0-91-10.ec2.internal:9092.
>>> 2017-05-04 14:25:56,091 [StreamThread-1] INFO
>>> o.a.k.c.c.i.AbstractCoordinator: (Re-)joining group sa
>>> 2017-05-04 14:25:56,093 [StreamThread-1] DEBUG
>>> o.a.k.s.p.i.StreamPartitionAssignor: stream-thread [StreamThread-1] found
>>> [sa-events] topics possibly matching regex
>>> 2017-05-04 14:25:56,096 [StreamThread-1] DEBUG o.a.k.s.p.TopologyBuilder:
>>> stream-thread [StreamThread-1] updating builder with
>>> SubscriptionUpdates{updatedTopicSubscriptions=[sa-events]} topic(s) with
>> po
>>> ssible matching regex subscription(s)
>>> 2017-05-04 14:25:56,096 [StreamThread-1] DEBUG
>>> o.a.k.c.c.i.AbstractCoordinator: Sending JoinGroup ((type:
>>> JoinGroupRequest, groupId=sa, sessionTimeout=10000,
>>> rebalanceTimeout=2147483647, memb
>>> erId=, protocolType=consumer,
>>> 
>> groupProtocols=org.apache.kafka.common.requests.JoinGroupRequest$ProtocolMetadata@2f894d9b
>> ))
>>> to coordinator ip-10-0-91-10.ec2.internal:9092 (id: 2147483646 rack:
>> null)
>>> 2017-05-04 14:25:56,097 [StreamThread-1] DEBUG o.a.k.c.n.Selector:
>> Created
>>> socket with SO_RCVBUF = 1048576, SO_SNDBUF = 131072, SO_TIMEOUT = 0 to
>> node
>>> 2147483646
>>> 2017-05-04 14:25:56,097 [StreamThread-1] DEBUG o.a.k.c.NetworkClient:
>>> Completed connection to node 2147483646.  Fetching API versions.
>>> 2017-05-04 14:25:56,097 [StreamThread-1] DEBUG o.a.k.c.NetworkClient:
>>> Initiating API versions fetch from node 2147483646.
>>> 2017-05-04 14:25:56,104 [StreamThread-1] DEBUG o.a.k.c.NetworkClient:
>>> Recorded API versions for node 2147483646: (Produce(0): 0 to 2 [usable:
>> 2],
>>> Fetch(1): 0 to 3 [usable: 3], Offsets(2): 0 to 1 [usable: 1],
>>> Metadata(3): 0 to 2 [usable: 2], LeaderAndIsr(4): 0 [usable: 0],
>>> StopReplica(5): 0 [usable: 0], UpdateMetadata(6): 0 to 2 [usable: 2],
>>> ControlledShutdown(7): 1 [usable: 1], OffsetCommit(8): 0 to 2 [usable:
>>> 2], OffsetFetch(9): 0 to 1 [usable: 1], GroupCoordinator(10): 0 [usable:
>>> 0], JoinGroup(11): 0 to 1 [usable: 1], Heartbeat(12): 0 [usable: 0],
>>> LeaveGroup(13): 0 [usable: 0], SyncGroup(14): 0 [usable: 0], Desc
>>> ribeGroups(15): 0 [usable: 0], ListGroups(16): 0 [usable: 0],
>>> SaslHandshake(17): 0 [usable: 0], ApiVersions(18): 0 [usable: 0],
>>> CreateTopics(19): 0 [usable: 0], DeleteTopics(20): 0 [usable: 0])
>>> 2017-05-04 14:29:44,800 [kafka-producer-network-thread |
>>> sa-5788b5a5-aadc-4276-916f-1640008c17da-StreamThread-1-producer] DEBUG
>>> o.a.k.c.NetworkClient: Node -2 disconnected.
>>> 2017-05-04 14:29:44,801 [kafka-producer-network-thread |
>>> sa-5788b5a5-aadc-4276-916f-1640008c17da-StreamThread-1-producer] DEBUG
>>> o.a.k.c.NetworkClient: Sending metadata request (type=MetadataR
>>> equest, topics=) to node 1
>>> 2017-05-04 14:29:44,801 [kafka-producer-network-thread |
>>> sa-5788b5a5-aadc-4276-916f-1640008c17da-StreamThread-1-producer] DEBUG
>>> o.a.k.c.NetworkClient: Node -1 disconnected.
>>> 2017-05-04 14:29:44,802 [kafka-producer-network-thread |
>>> sa-5788b5a5-aadc-4276-916f-1640008c17da-StreamThread-1-producer] DEBUG
>>> o.a.k.c.Metadata: Updated cluster metadata version 4 to Cluster
>>> (id = JsVqjH3tS4CIcqpd2jkogA, nodes = [ip-10-0-91-10.ec2.internal:9092
>> (id:
>>> 1 rack: null), ip-10-0-95-250.ec2.internal:9092 (id: 2 rack: null)],
>>> partitions = [])
>>> 2017-05-04 14:30:56,062 [StreamThread-1] DEBUG o.a.k.c.NetworkClient:
>>> Sending metadata request (type=MetadataRequest, topics=<ALL>) to node 2
>>> 2017-05-04 14:30:56,073 [StreamThread-1] DEBUG o.a.k.c.Metadata: Updated
>>> cluster metadata version 7 to Cluster(id = JsVqjH3tS4CIcqpd2jkogA, nodes
>> =
>>> [ip-10-0-95-250.ec2.internal:9092 (id: 2 rack: null), ip-10
>>> -0-91-10.ec2.internal:9092 (id: 1 rack: null)], partitions =
>>> [Partition(topic = sa-events, partition = 0, leader = 1, replicas =
>> [1,2],
>>> isr = [2,1]), Partition(topic = sa-events, partition = 1, lea
>>> der = 2, replicas = [1,2], isr = [2,1]), Partition(topic = sa-events,
>>> partition = 2, leader = 1, replicas = [1,2], isr = [2,1])])
>>> 2017-05-04 14:31:06,085 [StreamThread-1] DEBUG o.a.k.c.NetworkClient:
>>> Disconnecting from node 2147483646 due to request timeout.
>>> 2017-05-04 14:31:06,086 [StreamThread-1] DEBUG
>>> o.a.k.c.c.i.ConsumerNetworkClient: Cancelled JOIN_GROUP request
>>> 
>> {api_key=11,api_version=1,correlation_id=16,client_id=sa-5788b5a5-aadc-4276-916f
>>> -1640008c17da-StreamThread-1-consumer} with correlation id 16 due to node
>>> 2147483646 being disconnected
>>> 2017-05-04 14:31:06,086 [StreamThread-1] INFO
>>> o.a.k.c.c.i.AbstractCoordinator: Marking the coordinator
>>> ip-10-0-91-10.ec2.internal:9092 (id: 2147483646 rack: null) dead for
>> group
>>> sa
>>> 2017-05-04 14:31:06,195 [StreamThread-1] DEBUG
>>> o.a.k.c.c.i.AbstractCoordinator: Sending GroupCoordinator request for
>> group
>>> sa to broker ip-10-0-91-10.ec2.internal:9092 (id: 1 rack: null)
>>> 2017-05-04 14:31:06,196 [StreamThread-1] DEBUG o.a.k.c.NetworkClient:
>>> Sending metadata request (type=MetadataRequest, topics=<ALL>) to node 2
>>> 2017-05-04 14:31:06,200 [StreamThread-1] DEBUG
>>> o.a.k.c.c.i.AbstractCoordinator: Received GroupCoordinator response
>>> ClientResponse(receivedTimeMs=1493908266200, latencyMs=5,
>>> disconnected=false, requestHeader=
>>> 
>> {api_key=10,api_version=0,correlation_id=19,client_id=sa-5788b5a5-aadc-4276-916f-1640008c17da-StreamThread-1-consumer},
>>> responseBody={error_code=0,coordinator={node_id=1,host=ip-10-0-91-10.ec
>>> 2.internal,port=9092}}) for group sa
>>> 
>>> 
>>> On Mon, May 1, 2017 at 4:19 PM, Eno Thereska <eno.thereska@gmail.com>
>> wrote:
>>> 
>>>> Hi Shimi,
>>>> 
>>>> 0.10.2.1 contains a number of fixes that should make the out of box
>>>> experience better, including resiliency under broker failures and better
>>>> exception handling. If you ever get back to it, and if the problem
>> happens
>>>> again, please do send us the logs and we'll happily have a look.
>>>> 
>>>> Thanks
>>>> Eno
>>>>> On 1 May 2017, at 12:05, Shimi Kiviti <shimi.k@gmail.com> wrote:
>>>>> 
>>>>> Hi Eno,
>>>>> I am afraid I played too much with the configuration to make this
>>>>> productive investigation :(
>>>>> 
>>>>> This is a QA environment which includes 2 kafka instances and 3
>> zookeeper
>>>>> instances in AWS. There are only 3 partition for this topic.
>>>>> Kafka broker and kafka-stream are version 0.10.1.1
>>>>> Our kafka-stream app run on docker using kubernetes.
>>>>> I played around with with 1 to 3  kafka-stream processes, but I got the
>>>>> same results. It is too easy to scale with kubernetes :)
>>>>> Since there are only 3 partitions, I didn't start more then 3
>> instances.
>>>>> 
>>>>> I was too quick to upgraded only the kafka-stream app to 0.10.2.1 with
>>>> hope
>>>>> that it will solve the problem, It didn't.
>>>>> The log I sent before are from this version.
>>>>> 
>>>>> I did notice "unknown" offset for the main topic with kafka-stream
>>>> version
>>>>> 0.10.2.1
>>>>> $ ./bin/kafka-consumer-groups.sh   --bootstrap-server localhost:9092
>>>>> --describe --group sa
>>>>> GROUP                          TOPIC                          PARTITION
>>>>> CURRENT-OFFSET  LOG-END-OFFSET  LAG             OWNER
>>>>> sa             sa-events                 0          842199
>>>>> 842199          0
>>>>> sa-4557bf2d-ba79-42a6-aa05-5b4c9013c022-StreamThread-1-consumer_/
>>>> 10.0.10.9
>>>>> sa             sa-events                 1          1078428
>>>>> 1078428         0
>>>>> sa-4557bf2d-ba79-42a6-aa05-5b4c9013c022-StreamThread-1-consumer_/
>>>> 10.0.10.9
>>>>> sa             sa-events                 2          unknown
>>>>> 26093910        unknown
>>>>> sa-4557bf2d-ba79-42a6-aa05-5b4c9013c022-StreamThread-1-consumer_/
>>>> 10.0.10.9
>>>>> 
>>>>> After that I downgraded the kafka-stream app back to version 0.10.1.1
>>>>> After a LONG startup time (more than an hour) where the status of the
>>>> group
>>>>> was rebalancing, all the 3 processes started processing messages again.
>>>>> 
>>>>> This all thing started after we hit a bug in our code (NPE) that
>> crashed
>>>>> the stream processing thread.
>>>>> So now after 4 days, everything is back to normal.
>>>>> This worries me since it can happen again
>>>>> 
>>>>> 
>>>>> On Mon, May 1, 2017 at 11:45 AM, Eno Thereska <eno.thereska@gmail.com>
>>>>> wrote:
>>>>> 
>>>>>> Hi Shimi,
>>>>>> 
>>>>>> Could you provide more info on your setup? How many kafka streams
>>>>>> processes do you have and from how many partitions are they consuming
>>>> from.
>>>>>> If you have more processes than partitions some of the processes
will
>> be
>>>>>> idle and won’t do anything.
>>>>>> 
>>>>>> Eno
>>>>>>> On Apr 30, 2017, at 5:58 PM, Shimi Kiviti <shimi.k@gmail.com>
wrote:
>>>>>>> 
>>>>>>> Hi Everyone,
>>>>>>> 
>>>>>>> I have a problem and I hope one of you can help me figuring it
out.
>>>>>>> One of our kafka-streams processes stopped processing messages
>>>>>>> 
>>>>>>> When I turn on debug log I see lots of these messages:
>>>>>>> 
>>>>>>> 2017-04-30 15:42:20,228 [StreamThread-1] DEBUG o.a.k.c.c.i.Fetcher:
>>>>>> Sending
>>>>>>> fetch for partitions [devlast-changelog-2] to broker ip-x-x-x-x
>>>>>>> .ec2.internal:9092 (id: 1 rack: null)
>>>>>>> 2017-04-30 15:42:20,696 [StreamThread-1] DEBUG o.a.k.c.c.i.Fetcher:
>>>>>>> Ignoring fetched records for devlast-changelog-2 at offset 2962649
>>>> since
>>>>>>> the current position is 2963379
>>>>>>> 
>>>>>>> After a LONG time, the only messages in the log are these:
>>>>>>> 
>>>>>>> 2017-04-30 16:46:33,324 [kafka-coordinator-heartbeat-thread |
sa]
>>>> DEBUG
>>>>>>> o.a.k.c.c.i.AbstractCoordinator: Sending Heartbeat request for
group
>>>> sa
>>>>>> to
>>>>>>> coordinator ip-x-x-x-x.ec2.internal:9092 (id: 2147483646 rack:
null)
>>>>>>> 2017-04-30 16:46:33,425 [kafka-coordinator-heartbeat-thread |
sa]
>>>> DEBUG
>>>>>>> o.a.k.c.c.i.AbstractCoordinator: Received successful Heartbeat
>>>> response
>>>>>> for
>>>>>>> group same
>>>>>>> 
>>>>>>> Any idea?
>>>>>>> 
>>>>>>> Thanks,
>>>>>>> Shimi
>>>>>> 
>>>>>> 
>>>> 
>>>> 
>> 
>> 


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