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From Ryan Williams <rwilli...@gmail.com>
Subject Re: LeaderNotAvailableException
Date Tue, 12 Aug 2014 00:08:44 GMT
The broker appears to be running

$ telnet kafka-server 9092
Trying...
Connected to kafka-server
Escape character is '^]'.

I've attached today's server.log.  There was a manual restart of kafka,
which you'll notice, but that didn't fix the issue.

Thanks for looking!








On Mon, Aug 11, 2014 at 4:30 PM, Guozhang Wang <wangguoz@gmail.com> wrote:

> Hi Ryan,
>
> Could you check if all of your brokers are still live and running? Also
> could you check the server log in addition to the producer / state-change /
> controller logs?
>
> Guozhang
>
>
> On Mon, Aug 11, 2014 at 12:45 PM, Ryan Williams <rwilliamz@gmail.com>
> wrote:
>
> > I have a single broker test Kafka instance that was running fine on
> Friday
> > (basically out of the box configuration with 2 partitions), now I come
> back
> > on Monday and producers are unable to send messages.
> >
> > What else can i look at to debug, and prevent?
> >
> > I know how to recover by removing data directories for kafka and
> zookeeper
> > to start fresh.  But, this isn't the first time this has happened, so I
> > would like to understand it better to feel more comfortable with kafka.
> >
> >
> > ===================
> > Producer error (from console produce)
> > ===================
> > [2014-08-11 19:32:49,781] WARN Error while fetching metadata
> > [{TopicMetadata for topic mytopic ->
> > No partition metadata for topic mytopic due to
> > kafka.common.LeaderNotAvailableException}] for topic [mytopic]: class
> > kafka.common.LeaderNotAvailableException
> > (kafka.producer.BrokerPartitionInfo)
> > [2014-08-11 19:32:49,782] ERROR Failed to collate messages by topic,
> > partition due to: Failed to fetch topic metadata for topic: mytopic
> > (kafka.producer.async.DefaultEventHandler)
> >
> > ===============
> > state-change.log
> > ===============
> > [2014-08-11 19:12:45,312] TRACE Controller 0 epoch 3 started leader
> > election for partition [mytopic,0] (state.change.logger)
> > [2014-08-11 19:12:45,321] ERROR Controller 0 epoch 3 initiated state
> change
> > for partition [mytopic,0] from OfflinePartition to OnlinePartition failed
> > (state.change.logger)
> > kafka.common.NoReplicaOnlineException: No replica for partition
> [mytopic,0]
> > is alive. Live brokers are: [Set()], Assigned replicas are: [List(0)]
> >     at
> >
> >
> kafka.controller.OfflinePartitionLeaderSelector.selectLeader(PartitionLeaderSelector.scala:61)
> > [2014-08-11 19:12:45,312] TRACE Controller 0 epoch 3 started leader
> > election for partition [mytopic,1] (state.change.logger)
> > [2014-08-11 19:12:45,321] ERROR Controller 0 epoch 3 initiated state
> change
> > for partition [mytopic,1] from OfflinePartition to OnlinePartition failed
> > (state.change.logger)
> > kafka.common.NoReplicaOnlineException: No replica for partition
> [mytopic,1]
> > is alive. Live brokers are: [Set()], Assigned replicas are: [List(0)]
> >     at
> >
> >
> kafka.controller.OfflinePartitionLeaderSelector.selectLeader(PartitionLeaderSelector.scala:61)
> >
> > ===============
> > controller.log
> > ===============
> > [2014-08-11 19:12:45,308] DEBUG [OfflinePartitionLeaderSelector]: No
> broker
> > in ISR is alive for [mytopic,1]. Pick the leader from the alive assigned
> > replicas:  (kafka.controller.OfflinePartitionLeaderSelector)
> > [2014-08-11 19:12:45,321] DEBUG [OfflinePartitionLeaderSelector]: No
> broker
> > in ISR is alive for [mytopic,0]. Pick the leader from the alive assigned
> > replicas:  (kafka.controller.OfflinePartitionLeaderSelector)
> >
>
>
>
> --
> -- Guozhang
>

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