thanks junrao.
it can't use assign offset to get the last offset,my mistake.
Thanks，
Lax
> Date: Sun, 24 Aug 2014 21:41:47 -0700
> Subject: Re: read message use SimpleConsumer,can not start with assign offset
> From: jun...@gmail.com
> To: users@kafka.apache.org
>
> If you want to get the latest offset, whichTime should be set to -1.
>
> Thanks,
>
> Jun
>
>
> On Sun, Aug 24, 2014 at 8:16 PM, chenlax <lax...@hotmail.com> wrote:
>
> > yes, it's "return offsets[0]".whichTime is a long num, is message offset i
> > cached,and the kafka keep message 7days.
> >
> > Thanks，
> > Lax
> >
> >
> > > Date: Sun, 24 Aug 2014 19:58:35 -0700
> > > Subject: Re: read message use SimpleConsumer,can not start with assign
> > offset
> > > From: jun...@gmail.com
> > > To: users@kafka.apache.org
> > >
> > > Is line 64 "return offsets[0]"? What value did you pass into whichTime?
> > >
> > > Thanks,
> > >
> > > Jun
> > >
> > >
> > > On Sun, Aug 24, 2014 at 7:24 PM, chenlax <lax...@hotmail.com> wrote:
> > >
> > > > the method getLastOffset as follow:
> > > >
> > > > public static long getLastOffset(SimpleConsumer consumer, String topic,
> > > > int partition,long whichTime, String clientName)
> > > > {
> > > > long l_ret = kafka.api.OffsetRequest.EarliestTime();
> > > > System.out.println("whichTime = " + whichTime);
> > > > TopicAndPartition topicAndPartition = new
> > TopicAndPartition(topic,
> > > > partition);
> > > > Map<TopicAndPartition, PartitionOffsetRequestInfo> requestInfo
> > =
> > > > new HashMap<TopicAndPartition, PartitionOffsetRequestInfo>();
> > > >
> > > > requestInfo.put(topicAndPartition, new
> > > > PartitionOffsetRequestInfo(whichTime, 1));
> > > > kafka.javaapi.OffsetRequest request = new
> > > > kafka.javaapi.OffsetRequest(requestInfo,
> > > > kafka.api.OffsetRequest.CurrentVersion(),clientName);
> > > > OffsetResponse response = consumer.getOffsetsBefore(request);
> > > > if (response.hasError()) {
> > > > System.out.println("Error fetching data Offset Data the
> > > > Broker. Reason: " + response.errorCode(topic, partition) + " | " +
> > > > response.toString() );
> > > > return 0;
> > > > }
> > > > long[] offsets = response.offsets(topic, partition);
> > > > return offsets[0];
> > > > }
> > > >
> > > > Thanks，
> > > > Lax
> > > >
> > > >
> > > > > Date: Fri, 22 Aug 2014 21:27:58 -0700
> > > > > Subject: Re: read message use SimpleConsumer,can not start with
> > assign
> > > > offset
> > > > > From: jun...@gmail.com
> > > > > To: users@kafka.apache.org
> > > > >
> > > > > What's code in line 164 of SimpleConsumerClient.getLastOffset()?
> > > > >
> > > > > Thanks,
> > > > >
> > > > > Jun
> > > > >
> > > > >
> > > > > On Fri, Aug 22, 2014 at 7:36 AM, chenlax <lax...@hotmail.com> wrote:
> > > > >
> > > > > > kafka version is 0.8.0, the code as
> > > > > >
> > > >
> > https://cwiki.apache.org/confluence/display/KAFKA/0.8.0+SimpleConsumer+Example
> > > > > >
> > > > > > when i assign a offset ,it will throw
> > > > > > java.lang.ArrayIndexOutOfBoundsException: 0
> > > > > >
> > > > > > java.lang.ArrayIndexOutOfBoundsException: 0
> > > > > > at
> > > > > >
> > > >
> > com.chen.test.consumer.SimpleConsumerClient.getLastOffset(SimpleConsumerClient.java:164)
> > > > > > at
> > > > > >
> > > >
> > com.chen.test.consumer.SimpleConsumerClient.run(SimpleConsumerClient.java:80)
> > > > > > at
> > > > > >
> > > >
> > com.chen.test.consumer.SimpleConsumerClient.main(SimpleConsumerClient.java:48)
> > > > > > ##EarliestTime : -2 || -1 #### The Start Offset : -2
> > > > > > Error fetching data from the Broker:10.209.22.206 Reason: 1
> > > > > >
> > > > > > how can is get the message which is assign offset?
> > > > > >
> > > > > > Thanks，
> > > > > > Lax
> > > > > >
> > > >
> > > >
> >
> >
