Hi, Jun

The getOffsetBefore API only return the offset array, i can't find anywhere
to get the error code.

Thanks.

On Sat, Dec 13, 2014 at 1:02 AM, Jun Rao <j...@confluent.io> wrote:
>
> Yes, for regular consumers, we always return the high watermark as the
> latest offset. Did you check the error code in the getOffsetBefore request?
>
> Thanks,
>
> Jun
>
> On Tue, Dec 9, 2014 at 12:31 AM, 向河林 <xian...@mediav.com> wrote:
>
> > Thanks Guozhang,
> >
> > I checked the server log, and I am 90% sure that no leader movement
> > happened at that moment.
> >
> > Could it be that the data was in the memory but yet not flushed to the
> > disk?
> > I read the doc in the wiki
> > https://cwiki.apache.org/confluence/display/KAFKA/Kafka+Replication,
> > and said
> >
> > The high watermark (HW) is the offset of the last committed message.
> > Each log is periodically synced to disks. Data before the flushed
> > offset is guaranteed to be persisted on disks. As we will see, the
> > flush offset can be before or after HW.
> >
> > since the https://issues.apache.org/jira/browse/KAFKA-501 said
> >
> >  For regular consumers, getOffset should return highWatermark as the
> > latest offset.
> >
> > Thanks again.
> > ​
> >
> > On Tue, Dec 9, 2014 at 5:28 AM, Guozhang Wang <wangg...@gmail.com>
> wrote:
> >
> > > Helin,
> > >
> > > Is there a leader movement just before the get latest offset call? If
> > your
> > > follower is not synced and it then becomes the leader due to some
> reason,
> > > it will not have the complete partition data.
> > >
> > > Guozhang
> > >
> > > On Mon, Dec 8, 2014 at 3:02 AM, Helin Xiang <xkee...@gmail.com> wrote:
> > >
> > > > 1 additional information we found in the kafka’s application log
> since
> > > the
> > > > MAGIC time:
> > > >
> > > > 2014-12-04 09:59:36,726 [kafka-scheduler-2] INFO
> > > > kafka.cluster.Partition  - Partition [a.s.3,26] on broker 5:
> Shrinking
> > > > ISR for partition [a.s.3,26] from 5,4 to 5
> > > > 2014-12-04 09:59:36,728 [kafka-scheduler-2] ERROR
> kafka.utils.ZkUtils$
> > > >  - Conditional update of path
> > > > /brokers/topics/a.s.3/partitions/26/state with data
> > > >
> > {"controller_epoch":2,"leader":5,"version":1,"leader_epoch":4,"isr":[5]}
> > > > and expected version 675 failed due to
> > > > org.apache.zookeeper.KeeperException$BadVersionException:
> > > > KeeperErrorCode = BadVersion for
> > > > /brokers/topics/a.s.3/partitions/26/state
> > > >
> > > > ​
> > > >
> > > > On Mon, Dec 8, 2014 at 6:59 PM, Helin Xiang <xkee...@gmail.com>
> wrote:
> > > >
> > > > > Hi,
> > > > >
> > > > > We have currently upgraded our kafka cluster from 0.7.2 to 0.8.1.1.
> > > > >
> > > > > In one of our application, we want to get all partitions' latest
> > > offsets,
> > > > > so we use getoffsetbefore java API (latest).
> > > > >
> > > > > We believe at some time, 1 of the partition's latest offset we got
> is
> > > > much
> > > > > smaller than its real latest offset,(we saw in the application's
> log
> > > that
> > > > > the partition's offset is much smaller than other partitions').
> Since
> > > the
> > > > > real data file of that partition was already deleted, we cannot
> prove
> > > our
> > > > > guess, but we found some clue in the kafka's application log which
> > > helps
> > > > us
> > > > > to conclude that the partition's latest offset at that moment did
> > have
> > > a
> > > > > much larger number.
> > > > >
> > > > > some additional useful information: the partition have 1 additional
> > > > > replica(follower), and at that time, it was not synced with the
> > leader
> > > > > partition(far away behind the leader).
> > > > >
> > > > > Does any one have the same issue? In what condition could lead to
> > this
> > > > > situation?
> > > > >
> > > > > Thanks.
> > > > >
> > > > > --
> > > > >
> > > > >
> > > > > *Best Regards向河林*
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > >
> > > >
> > > > *Best Regards向河林*
> > > >
> > >
> > >
> > >
> > > --
> > > -- Guozhang
> > >
> >
> >
> >
> > --
> >
> > *向河林*
> >
> >
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> >
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