-Re: Shallow iteration and MirrorMaker
Maxime Brugidou 2013-01-23, 17:30
MirrorMaker between two 0.8 clusters.
On Wed, Jan 23, 2013 at 5:54 PM, Neha Narkhede <[EMAIL PROTECTED]>wrote:
> Hi Maxime,
> Do you mean KafkaMigrationTool or MirrorMaker ? Are you trying to mirror
> data between a Kafka 0.7 and Kafka 0.8 cluster ?
> We have fixed the KafkaMigrationTool to always turn off shallow iteration
> since we have to decompress data in 0.7 format before sending it to a 0.8
> On Wed, Jan 23, 2013 at 6:39 AM, Maxime Brugidou
> <[EMAIL PROTECTED]>wrote:
> > Hi all,
> > I am working with MirrorMaker on the 0.8 branch (so I haven't tested this
> > on 0.7 but it looks similar).
> > When I enable shallow.iterator.enable=true on the consumer config, (and
> > disable compression on the producer config, as mentioned in the wiki) the
> > throughput is really good but the data produced is unreadable since the
> > messages are taken "as is" by the producer and i just get a bunch of
> > stored with the ByteBufferMessageSet header and all the info.
> > I tested using the kafka-console-consumer to read my mirrored data and
> > unreadable (unless I pipe the data to gunzip, which manages to read it).
> > Did I miss something? Is there anything i can activate on the producer
> > of MirrorMaker to send the shallow message "as is"? Did anyone manage to
> > make MirrorMaker work with shallow.iterator.enable=true?
> > Thanks for your help,
> > Maxime