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From svante karlsson <s...@csi.se>
Subject mirrormaker tool in 0.82beta
Date Mon, 05 Jan 2015 23:49:26 GMT
I'm using 0.82beta and I'm trying to push data with the mirrormaker tool
from several remote sites to two datacenters. I'm testing this from a node
containing zk, broker and mirrormaker and the data is pushed to a "normal"
cluster. 3 zk and 4 brokers with replication.

While the configuration seems straight forward things are a bit shaky.

First, if something goes wrong on either consumer or producer side it stops
transmitting data without dying which makes it harder to run under a
supervisor (upstart in my case)

I start pushing data to site 02 and mirrormaker pushes it to my datacenter
- so far all good...

But, when I run. (on my remote site)
kafka-consumer-offset-checker.sh
--group mirrormaker.from.site_02.to.site_ktv --zookeeper 192.168.0.106

Could not fetch offset for [saka.test.ext_datastream,7] due to
kafka.common.NotCoordinatorForConsumerException.
Could not fetch offset for [saka.test.ext_datastream,4] due to
kafka.common.NotCoordinatorForConsumerException.
Could not fetch offset for [saka.test.ext_datastream,2] due to
kafka.common.NotCoordinatorForConsumerException.
Could not fetch offset for [saka.test.ext_datastream,5] due to
kafka.common.NotCoordinatorForConsumerException.
Could not fetch offset for [saka.test.ext_datastream,6] due to
kafka.common.NotCoordinatorForConsumerException.
Could not fetch offset for [saka.test.ext_datastream,3] due to
kafka.common.NotCoordinatorForConsumerException.
Could not fetch offset for [saka.test.ext_datastream,1] due to
kafka.common.NotCoordinatorForConsumerException.
Could not fetch offset for [saka.test.ext_datastream,0] due to
kafka.common.NotCoordinatorForConsumerException.

Group           Topic                          Pid Offset          logSize
        Lag             Owner
mirrormaker.from.site_02.to.site_ktv saka.test.ext_datastream       0
unknown         9310560         unknown
mirrormaker.from.site_02.to.site_ktv_kafka-4-1420497015616-725cd1b5-0
mirrormaker.from.site_02.to.site_ktv saka.test.ext_datastream       1
unknown         9313497         unknown
mirrormaker.from.site_02.to.site_ktv_kafka-4-1420497015616-725cd1b5-0
mirrormaker.from.site_02.to.site_ktv saka.test.ext_datastream       2
unknown         9323623         unknown
mirrormaker.from.site_02.to.site_ktv_kafka-4-1420497015616-725cd1b5-0
mirrormaker.from.site_02.to.site_ktv saka.test.ext_datastream       3
unknown         9334005         unknown
mirrormaker.from.site_02.to.site_ktv_kafka-4-1420497015616-725cd1b5-0
mirrormaker.from.site_02.to.site_ktv saka.test.ext_datastream       4
unknown         9324176         unknown
mirrormaker.from.site_02.to.site_ktv_kafka-4-1420497015616-725cd1b5-0
mirrormaker.from.site_02.to.site_ktv saka.test.ext_datastream       5
unknown         9336504         unknown
mirrormaker.from.site_02.to.site_ktv_kafka-4-1420497015616-725cd1b5-0
mirrormaker.from.site_02.to.site_ktv saka.test.ext_datastream       6
unknown         9316139         unknown
mirrormaker.from.site_02.to.site_ktv_kafka-4-1420497015616-725cd1b5-0
mirrormaker.from.site_02.to.site_ktv saka.test.ext_datastream       7
unknown         9318770         unknown
mirrormaker.from.site_02.to.site_ktv_kafka-4-1420497015616-725cd1b5-0


Since I can push data between my sites something is working but what can be
the case for NotCoordinatorForConsumerException on a single node cluster?


Finally the __consumer_offsets topic should probably be masked out from
mirroring without using whitelists or blacklists


thanks
/svante

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