Hello,
I'm trying to understand an awkward issue we're having on our Kafka
production.
We currently have 8 Kafka servers named:
kafka1, kafka2, kafka3 ...
Few weeks ago we migrated all topics present on kafka7 and then have
shutdown it.
The main issue is a performance issue on Kafka5.
Topic migration are very slow.
Today i tried to do a topic migration from kafka2 to kafka5.
The awkward part is that we've kafka7 references like if it's on
replication on this server :
Here are my commands & comments:
- Original state of the topic was :
$ /usr/share/kafka/bin/kafka-topics.sh --zookeeper 172.16.22.1 --describe
--topic AdBidderZoneDealDailyKey
Topic:AdBidderZoneDealDailyKey PartitionCount:1
ReplicationFactor:2 Configs:retention.ms=604800000
Topic: AdBidderZoneDealDailyKey Partition: 0 Leader: 4
Replicas: 4,2 Isr: 4,2
- Then i ran a topic migration :
$ /usr/share/kafka/bin/kafka-reassign-partitions.sh --zookeeper 172.16.22.1
--reassignment-json-file target-zone-deal-daily.json --execute
$ cat target-zone-deal-daily.json
{"version":1,"partitions":[{"topic":"AdBidderZoneDealDailyKey","partition":0,"replicas":[4,5]}]}
- Now i've two issues : the replication is very very slow, and i've kafka7
occurence (but we've shutdown this machine few weeks ago when all topic
were migrated to other servers) :
$ /usr/share/kafka/bin/kafka-topics.sh --zookeeper 172.16.22.1 --describe
--topic AdBidderZoneDealDailyKey
Topic:AdBidderZoneDealDailyKey PartitionCount:1
ReplicationFactor:4 Configs:retention.ms=604800000
Topic: AdBidderZoneDealDailyKey Partition: 0 Leader: 4
Replicas: 4,5,2,*7* Isr: 4,2
Does anyone have an idea on our issue please ?
Regards.
--
Anthony Pastor.
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