What you saw is not normal. In sync replicas should always be a subset of
assigned replicas. Did that anomaly happen before or after reassigning
partitions? Is that reproducible?
Thanks,
Jun
On Tue, Sep 3, 2013 at 12:16 AM, Pablo Nebrera <
pablonebr...@eneotecnologia.com> wrote:
> Hello
>
> I have a cluster with:
> * three nodes: rb01, rb02 and rb03
> * three topics: rb_event, rb_monitor, rb_flow
> * three partitions per topic
> * replicas 2
>
>
> The current status is:
>
> Topic Partition Leader Replicas In-Sync replicas
>
> -------------------------------------------------------------------------------
> rb_event 0 2 2,1 2,0
> 1 2 1,2 2,0
> 2 2 1,2 2
>
> -------------------------------------------------------------------------------
> rb_flow 0 2 1,2 2,0
> 1 2 2,0 2,0
> 2 0 0,1 0,1
>
> -------------------------------------------------------------------------------
> rb_monitor 0 2 1,2 2
> 1 2 2,1 2,0
> 2 0 0,2 2,0
>
> -------------------------------------------------------------------------------
>
>
> I see something strange. For example:
>
> * rb_event -> partition 0 has replicas 2,1 but In sync replicas are 2,0
> -> that is normal ???
>
> And the worst it when I try to reassign propertly the partitions:
>
> The kafka-reassign-partitions.sh tries to write
> to /admin/reassign_partitions the following:
>
>
> {"partitions":[{"topic":"rb_event","partition":0,"replicas":[0,1]},{"topic":"rb_event","partition":1,"replicas":[1,2]},{"topic":"rb_event","partition":2,"replicas":[2,0]},{"topic":"rb_monitor","partition":0,"replicas":[2,0]},{"topic":"rb_monitor","partition":1,"replicas":[0,1]},{"topic":"rb_monitor","partition":2,"replicas":[1,2]}]}
>
>
> When I access to zookeeper I do see:
> [zk: rb02:2181,rb01:2181,rb03:2181(CONNECTED) 3] get
> /admin/reassign_partitions
> { "partitions":[ { "partition":2, "replicas":[ 1, 2 ], "topic":"rb_monitor"
> }, { "partition":0, "replicas":[ 2, 0 ], "topic":"rb_monitor" }, {
> "partition":1, "replicas":[ 0, 1 ], "topic":"rb_monitor" }, {
> "partition":0, "replicas":[ 0, 1 ], "topic":"rb_event" }, { "partition":2,
> "replicas":[ 2, 0 ], "topic":"rb_event" } ], "version":1 }
>
>
> And keep there for ever
>
> What can I do ?
>
> Thanks
>
>
>
> Pablo
>
