Hi Renaud,
thank you for your response.
You asked for some further information:
1. Log messages at the source cluster:
As mentioned in my addendum "CDCR (Solr6.x) does not start (logfile)". I
changed the log level for all Handlers to TRACE and I got three Messages
for each shard caused by "Action LASTPROCESSEDVERSION sent to non-leader
replica .."
For me this looks like the blocker.
2.
Replication should start even if no commit has been sent to the source cluster.
Thanks for the clarification. It helps me to understand.
3.
The empty queue seems to indicate there is an issue, and that cdcr was unable
to instantiate the replicator for the target cluster.
Just to be sure, your source cluster has 4 shards, but not replica ? If it has
replicas, can you ensure that you execute these command on the shard leader.
At the beginning I tried to replicate 4 shards with an replication
factor of 3. Later on i simplified the environment by omitting the
replicas. (replication factor = 1)
Do you think having no replicas could the reason for the log messages above?
Regards
Uwe
Am 05.07.2016 um 14:55 schrieb Renaud Delbru:
Hi Uwe,
At first look, your configuration seems correct,
see my comments below.
On 28/06/16 15:36, Uwe Reh wrote:
9. Start CDCR
http://SOURCE:s_port/solr/scoll/cdcr?action=start&wt=json
{"responseHeader":{"status":0,"QTime":13},"status":["process","started","buffer","enabled"]}
! (not even a single query to the target's zookeeper ??)
Indeed, you should have observed a communication between the source
cluster and the target zookeeper. Do you see any errors in the log of
the source cluster ? Or a log message such as:
"Unable to instantiate the log reader for target collection ..."
10. Enter some test data into the SOURCE
11. Explicit commit in SOURCE
http://SOURCE:s_port/solr/scoll/update?commit=true&opensearcher=true
!! (at least now there should be some traffic, or?)
Replication should start even if no commit has been sent to the source
cluster.
12. Check errors and queues
http://SOURCE:s_port/solr/scoll_shard1_replica1/cdcr?action=queues&wt=json
{"responseHeader":{"status":0,"QTime":0},"queues":[],"tlogTotalSize":135,"tlogTotalCount":1,"updateLogSynchronizer":"stopped"}
http://SOURCE:s_port/solr/scoll_shard1_replica1/cdcr?action=errors&wt=json
{"responseHeader":{"status":0,"QTime":0},"errors":[]}
! Why is the element queues is empty
The empty queue seems to indicate there is an issue, and that cdcr was
unable to instantiate the replicator for the target cluster.
Just to be sure, your source cluster has 4 shards, but not replica ? If
it has replicas, can you ensure that you execute these command on the
shard leader.
Kind Regards
