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Posted to users@solr.apache.org by JaimonGeorge <ja...@gmail.com> on 2021/04/12 14:23:30 UTC

Why the solr replicas are not synching

I have 2 solr (v 8.4.1) and 3 Zookeeper (v3.6.2) running in SolrCloud mode.
After running it for few days I am getting error messages -

2021-04-12 11:04:26.850 ERROR (qtp1632497828-1072) [c:datacore s:shard1
r:core_node4 x:datacore_shard1_replica_n2] o.a.s.u.SolrCmdDistributor
java.io.IOException: Request processing has stalled for 90083ms with 100
remaining elements in the queue.

and

2021-04-12 09:00:36.350 ERROR (qtp1632497828-786) [c:datacore s:shard1
r:core_node4 x:datacore_shard1_replica_n2] o.a.s.s.HttpSolrCall
null:java.io.IOException: Task queue processing has stalled for 90175 ms
with 92 remaining elements to process.

1. What is this mean? How can I resolve this?
2. After this the 2 Solr nodes shows different document count and delete
count. It seems the 2 Solr nodes are not sync.
3. One of the node (not leader) goes to recovering state for ever..

Can u please help.



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