Hi,

I am puzzled by a problem in solr cloud with Tlog replicas and would
appreciate your insights.  Our solr cloud has two shards and each shard
have 5 tlog replicas. When one of the non-leader replica has hardware issue
and become unreachable,  updates to the whole cloud stopped.  We are on
solr 7.6 and use solrj client to send updates only to leaders.  To my
understanding,  with Tlog replica type, the leader only forward update
requests to replicas for transaction log update and each replica
periodically pulls the segment from leader.  When one replica fails to
respond,  why update requests to the cloud are blocked?  Does leader need
to wait for response from each replica to inform client that update is
successful?

Best,
Wei

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