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From Piyush Kunal <>
Subject Does sharding improve or degrade performance?
Date Mon, 12 Dec 2016 20:14:02 GMT
We did the following change:

1. Previously we had 1 shard and 32 replicas for 1.2million documents of
size 5 GB.
2. We changed it to 4 shards and 8 replicas for 1.2 million documents of
size 5GB

We have a combined RPM of around 20k rpm for solr.

But unfortunately we saw a degrade in performance with RTs going insanely
high when we moved to setup 2.

What could be probable reasons and how it can be fixed?

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