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From Ash Ramesh <>
Subject Potential bug? maxConnectionsPerHost on requestHandler configuration
Date Tue, 11 Sep 2018 01:54:59 GMT

I tried setting up a bespoke ShardHandlerFactory configuration for each
request handler in solrconfig.xml. However when I stepped through the code
in debug mode (via IntelliJ) I could see that the ShardHandler created and
used in the searcher still didn't reflect the values in solrconfig (even
after a core RELOAD).

I did find that it did reflect changes to the ShardHandlerFactory in
solr.xml when I changed it, pushed to ZK and restarted Solr.

Is this expected or am I going about this the wrong way.

Example RequestHandler syntax:

<requestHandler name="/select" class="solr.SearchHandler" initParams
<!-- Only lookups for id use this request handler -->
<shardHandlerFactory name="shardHandlerFactory"
<int name="socketTimeout">60000</int>
<int name="connTimeout">1000</int>
<int name="maxConnectionsPerHost">99</int>

We are trying to understand why our machines have their CPUs stalling at
60-80% all the time. We suspect it's because of the maxConnections, but ran
into this issue first.

Best Regards,


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