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From jchen2000 <>
Subject Perf. difference when the solr core is 'current' or not 'current'
Date Mon, 01 Jul 2013 19:21:12 GMT
in Solr's admin statistics page, there is a 'current' flag indicating whether
the core index reader is 'current' or not. According to some discussions in
this mailing list a few months back, it wouldn't affect anything. But my
observation is completely different. When the current flag was not checked
for some of the cores ( I have defined 15 cores in total), my median search
latency over 48M records was over 190ms, but if every current flag was
checked, the median dropped to only 87 ms. 

Another observation is, restarting solr instance may not necessarily make
'current' flags  checked,  have to reload cores even after starting solr.

Could anybody explain the difference? I am using Datastax Enterprise 3.0.2


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