open searchers memory leaks

[tom_s <to...@gmail.com>]

hey , 
i have a memory leak in my solr cluster. sometimes searchers aren't closed
after commit, and they slowly consume all the jvm of my solr instances. 
this is similar to a problem to i found  here
<http://lucene.472066.n3.nabble.com/4820-searchers-opened-td3230087.html>  . 
but in my plugins i only use the SolrQueryRequest.getSearcher(), so there is
no obvious reason why the leak will happen.  
i use solr 6.5.1 . 
1) is there an open bug for solr 6.5.1 that might explain this?
2) are there other stuff i might be doing wrong in my code that may cause
leak? 
3) do you have any tips how can i debug it? 
thanks in advance,
tom 




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