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From "Shalin Shekhar Mangar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2927) SolrIndexSearcher's register do not match close and SolrCore's closeSearcher
Date Mon, 03 Nov 2014 21:52:34 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14195169#comment-14195169
] 

Shalin Shekhar Mangar commented on SOLR-2927:
---------------------------------------------

Thanks for pinging me Michael. This issue had been forgotten.

I now understand the bug and I am able to reproduce it locally. I started with Cyrille's patch
which introduced an exception in the SolrCore constructor and I added logging of all items
which are added to JMX and all the items that are removed on close after the exception. With
a little bit of awk and sort, I have this list of mbeans which are leaked:
{code}
documentCache
fieldValueCache
filterCache
mlt
perSegFilter
query
queryResultCache
searcher
Searcher@778e65f2[techproducts]
{code}

> SolrIndexSearcher's register do not match close and SolrCore's closeSearcher
> ----------------------------------------------------------------------------
>
>                 Key: SOLR-2927
>                 URL: https://issues.apache.org/jira/browse/SOLR-2927
>             Project: Solr
>          Issue Type: Bug
>          Components: search
>    Affects Versions: 4.0-ALPHA
>         Environment: JDK1.6/CentOS
>            Reporter: tom liu
>            Assignee: Shalin Shekhar Mangar
>             Fix For: 4.9, Trunk
>
>         Attachments: SOLR-2927.patch, mbean-leak-jira.png
>
>
> # SolrIndexSearcher's register method put the name of searcher, but SolrCore's closeSearcher
method remove name of currentSearcher on infoRegistry.
> # SolrIndexSearcher's register method put the name of cache, but SolrIndexSearcher's
close do not remove the name of cache.
> so, there maybe lost some memory leak.



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