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https://issues.apache.org/jira/browse/SOLR-2138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12917581#action_12917581
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Otis Gospodnetic commented on SOLR-2138:
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Identical JVM?
> Solr 1.4 takes long time to load cores (memory leak?)
> -----------------------------------------------------
>
> Key: SOLR-2138
> URL: https://issues.apache.org/jira/browse/SOLR-2138
> Project: Solr
> Issue Type: Bug
> Affects Versions: 1.4
> Environment: 8 processors Intel(R) Xeon(R) CPU E5345 @
> 2.33GHz
> Reporter: Renee Sun
>
> 1. 32 GB total memory, with 16GB allocated to Solr server.
> 2. 130 cores, with most cores having 50,000 documents, and 2,3 cores having
> 1~2.4Million documents (largest core takes about 11GB disk space)
> 3. in solr 1.3, there was no problem, it took 5,6 minutes to load up all
> cores.
> 4. just upgrade to solr 1.4, it takes about 45+ minutes to load all 130 cores.
> 5. no solrconfig or schema change
> 6. autowarmCount="0" for all caches
> I have monitored the memory with JConsole. The 'queryConverter' warning in
> catalina.out file helped me figured out that when about 70 cores were loaded,
> the memory usage went from 300MB to 16GB, and stay at that level. Rest of the
> cores are loaded up extremely slow.
> I find Yonik's fix note for SOLR-1797: fix ConcurrentModificationException
> and potential memory
> leaks in ResourceLoader. (yonik)
> We are in process of upgrading to 1.4.1
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