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https://issues.apache.org/jira/browse/SOLR-1911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12867792#action_12867792
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Yonik Seeley commented on SOLR-1911:
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Going from Feb to May crosses the point when Solr went from Lucene 2.9 to
Lucene 3.0
If there is a fd leak, one place to look would be ref counting in IndexReader
and SolrIndexReader that extends FilterIndexReader. IndexReader is notoriously
hard to wrap (subclass and delegate), and any change in implementation can
make/expose new bugs.
> File descriptor leak while indexing, may cause index corruption
> ---------------------------------------------------------------
>
> Key: SOLR-1911
> URL: https://issues.apache.org/jira/browse/SOLR-1911
> Project: Solr
> Issue Type: Bug
> Components: update
> Affects Versions: 1.5
> Environment: Ubuntu Linux, Java build 1.6.0_16-b01
> Solr Specification Version: 3.0.0.2010.05.12.16.17.46
> Solr Implementation Version: 4.0-dev exported - simon - 2010-05-12
> 16:17:46 -- bult from updated trunk
> Lucene Specification Version: 4.0-dev
> Lucene Implementation Version: 4.0-dev exported - 2010-05-12 16:18:26
> Current Time: Thu May 13 12:21:12 EDT 2010
> Server Start Time:Thu May 13 11:45:41 EDT 2010
> Reporter: Simon Rosenthal
> Priority: Critical
>
> While adding documents to an already existing index using this build, the
> number of open file descriptors increases dramatically until the open file
> per-process limit is reached (1024) , at which point there are error messages
> in the log to that effect. If the server is restarted the index may be corrupt
> commits are handled by autocommit every 60 seconds or 500 documents (usually
> the time limit is reached first).
> mergeFactor is 10.
> It looks as though each time a commit takes place, the number of open files
> (obtained from " lsof -p `cat solr.pid` | egrep ' [0-9]+r ' ") increases by
> 40, There are several open file descriptors associated with each file in the
> index.
> Rerunning the same index updates with an older Solr (built from trunk in Feb
> 2010) doesn't show this problem - the number of open files fluctuates up and
> down as segments are created and merged, but stays basically constant.
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