[jira] Commented: (SOLR-1808) When IndexReader.reopen is called, old reader is not properly closed

["Mark Miller (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-1808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12841844#action_12841844 ] 

Mark Miller commented on SOLR-1808:
-----------------------------------

Right - thats how its supposed to work - we don't close the old instance because it can still be serving requests on a previous SolrIndexSearcher - it will be closed when that Searcher is closed.

> When IndexReader.reopen is called, old reader is not properly closed
> --------------------------------------------------------------------
>
>                 Key: SOLR-1808
>                 URL: https://issues.apache.org/jira/browse/SOLR-1808
>             Project: Solr
>          Issue Type: Bug
>          Components: search
>    Affects Versions: 1.4
>            Reporter: John Wang
>
> According to Lucene documentation:
> "If the index has not changed since this instance was (re)opened, then this call is a NOOP and returns this instance. Otherwise, a new instance is returned. The old instance is not closed and remains usable."
> In SolrCore.java:
> if (newestSearcher != null && solrConfig.reopenReaders
>           && indexDirFile.equals(newIndexDirFile)) {
>         IndexReader currentReader = newestSearcher.get().getReader();
>         IndexReader newReader = currentReader.reopen();
>         if (newReader == currentReader) {
>           currentReader.incRef();
>         }
>         tmp = new SolrIndexSearcher(this, schema, "main", newReader, true, true);
>       }
> When currentReader!=newReader, currentReader seems to be leaking.

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