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From "Simon Willnauer (JIRA)" <>
Subject [jira] Commented: (LUCENE-2255) IndexWriter.getReader() allocates file handles
Date Mon, 08 Feb 2010 20:43:27 GMT


Simon Willnauer commented on LUCENE-2255:

I see this coming up multiple times, we should document this properly in the javadoc and on
the wiki. Jason, aren't you the NRT specialist here. What keeps you from attaching a patch
for the IW javadoc?


> IndexWriter.getReader() allocates file handles
> ----------------------------------------------
>                 Key: LUCENE-2255
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Index
>         Environment: Ubuntu 9.10, Java 6
>            Reporter: Mikkel Kamstrup Erlandsen
>         Attachments:
> I am not sure if this is a "bug" or really just me not reading the Javadocs right...
> The IR returned by IW.getReader() leaks file handles if you do not close() it, leading
to starvation of the available file handles/process. If it was clear from the docs that this
was a *new* reader and not some reference owned by the writer then this would probably be
ok. But as I read the docs the reader is internally managed by the IW, which at first shot
lead me to believe that I shouldn't close it.
> So perhaps the docs should be amended to clearly state that this is a caller-owns reader
that *must* be closed? Attaching a simple app that illustrates the problem.

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