[LUCENE-2255] IndexWriter.getReader() allocates file handles

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.9.2, 3.0.1, 4.0-ALPHA
• Component/s: core/index

Environment

Ubuntu 9.10, Java 6

• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Mikkel Kamstrup Erlandsen
• Created: 08/Feb/10 19:57
• Updated: 28/Aug/22 12:20
• Resolved: 08/Feb/10 21:20

Description

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.