[#LUCENE-753] Use NIO positional read to avoid synchronization in FSIndexInput

Lucene - Java

Use NIO positional read to avoid synchronization in FSIndexInput

Created: 19/Dec/06 06:18 PM Updated: 15/Sep/09 08:32 PM

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Component/s:

Store

Affects Version/s:

None

Fix Version/s:

None

Time Tracking:

Not Specified

File Attachments:

File Name	Date Attached	Attached By	Size
FileReadTest.java	2009-09-15 08:32 PM	Yonik Seeley	8 kB
FileReadTest.java	2008-06-30 11:31 PM	Brian Pinkerton	8 kB
FileReadTest.java	2008-06-30 07:26 PM	Yonik Seeley	8 kB
FileReadTest.java	2008-06-30 05:47 PM	Yonik Seeley	8 kB
FileReadTest.java	2008-06-30 12:25 PM	Michael McCandless	6 kB
FileReadTest.java	2007-12-11 08:10 PM	Yonik Seeley	6 kB
FileReadTest.java	2007-12-10 10:34 PM	Yonik Seeley	5 kB
FileReadTest.java	2006-12-21 10:45 PM	Yonik Seeley	5 kB
FSDirectoryPool.patch	2008-07-17 06:18 PM	Michael McCandless	6 kB
FSIndexInput.patch	2006-12-20 06:01 AM	Yonik Seeley	7 kB
FSIndexInput.patch	2006-12-19 06:37 PM	Yonik Seeley	2 kB
LUCENE-753.patch	2008-08-28 05:53 PM	Michael McCandless	11 kB
LUCENE-753.patch	2008-08-26 02:44 PM	Michael McCandless	10 kB
LUCENE-753.patch	2008-08-25 02:46 PM	Jason Rutherglen	13 kB
LUCENE-753.patch	2008-08-23 01:24 PM	Michael McCandless	10 kB
LUCENE-753.patch	2008-08-22 11:57 AM	Michael McCandless	8 kB
lucene-753.patch	2008-07-02 12:55 PM	Jason Rutherglen	8 kB
lucene-753.patch	2008-06-29 06:22 PM	Jason Rutherglen	9 kB

Lucene Fields:

New

Description

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As suggested by Doug, we could use NIO pread to avoid synchronization on the underlying file.
This could mitigate any MT performance drop caused by reducing the number of files in the index format.

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Repository	Revision	Date	User	Message
ASF	#690539	Sat Aug 30 17:33:06 UTC 2008	mikemccand	LUCENE-753: Add new NIOFSDirectory implementation to use java.nio.* for access the same file concurrently with no locking
				Files Changed
				ADD /lucene/java/trunk/src/java/org/apache/lucene/store/NIOFSDirectory.java MODIFY /lucene/java/trunk/src/java/org/apache/lucene/index/CompoundFileWriter.java MODIFY /lucene/java/trunk/src/test/org/apache/lucene/store/TestBufferedIndexInput.java MODIFY /lucene/java/trunk/CHANGES.txt MODIFY /lucene/java/trunk/src/java/org/apache/lucene/store/BufferedIndexInput.java MODIFY /lucene/java/trunk/src/java/org/apache/lucene/store/FSDirectory.java