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http://issues.apache.org/jira/browse/LUCENE-475?page=comments#action_12359144 ]
Jiri Kuhn commented on LUCENE-475:
----------------------------------
Wouldn't it be nice to have special method to copy two directories? Like:
public abstract class Directory {
...
public static void copyDirectory(Directory from, Directory to) throws
IOException {
// patched code here
}
}
Because I have different problem how to flush RAMDirectory to FSDirectory. The
copy operation is more general to be only in RAMDirectory.
> RAMDirectory(Directory dir, boolean closeDir) constructor uses memory
> inefficiently.
> --------------------------------------------------------------------------------------
>
> Key: LUCENE-475
> URL: http://issues.apache.org/jira/browse/LUCENE-475
> Project: Lucene - Java
> Type: Improvement
> Components: Store
> Reporter: Volodymyr Bychkoviak
> Attachments: RamDirectory.diff, RamDirectory2.diff
>
> recently I found that RAMDirectory(Directory dir, boolean closeDir)
> constructor uses memory inefficiently.
> files from source index are read entirely intro memory as single byte array
> which is after all is thrown away. And if I want to load my 200M optimized,
> compound format index to memory for faster search I should give JVM at least
> 400Mb memory limit. For larger indexes this can be an issue.
> I've attached patch how to solve this problem.
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