Reuse your IndexSearcher! :)
Also, I think somebody has written some EJB stuff to work with Lucene.
The project is on SF.net.
Otis
--- Terence Lai <[EMAIL PROTECTED]> wrote:
> Hi All,
>
> I am getting a OutOfMemoryError when I deploy my EJB application. To
> debug the problem, I wrote the following test program:
>
> public static void main(String[] args) {
> try {
> Query query = getQuery();
>
> for (int i=0; i<1000; i++) {
> search(query);
>
> if ( i%50 == 0 ) {
> System.out.println("Sleep...");
> Thread.currentThread().sleep(5000);
> System.out.println("Wake up!");
> }
> }
> } catch (Exception e) {
> e.printStackTrace();
> }
> }
>
> private static void search(Query query) throws IOException {
> FSDirectory fsDir = null;
> IndexSearcher is = null;
> Hits hits = null;
>
> try {
> fsDir = FSDirectory.getDirectory("C:\\index, false);
> is = new IndexSearcher(fsDir);
> SortField sortField = new
> SortField("profile_modify_date",
> SortField.STRING, true);
>
> hits = is.search(query, new Sort(sortField));
> } finally {
> if (is != null) {
> try {
> is.close();
> } catch (Exception ex) {
> }
> }
>
> if (fsDir != null) {
> try {
> is.close();
> } catch (Exception ex) {
> }
> }
> }
>
> }
>
> In the test program, I wrote a loop to keep calling the search
> method. Everytime it enters the search method, I would instantiate
> the IndexSearcher. Before I exit the method, I close the
> IndexSearcher and FSDirectory. I also made the Thread sleep for 5
> seconds in every 50 searches. Hopefully, this will give some time for
> the java to do the Garbage Collection. Unfortunately, when I observe
> the memory usage of my process, it keeps increasing until I got the
> java.lang.OutOfMemoryError.
>
> Note that I invoke the IndexSearcher.search(Query query, Sort sort)
> to process the search. If I don't specify the Sort field(i.e. using
> IndexSearcher.search(query)), I don't have this problem, and the
> memory usage keeps at a very static level.
>
> Does anyone experience a similar problem? Did I do something wrong in
> the test program. I throught by closing the IndexSearcher and the
> FSDirectory, the memory will be able to release during the Garbage
> Collection.
>
> Thanks,
> Terence
>
>
>
>
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