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From "Patrick Kimber" <mailing.patrick.kim...@gmail.com>
Subject Re: 答复: About muti-Threads in Lucene
Date Mon, 06 Aug 2007 11:00:39 GMT
Hi Kai

We keep a synchronized map of LuceneIndexAccessor instances, one instance per
Directory.  The map is keyed on the directory path.  We then re-use
the accessor rather than creating a new one each time.

Patrick

On 06/08/07, Kai Hu <kai.hu@dusee.cn> wrote:
> Thanks , Patrick,
>
> It is useful. But I found a problem that I use
>
> "new LuceneIndexAccessor(accessProvider);" when a request comes in B/S,the LuceneIndexAccessor.getWriter()
will lose its sense,it will new an IndexWriter.
>
> public IndexWriter getWriter() throws IOException {
>
>        IndexWriter result;
>
>        synchronized (this) {//here "synchronized" will lose its sense
>
>            checkClosed();
>
>            ...
>
>        if (cachedWriter != null) {
>
>               log.debug("returning cached writer");
>
>               result = cachedWriter;
>
>               writerUseCount++;
>
>            } else {
>
>               log.debug("opening new writer and caching it");
>
>               result = accessProvider.getWriter();// when new a LuceneIndexAccessor Object
,it will new an IndexWriter Object
>
>               cachedWriter = result;
>
>               writerUseCount = 1;
>
>            }
>
>     }
>
> }
>
> It will also throw a Exception "cann't obtain the Lock",should I use a single instance
of LuceneIndexAccessor? Suppose I use a single instance of LuceneIndexAccessor,how to set
a different Directory or Analyzer at one time.
>
>
>
> kai
>
>
> ///////////////////////////////////////////////////////////
>
> ///////////////////////////////////////////////////////////
>
>
>
> >Hi Kai
>
> >
>
> >We use the Lucene Index Accessor contribution:
>
> >
>
> >http://www.nabble.com/Fwd%3A-Contribution%3A-LuceneIndexAccessor-t17416.html#a47049
>
> >
>
> >Patrick
>
>
>
> On 06/08/07, Kai Hu <kai.hu@dusee.cn> wrote:
>
> > Hi,
>
> >
>
> >          How do you solve the problems when add,update,delete documents
>
> > in muti-threads,use synchronized ?
>
> >
>
> >
>
>
>
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>
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>
>
>

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