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Date: Wed, 8 Feb 2012 20:48:57 +0800
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 <CA+huq0A7MBE8pnPs6-hkZ-cVUk1LpK+GF7odMWHudnwhGn5vXQ@mail.gmail.com>
Subject: Re: NRTManager and AlreadyClosedException
From: Cheng <zhoucheng2008@gmail.com>
To: java-user@lucene.apache.org
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I use it exactly the same way. So there must be other reason causing the
problem.

On Wed, Feb 8, 2012 at 8:21 PM, Ian Lea <ian.lea@gmail.com> wrote:

> Releasing a searcher is not the same as closing the searcher manager,
> if that is what you mean.
>
> The searcher should indeed be released, but once only for each
> acquire().  Your searching threads should have code like that shown in
> the SearcherManager javadocs.
>
> IndexSearcher s = manager.acquire();
>  try {
>   // Do searching, doc retrieval, etc. with s
>  } finally {
>   manager.release(s);
>  }
>  // Do not use s after this!
>  s = null;
>
> --
> Ian.
>
>
> On Wed, Feb 8, 2012 at 12:09 PM, Cheng <zhoucheng2008@gmail.com> wrote:
> > You are right. There is a method by which I do searching. At the end of
> the
> > method, I release the index searcher (not the searchermanager).
> >
> > Since this method is called by multiple threads. So I think the index
> > searcher will be released multiple times.
> >
> > First, I wonder if releasing searcher is same as releasing the searcher
> > manager.
> >
> > Second, as said in Mike's blog, the searcher should be released, which
> has
> > seemingly caused the problem. What are my alternatives here to avoid it?
> >
> > Thanks
> >
> >
> >
> > On Wed, Feb 8, 2012 at 7:51 PM, Ian Lea <ian.lea@gmail.com> wrote:
> >
> >> Are you closing the SearcherManager?  Calling release() multiple times?
> >>
> >> From the exception message the first sounds most likely.
> >>
> >>
> >> --
> >> Ian.
> >>
> >>
> >> On Wed, Feb 8, 2012 at 5:20 AM, Cheng <zhoucheng2008@gmail.com> wrote:
> >> > Hi,
> >> >
> >> > I am using NRTManager and NRTManagerReopenThread. Though I don't close
> >> > either writer or the reopen thread, I receive AlreadyClosedException
> as
> >> > follow.
> >> >
> >> > My initiating NRTManager and NRTManagerReopenThread are:
> >> >
> >> > FSDirectory indexDir = new NIOFSDirectory(new File(
> >> > indexFolder));
> >> >
> >> > IndexWriterConfig iwConfig = new IndexWriterConfig(
> >> > version, new LimitTokenCountAnalyzer(
> >> > StandardAnalyzer, maxTokenNum));
> >> >
> >> > iw = new IndexWriter(indexDir, iwConfig);
> >> >
> >> > nrtm = new NRTManager(iw, null);
> >> >
> >> > ropt = new NRTManagerReopenThread(nrtm,
> >> > targetMaxStaleSec,
> >> > targetMinStaleSec);
> >> >
> >> > ropt.setName("Reopen Thread");
> >> > ropt.setPriority(Math.min(Thread.currentThread().getPriority() + 2,
> >> > Thread.MAX_PRIORITY));
> >> > ropt.setDaemon(true);
> >> > ropt.start();
> >> >
> >> >
> >> > Where may the searchermanager fall out?
> >> >
> >> >
> >> >
> >> > org.apache.lucene.store.AlreadyClosedException: this SearcherManager
> is
> >> > closed77
> >> > at
> >> >
> >>
> org.apache.lucene.search.SearcherManager.acquire(SearcherManager.java:235)
> >> > at
> >> com.yyt.core.er.lucene.YYTLuceneImpl.codeIndexed(YYTLuceneImpl.java:138)
> >> > at com.yyt.core.er.main.copy.SingleCodeER.run(SingleCodeER.java:50)
> >> > at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
> >> > at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
> >>
> >> ---------------------------------------------------------------------
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> >>
> >>
>
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