Thank you Mike. This could be documented in Lucene's Directory and stream
classes for others benefit too.

On Tue, May 29, 2012 at 3:54 PM, Michael McCandless <
luc...@mikemccandless.com> wrote:

> Multiple threads are free to interact with Directory.
>
> But it will be only one thread at a time interacting with a single
> instance of IndexInput and IndexOutput.
>
> Mike McCandless
>
> http://blog.mikemccandless.com
>
>
> On Tue, May 29, 2012 at 6:39 PM, Dhruv <dhru...@gmail.com> wrote:
> > I am trying to implement an in-memory version of the Directory,
> IndexInput
> > and IndexOutput classes, similar to RAMDirectory.
> >
> > Can someone please point out if there are any concurrency and thread
> safety
> > requirements from these classes? Do the users of these classes implement
> > client side locking or use thread confinement? Are there any other OS
> level
> > file system guarantees which the Lucene's Directory implementations make
> > use of and which I should ensure from my in-memory implementation?
> >
> > I am using Lucene 3.0.3 and I have looked at RAMDirectory's and
> > RAMIndexInputStream and RAMIndexOutputStream code but it does not
> > explicitly mention any concurrency requirements.
> >
> > Any help in this regard will be appreciated.
> >
> > Thank you,
> > -Dhruv
>
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