[Xapian-discuss] question about trigger of reopen

[James Aylett]

I'm not sure what you think is wrong with this behavior. The way that Xapian works, you only get DatabaseModifiedError if two flushed modifications have been written to the database since you opened it in the reader. If you need readers to "notice" new or changed documents faster than you're currently seeing, you'll need to have them periodically reopen the database even if they don't get the modified error.

James

On 19 Dec 2012, at 03:20, Xu Chen <chenxu06 at gmail.com> wrote:

> Hi all,
> Currently I'm implementing a retrieval system with multiple reader
> processes and only one writer process updating the database periodically.
> In a reader process, whenever a Xapian::DatabaseModifiedError exception is
> caught, I call function reopen() and retry.
> 
> However, my problem is, when there is only a small set of modification,
> e.g. only one new document is added, the reader would never get the
> DatabaseModifiedError and hence would not call reopen. I am sure that I've
> called commit() in the writer process.
> 
> Could anybody please tell me what's going wrong here?
> 
> Thank you very much.
> *
> Best regards!*
> *Xu Chen*
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-- 
 James Aylett, occasional trouble-maker
 xapian.org