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Subject: RE: Snapshot of local data (in sync with DB)
Date: Tue, 28 Oct 2008 13:36:19 -0500
Message-ID: 
 <01E8A990E317A1409EEC9E6858B09B9502416AE1@USDALSMBS02.ad3.ad.alcatel.com>
In-Reply-To: <91f3b2650810200759u37aeb2c6k5957af070b875644@mail.gmail.com>
Thread-Topic: Snapshot of local data (in sync with DB)
Thread-Index: AckyyMUITOBBV+lITxiNrPhUrIRvuwGYiuwA
From: "MARTINEZ Antonio" <Antonio.Martinez@alcatel-lucent.com>
To: <users@jackrabbit.apache.org>

Hello,

I have a follow up question.
Currently we lock the MySql DB before taking backup with FLUSH TABLES =
WITH READ LOCK, which closes all open tables and locks all tables for =
all databases with a read lock until you explicitly release the lock by =
executing UNLOCK TABLES.

Can we guarantee that while we have this lock in the DB, JackRabbit will =
not update the local index files, even if the application tries to save =
something in the repository? If so we could use that lock to safely copy =
as well the local indexing (which would be in sync with the DB)


Thanks,
Antonio
=20

-----Original Message-----
From: Thomas M=FCller [mailto:thomas.mueller@day.com]=20
Sent: Monday, October 20, 2008 8:00 AM
To: users@jackrabbit.apache.org
Subject: Re: Snapshot of local data (in sync with DB)

Hi,

> Do you think I will ALWAYS be able to start JackRabbit using that =
DB+index data (that might not be consistent).

Yes, I believe you will always be able to starting the repository.

> I do not care about having some inconsistent data, my concern is if =
there is a possibility that JackRabbit would not be able to start and =
fix the index.

In many cases, inconsistent data is a problem. Currently, fixing the =
index means re-building the index. If the index is quite small, that's =
not a problem.

Regards,
Thomas