Re: [basex-talk] Concurrent Query Execution

-- Jens Erat [phone]: tel:+49-151-56961126 [mail]: mailto:email@jenserat.de [jabber]: xmpp:jabber@jenserat.de [web]: http://www.jenserat.de PGP: 350E D9B6 9ADC 2DED F5F2 8549 CBC2 613C D745 722B Am 10.01.2013 um 19:49 schrieb happy somani happysomani@gmail.com: > Hey Christian, > > I tried out the latest build of BaseX and tried both the values for > the DBLOCKING configuration parameter, but I did not see any change in > the behavior of the program that I had attached earlier. Can you > point me to a sample example that demonstrates the usage of the > DBLOCKING configuration parameter. Or is there something else that I > should be doing so that I am able to update and read data from two > different databases simultaneously? > > Thanks > > On Sat, Jan 5, 2013 at 1:46 AM, Christian Grün > christian.gruen@gmail.com wrote: >> Hi Happy, >> >> I didn’t have time to check out your example (just a warning: we >> received several mail provider warning because of your large >> attachments..), but it may be worth to have a look at our Wiki page on >> transaction management [1], which refers to our current locking >> mechanism (multiple readers, single writer). >> >> However, we (i.e. our team member Jens) has recently been working on a >> more fine granular locking (database-wise), and the documentation is >> supposed to capture that pretty soon. In a nutshell: in the .basex >> configuration file [2], you can switch the DBLOCKING flag to true in >> order to deactivate process locking and turn on database-wise locking. >> If everything works out as planned, the first version of database-wise >> locking will be part of our next release due to XMLPrague. >> >> Christian >> >> [1] http://docs.basex.org/wiki/Transaction_Management >> [2] http://docs.basex.org/wiki/Configuration >> ___________________________ >> >> On Fri, Jan 4, 2013 at 7:04 PM, happy somani happysomani@gmail.com wrote: >>> Hey Guys, >>> >>> I was trying a scenario out today and wanted to see if I could query >>> two different databases in parallel. I tried out using the code >>> attached and found that while one of the program was trying to write >>> data to a database the other program waits for the write to the >>> database to finish before it could read data from a database. I am >>> attaching the code in this email and here are the steps that you would >>> need to take to reproduce this issue. >>> >>> 1. Run the UploadFileTest class. (This class is trying to create a db >>> using a large xml file) >>> 2. Run the GetData class (This class is trying to read from a small >>> database called sam. The sam database is being created in this >>> program). >>> >>> I would appreciate if somebody could help me in setting up this >>> concurrent query execution framework or if I have been doing something >>> in the wrong way. Thanks. >>> >>> -- >>> Regards >>> Happy >>> >>> _______________________________________________ >>> BaseX-Talk mailing list >>> BaseX-Talk@mailman.uni-konstanz.de >>> https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk >>> > > > > -- > Regards > Happy Somani > _______________________________________________ > BaseX-Talk mailing list > BaseX-Talk@mailman.uni-konstanz.de > https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk