gmane.text.xml.sedna

Re: Sedna space requirements

Ivan Shcheklein — 2013-05-22T15:13:39

Hi Zdenek,

It's normal behavior. Depending on the structure (number of nodes, number
of levels) of the source XML files this ratio may significantly vary.

Did you load all documents into the same collection? Did you run updates?
What does doc("$schema") return?

Ivan Shcheklein,
Sedna Team


On Wed, May 22, 2013 at 2:48 PM, Sojma, Zdenek
<Zdenek.Sojma-TF0kVB3jB5US+FvcfC7Uqw< at >public.gmane.org>wrote:

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Sedna space requirements

Sojma, Zdenek — 2013-05-22T10:48:13

Hello,

I have a question about memory management. I have performed some space evaluation when I periodically stored one document into a collection (document size was approximately 3MB). When I looked at a statistical information about the document, total size of the document in the database was roughly 1MB, so I suppose that compression was in ratio 3:1. Weird thing was, that size of a *.sedata file raised, while the document was periodically stored into the database, in ratio more than 2:1. When 1000 documents (3GB) were successfully stored, size of the *.sedata file was approximately 7.5GB.

I want to ask you if this is a normal behaviour or if it is possible that I have some wrong settings? Or is there a some way how to decrease these space requirements? I have to admit that this is not so critical issue in these days but it would be nice to know that it can be decreased somehow.

Thank you for your answer.

Best regards,

Zdenek Sojma
Software Application Engineer I - Test Systems
Engineering Test Services

_______________________Honeywell
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Re: Help me please

Ivan Shcheklein — 2013-05-06T09:05:07

Hi,

What exactly have you tried? What version of Sedna and php-api do you use?
What OS do you use? How did you install PHP api? etc ...

Give us some details if you want us to help you.

Regards,
Ivan Shcheklein,
Sedna Team


On Mon, May 6, 2013 at 3:16 AM, iman ghali <imaan.ghaali-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:

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Help me please

iman ghali — 2013-05-05T23:16:53

hello
please i need some help
i am using sedna-php-api-ffa
and there is some missing file
i need "error_codes.h"  file and i couldn't find it ..so i couldn't debug
the program
Can you help me please ?
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Re: Problem using SEDNA ruby client

Олег Борисенко — 2013-04-15T21:51:59

I think you should contact the author of this gem, it's third-party and we
haven't even seen it before. As far as I see, the author left his contacts
in the bottom of the page:
 (Author: Rolf Timmermans (r.timmermans *at* voormedia.com) )

Best regards, Borisenko Oleg, Sedna Team


On Mon, Apr 15, 2013 at 6:59 PM, Matteo Faralli <matteo.faralli-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org>wrote:

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Problem using SEDNA ruby client

Matteo Faralli — 2013-04-15T14:59:13

Hi,
i'm working on WIN7 64bit, i've installed Sedna Ruby Client (
http://sedna.rubyforge.org/) with external c drvier using binary downloaded
from Sedna official site.

I've installed the gem in this way:

% gem install sedna -- --with-sedna-dir=c:/sedna

gem has been installed correctly (no errors found)


now i'm trying on IRB to load the gem doing:

require "sedna"


the result is bad:

irb(main):008:0> require "sedna"
LoadError: 126: The specified module could not be found.   - C:/Ruby193/lib/ruby
/gems/1.9.1/gems/sedna-0.6.0/lib/sedna.so
        from C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:i
n `require'
        from C:/Ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:i
n `require'
        from (irb):8
        from C:/Ruby193/bin/irb:12:in `<main>'

if i open the path location i can find sedna.so file, so i can't
understand the problem.

Coould you help me please?

Thank you,
Matteo
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Is read-only supported by XQJ

Ivan Lagunov — 2013-04-15T10:43:30

Hi Charles,

 

I couldn't find the answer on my own so decided to ask. Does XQJ
implementation allow running read-only transactions on Sedna? I mean this:

http://www.sedna.org/javadoc/ru/ispras/sedna/driver/SednaConnection.html#set
ReadonlyMode(boolean)

http://www.mail-archive.com/sedna-discussion-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f< at >public.gmane.org/msg01364.
html

 

Best regards,

Ivan Lagunov

 

 

 

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Re: Sedna-discussion Digest, Vol 80, Issue 6

Ivan Lagunov — 2013-04-14T12:41:10

Hi Charles,

 

Please take into account the changes below about functions doc-available and
col-available.

 

Best regards,

Ivan Lagunov

 

From: Ivan Shcheklein [mailto:shcheklein-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org] 
Sent: Sunday, April 14, 2013 2:23 PM
To: Jocelyn Raymond; Jose Manuel Sierra Cantero
Cc: sedna-discussion
Subject: Re: [Sedna-discussion] Sedna-discussion Digest, Vol 80, Issue 6

 

Hi,

 

There was an error made I've fixed today. Function is now defined as:

 

doc-available("doc", "col")  (to match doc("doc", "col") signature)

 

*NOT*

 

doc-available("col", "doc")

 

I also added col-availlable() function. Jose, it should help you to
completely avoid doc("$documents").

 

Please, wait until tomorrow's build.

 

Ivan Shcheklein,

Sedna Team

 

 

On Sat, Apr 13, 2013 at 1:17 PM, Ivan Shcheklein <shcheklein-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org>
wrote:

Hi Jocelyn, Jose

 

Release won't be available very soon. For now, you can download and use the
latest development build:

 

http://modis.ispras.ru/FTPContent/sedna/development/

 

It's stable enough to be used in production. Still, I recommend to try it
first on your workload in a sandbox. And (as you always should do) backup
your data. 

 

This version contains fn:doc-available with two arguments. You should use it
instead of doc("$documents") to check if the document is in the specified
collection or not. Note! This function call puts read lock on the
collection. 

 

Note, use se_exp to move data to that build.

 

Ivan Shcheklein,

Sedna Team

 

On Fri, Apr 12, 2013 at 11:48 PM, Jocelyn Raymond <jraymond-yfeSBMgouQgsA/PxXw9srA< at >public.gmane.org>
wrote:

Is it possible to have the fn:doc-available() function made as a new sedna
stable release (e.g. sedna-3.5.162-bin-linux-x64.sh  currently it is:
sedna-3.5.161-bin-linux-x64.sh)?  If so, when can we expect to have it?

Thank you,

Jocelyn Raymond




--

Team Lead

Information Systems

Office of the Registrar

University of Alberta

780.492.3874

 

 





 

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_______________________________________________
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Re: Sedna-discussion Digest, Vol 80, Issue 6

Ivan Shcheklein — 2013-04-14T12:22:55

Hi,

There was an error made I've fixed today. Function is now defined as:

doc-available("doc", "col")  (to match doc("doc", "col") signature)

*NOT*

doc-available("col", "doc")

I also added col-availlable() function. Jose, it should help you to
completely avoid doc("$documents").

Please, wait until tomorrow's build.

Ivan Shcheklein,
Sedna Team



On Sat, Apr 13, 2013 at 1:17 PM, Ivan Shcheklein <shcheklein-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org>wrote:

------------------------------------------------------------------------------
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Re: Deleting big xml files

Ivan Shcheklein — 2013-04-13T09:20:52

Hi Jose,

Check your logs. It seems you still have a lot of doc("$documents") and
doc("$collections") calls.

Ivan


On Mon, Apr 8, 2013 at 6:33 PM, Jose Sierra <jose.sierra-hR4I4Euo7CU5UWNf+nJyDw< at >public.gmane.org>wrote:

------------------------------------------------------------------------------
Precog is a next-generation analytics platform capable of advanced
analytics on semi-structured data. The platform includes APIs for building
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Re: Sedna-discussion Digest, Vol 80, Issue 6

Ivan Shcheklein — 2013-04-13T09:17:35

Hi Jocelyn, Jose

Release won't be available very soon. For now, you can download and use the
latest development build:

http://modis.ispras.ru/FTPContent/sedna/development/

It's stable enough to be used in production. Still, I recommend to try it
first on your workload in a sandbox. And (as you always should do) backup
your data.

This version contains fn:doc-available with two arguments. You should use
it instead of doc("$documents") to check if the document is in the
specified collection or not. Note! This function call puts read lock on the
collection.

Note, use se_exp to move data to that build.

Ivan Shcheklein,
Sedna Team


On Fri, Apr 12, 2013 at 11:48 PM, Jocelyn Raymond <jraymond-yfeSBMgouQgsA/PxXw9srA< at >public.gmane.org>wrote:

------------------------------------------------------------------------------
Precog is a next-generation analytics platform capable of advanced
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Re: How to calculate hash in XQuery

Ivan Shcheklein — 2013-04-12T20:23:15

Done.

Ivan Shcheklein
Sedna Team


On Sat, Apr 13, 2013 at 12:19 AM, Ivan Lagunov <lagivan-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:

------------------------------------------------------------------------------
Precog is a next-generation analytics platform capable of advanced
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Re: How to calculate hash in XQuery

Ivan Lagunov — 2013-04-12T20:19:43

Hi Ivan,

I've created a feature request for this: https://sourceforge.net/p/sedna/bugs/95/

I've put it in Bugs section by accident. Could you move it to Feature requests or shall I create it again there?

Best regards,
Ivan Lagunov

On Apr 12, 2013, at 9:42 PM, Ivan Shcheklein <shcheklein-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:


------------------------------------------------------------------------------
Precog is a next-generation analytics platform capable of advanced
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Re: How to locate XQuery errors

Ivan Lagunov — 2013-04-12T20:17:24

Hi Ivan,

I've created a feature request: https://sourceforge.net/p/sedna/feature-requests/18/

BTW, it's not enough to add this info in debug mode. It'd be much more comfortable to see the function name to speed up investigation of issues on Production system. Also debug mode is not available in XML:DB API.

Best regards,
Ivan Lagunov

On Apr 12, 2013, at 9:47 PM, Ivan Shcheklein <shcheklein-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:


------------------------------------------------------------------------------
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Re: Sedna-discussion Digest, Vol 80, Issue 6

Jocelyn Raymond — 2013-04-12T19:48:08

Is it possible to have the fn:doc-available() function made as a new sedna
stable release (e.g. sedna-3.5.162-bin-linux-x64.sh  currently it is:
sedna-3.5.161-bin-linux-x64.sh)?  If so, when can we expect to have it?
Thank you,
Jocelyn Raymond

--
Team Lead
Information Systems
Office of the Registrar
University of Alberta
780.492.3874
------------------------------------------------------------------------------
Precog is a next-generation analytics platform capable of advanced
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Re: How to locate XQuery errors

Ivan Shcheklein — 2013-04-12T19:47:03

Ilya, Ivan, you can get stack trace
http://sedna.org/progguide/ProgGuidesu10.html#x16-630002.7.2 :)

Unfortunately, it misses function names. Though, it should be easy to add,
I believe.


On Fri, Apr 12, 2013 at 11:43 PM, Ilya Taranov <epsilon-wUdYQqulHFfT9K10yU4tPQ< at >public.gmane.org> wrote:

------------------------------------------------------------------------------
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Re: How to locate XQuery errors

Ilya Taranov — 2013-04-12T19:43:18

Hi,

  That is would be great is we printed an XQuery stack trace, I suppose.
  It's definitely not hard, but we should take a look.

Thanks,
Ilya Taranov.

On Fri, Apr 12, 2013 at 9:10 AM, Ivan Lagunov <lagivan-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:

------------------------------------------------------------------------------
Precog is a next-generation analytics platform capable of advanced
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Re: How to calculate hash in XQuery

Ivan Shcheklein — 2013-04-12T19:42:09

Yes, I think we'll add these functions. It's not very hard.

Ivan Shcheklein,
Sedna Team


On Fri, Apr 12, 2013 at 11:37 PM, Ilya Taranov <epsilon-wUdYQqulHFfT9K10yU4tPQ< at >public.gmane.org> wrote:

------------------------------------------------------------------------------
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Re: How to calculate hash in XQuery

Ilya Taranov — 2013-04-12T19:37:37

Hi,

The easiest (and the only right, in fact) way to do this is to use external
functions:
http://www.sedna.org/progguide/ProgGuidesu5.html#x9-390002.2.5

You may also leave a feature request for internal support. This one
probably may be satisfied in a short time.

Thanks,
Ilya Taranov.

On Fri, Apr 12, 2013 at 10:23 AM, Ivan Lagunov <lagivan-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:

------------------------------------------------------------------------------
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How to calculate hash in XQuery

Ivan Lagunov — 2013-04-12T17:23:00

Hello,

 

Is there a way to calculate hash in XQuery for Sedna? Ideally I'd like to
have something like this module for BaseX:

http://docs.basex.org/wiki/Hashing_Module

 

Best regards,

Ivan Lagunov

------------------------------------------------------------------------------
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How to locate XQuery errors

Ivan Lagunov — 2013-04-12T16:10:21

Hello,

 

We extensively use XQuery modules in Sedna. When an error happens, what we
see is something like this:

 

ERROR 12/04/2013 17:53:48 (TRN nxp pid=32721 sid=45 trid=37)
[PPSeqChecker.cpp:do_next:75]: (XPTY0019) It is a type error if the result
of a step (other than the last step) in a path expression contains an atomic
value. Details: at (45:25), filter step contains atomic in position 1

 

This is a good message showing (row:column) information that helps a lot.
However, it misses the module name that is really uncomfortable. It'd be
really nice to see the module name and preferably the function name if it's
available. Is it something easy to implement?

 

Best regards,

Ivan Lagunov

------------------------------------------------------------------------------
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