Melina, great to get confirmation that it is indeed possible to create large single table.

I presume the DB6 is hosted on Linux?

May I ask a few questions:
(1) did you create the table from multiple files? If so, what is the average and maximum size of each of these files?
(2) did you try to create the table in one session? (i.e. loop loading all necessary files over several hour for example)
(3) did you use the multi-thread version of bulk load COPY... INTO?
(4) what version of DB and Kernel did you use? Is it compiled in 64bit?
(5) how much memory does the server have?
(6) finally, did you run into any problem in the process?

Many thanks!



On Tue, Mar 24, 2009 at 3:38 AM, <Milena.Ivanova@cwi.nl> wrote:
> Hi, then I'm totally lost.
> That was my last resort in creating a big table.
>
> So:
> (1) I can't create a 600-million table using COPY (because it hangs)
> (2) I can't create two 300-million tables and combined them into one (bug)
>
> Have I missed other ways of doing this?
>
> Just wanted to make sure, the MonetDB can support >600-million-by-10
> records
> in a SINGLE table?

Hi,
In SkyServer DR6 database of 2.5TB MonetDB supports tables longer than
600M rows, although with smaller number of columns.
For instance:
sql>select count(*) from photoprofile;
+-------------+
| count_      |
+=============+
| 13282921742 |
+-------------+
1 tuple
sql>select * from photoprofile limit 1;
+-----+------+---------------+---------------+--------------------+
| bin | band | profmean      | proferr       | objid              |
+=====+======+===============+===============+====================+
|   0 |    0 | 1.49587098e-0 | 6.95472624e-1 | 587722951693303809 |
:     :      : 8             : 0             :                    :
+-----+------+---------------+---------------+--------------------+

where 2 columns are tinyint, 2 - real and 1 -bigint. The table was loaded
by 'copy .. into ..' statement.
Milena

> Thanks.
>
> On Mon, Mar 23, 2009 at 9:14 AM, Niels Nes <Niels.Nes@cwi.nl> wrote:
>
>> On Mon, Mar 23, 2009 at 09:03:09AM -0700, Yue Sheng wrote:
>> >    Tried the whole process. Still the same problem (table_combined
>> >    has the same scheme as table_1):
>> >
>> >    insert into table_combined select * from table_1;
>> >    insert into table_combined select * from table_2;
>> >    select count(*)  from table_combined;
>> >    this gives ONLY the number of records in table_1, but
>> >    table_combined as roughly same size as the other two combined.
>> >    NONE OF THE TABLE HAS ANY INDEXING
>> >    Could someone please confirm if this is a bug? Both table_1 and
>>
>> The way you explain it, it seems a bug.
>>
>>
>> Niels
>> >    table_2 has over 200million rows of data.
>> >
>> >    On Sat, Mar 21, 2009 at 4:47 PM, Yue Sheng
>> >    <[1]yuesheng8@gmail.com> wrote:
>> >
>> >      (1) There's no index or key or anything on the table.
>> >
>> >    (2) The combined table is the size of table_1 + table_2. But
>> >    only table_1 shows up in query
>> >    On Sat, Mar 21, 2009 at 1:51 PM, Lefteris <[2]lsidir@gmail.com>
>> >    wrote:
>> >
>> >      Hi Yue,
>> >      is there any chance that you have set uniqueness in the
>> >      table specs
>> >      and thus not inserting duplicate tuples from table_1 and
>> >      table_2? If
>> >      not, then I would guess that this is a bug and it needs
>> >      further
>> >      investigation.
>> >      lefteris
>> >
>> >    On Sat, Mar 21, 2009 at 3:12 AM, Yue Sheng
>> >    <[3]yuesheng8@gmail.com> wrote:
>> >    > two tables: table_1 and table_2 both have exactly the same
>> >    schema. table_1
>> >    > has 2.15MM rows of data, table_2 has 3.35MM row of data. No
>> >    indexing
>> >    > created a new table: table_combined using same schema as
>> >    table_1
>> >    > insert into table_combined select * from table_1;
>> >    > (30 minutes later)
>> >    > insert into table_combined select * from table_2;
>> >    >
>> >    > (40 minutes later)
>> >    > select count(*) * 1 from table_combined;
>> >    > this give ONLY 2.15MM rows with same rows as table_1
>> >    > What happened to table_2?!?
>> >    > Yes, I've check dfarm size. It equals 2*(table_1 + table_2 )
>> >    > So it's there but "just not seeing it"
>> >    >
>> >    >
>> >    >
>> >    >
>> >    >
>> >
>> >      >
>> >      ------------------------------------------------------------
>> >      ------------------
>> >      > Apps built with the Adobe(R) Flex(R) framework and Flex
>> >      Builder(TM) are
>> >      > powering Web 2.0 with engaging, cross-platform
>> >      capabilities. Quickly and
>> >      > easily build your RIAs with Flex Builder, the
>> >      Eclipse(TM)based development
>> >      > software that enables intelligent coding and step-through
>> >      debugging.
>> >      > Download the free 60 day trial.
>> >      [4]http://p.sf.net/sfu/www-adobe-com
>> >      > _______________________________________________
>> >      > MonetDB-users mailing list
>> >      > [5]MonetDB-users@lists.sourceforge.net
>> >      >
>> >      [6]https://lists.sourceforge.net/lists/listinfo/monetdb-user
>> >      s
>> >      >
>> >      >
>> >      ------------------------------------------------------------
>> >      ------------------
>> >      Apps built with the Adobe(R) Flex(R) framework and Flex
>> >      Builder(TM) are
>> >      powering Web 2.0 with engaging, cross-platform capabilities.
>> >      Quickly and
>> >      easily build your RIAs with Flex Builder, the
>> >      Eclipse(TM)based development
>> >      software that enables intelligent coding and step-through
>> >      debugging.
>> >      Download the free 60 day trial.
>> >      [7]http://p.sf.net/sfu/www-adobe-com
>> >      _______________________________________________
>> >      MonetDB-users mailing list
>> >      [8]MonetDB-users@lists.sourceforge.net
>> >      [9]https://lists.sourceforge.net/lists/listinfo/monetdb-user
>> >      s
>> >
>> > References
>> >
>> >    1. mailto:yuesheng8@gmail.com
>> >    2. mailto:lsidir@gmail.com
>> >    3. mailto:yuesheng8@gmail.com
>> >    4. http://p.sf.net/sfu/www-adobe-com
>> >    5. mailto:MonetDB-users@lists.sourceforge.net
>> >    6. https://lists.sourceforge.net/lists/listinfo/monetdb-users
>> >    7. http://p.sf.net/sfu/www-adobe-com
>> >    8. mailto:MonetDB-users@lists.sourceforge.net
>> >    9. https://lists.sourceforge.net/lists/listinfo/monetdb-users
>>
>> >
>> ------------------------------------------------------------------------------
>> > Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM)
>> are
>> > powering Web 2.0 with engaging, cross-platform capabilities. Quickly
>> and
>> > easily build your RIAs with Flex Builder, the Eclipse(TM)based
>> development
>> > software that enables intelligent coding and step-through debugging.
>> > Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com
>> > _______________________________________________
>> > MonetDB-users mailing list
>> > MonetDB-users@lists.sourceforge.net
>> > https://lists.sourceforge.net/lists/listinfo/monetdb-users
>>
>>
>> --
>> Niels Nes, Centre for Mathematics and Computer Science (CWI)
>> Science Park 123, 1098 XG Amsterdam, The Netherlands
>> room C0.02,  phone ++31 20 592-4098, fax ++31 20 592-4312
>> url: http://www.cwi.nl/~niels   e-mail: Niels.Nes@cwi.nl
>>
>>
>> ------------------------------------------------------------------------------
>> Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are
>> powering Web 2.0 with engaging, cross-platform capabilities. Quickly and
>> easily build your RIAs with Flex Builder, the Eclipse(TM)based
>> development
>> software that enables intelligent coding and step-through debugging.
>> Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com
>> _______________________________________________
>> MonetDB-users mailing list
>> MonetDB-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/monetdb-users
>>
> ------------------------------------------------------------------------------
> Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are
> powering Web 2.0 with engaging, cross-platform capabilities. Quickly and
> easily build your RIAs with Flex Builder, the Eclipse(TM)based development
> software that enables intelligent coding and step-through debugging.
> Download the free 60 day trial.
> http://p.sf.net/sfu/www-adobe-com_______________________________________________
> MonetDB-users mailing list
> MonetDB-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/monetdb-users
>


------------------------------------------------------------------------------
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powering Web 2.0 with engaging, cross-platform capabilities. Quickly and
easily build your RIAs with Flex Builder, the Eclipse(TM)based development
software that enables intelligent coding and step-through debugging.
Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com
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