Please start a new thread for this discussion.
Am 23.06.2014 um 11:02 schrieb Paul Damian <pauldamia...@gmail.com>:
> Hey,
> I'm trying to run a command to find out 10 clients and the companies they
> work for. I've used a query like this:
> match (c: Client)-[WORKS_FOR]->(co: Company) return c, co limit 10
> However, it keeps returning Java heap space error. Neo4j is installed on a vm
> with windows server 2012R2 Intel Xeon @ 2.27 GHz and 8 GB of RAM. The graph
> db has over 30 GB (which is also weird since the SQL database that was used
> to populate the graph only has 13 GB). What can I do to improve the query
> performance beside adding indexes?
>
>
>
> miercuri, 18 iunie 2014, 16:34:10 UTC+3, Michael Hunger a scris:
> For me it sounds as if there is a big cross product happening.
>
> I.e. many Verticals with the same Id
>
> What happens if you do:
>
> MATCH (v:Vertical)
> RETURN v.Id, count(*)
>
> Michael
>
> Am 18.06.2014 um 15:26 schrieb Paul Damian <paulda...@gmail.com>:
>
>> Hi,
>>
>> I've tried with another file, which contains ClientdId and VerticalId. The
>> thing is, there are only 7 verticals and 11M clients, so there is an obvious
>> one-to-many relationship there.
>> When I run
>> LOAD CSV WITH HEADERS FROM "file:/Users/pauld/Documents/Vertical.csv" AS c
>> WITH c LIMIT 100
>> MATCH (cli: Client { Id: toInt(c.ClientId)}), (vert: Vertical { Id:
>> toInt(c.VerticalId)})
>> Return count(*)
>> it return Neo.DatabaseError.Statement.ExecutionFailure
>> I get the same result when I only match the verticals.
>> However, if I run
>> LOAD CSV WITH HEADERS FROM "file:/Users/pauld/Documents/Vertical.csv" AS c
>> WITH c LIMIT 100
>> MATCH (cli: Client { Id: toInt(c.ClientId)})
>> Return count(*)
>> it returns 100.
>> I think it has something to do with the fact that the first 100 verticals
>> have the same Id
>>
>> miercuri, 18 iunie 2014, 14:20:57 UTC+3, Michael Hunger a scris:
>> sorry
>>
>> LOAD CSV WITH HEADERS FROM "file:/Users/pauld/Documents/LOCATED_IN.csv" AS c
>> WITH c
>> LIMIT 100
>> MATCH (client: Client { Id: toInt(c.Id)}), (city: City { Id:
>> toInt(c.CityId)})
>> Return count(*)
>>
>>
>> Am 18.06.2014 um 11:44 schrieb Paul Damian <paulda...@gmail.com>:
>>
>>> I cannot run this command. It returns invalid syntax. Only way I could run
>>> it was
>>>
>>> LOAD CSV WITH HEADERS FROM "file:/Users/pauld/Documents/LOCATED_IN.csv" AS
>>> c
>>> MATCH (client: Client { Id: toInt(c.Id)}), (city: City { Id:
>>> toInt(c.CityId)})
>>> Return count(*) Limit 100
>>>
>>> Also, I think a skype call would be great.
>>>
>>> marți, 17 iunie 2014, 21:36:05 UTC+3, Michael Hunger a scris:
>>> The something is really wrong.
>>>
>>> What happens if you do
>>>
>>>>>>>>
>>>>>>>> LOAD CSV WITH HEADERS FROM
>>>>>>>> "file:/Users/pauld/Documents/LOCATED_IN.csv" AS c
>>> Limit 100
>>>>>>>> MATCH (client: Client { Id: toInt(c.Id)}), (city: City { Id:
>>>>>>>> toInt(c.CityId)})
>>> Return count(*)
>>>
>>> I'm at a conference in Amsterdam this week
>>> but perhaps we can do a skype call next week?
>>>
>>> Michael
>>>
>>>
>>>
>>> Sent from mobile device
>>>
>>> Am 17.06.2014 um 18:48 schrieb Paul Damian <paulda...@gmail.com>:
>>>
>>>> Yes, I do. I keep getting Java heap space error now. I'm using 100 commit
>>>> size.
>>>>
>>>> marți, 17 iunie 2014, 19:28:05 UTC+3, Michael Hunger a scris:
>>>> Ok, cool and you have the indexes for both :City(Id) and :Client(Id) ?
>>>>
>>>>
>>>> Michael
>>>>
>>>> Am 17.06.2014 um 18:15 schrieb Paul Damian <paulda...@gmail.com>:
>>>>
>>>>> The first query returns 999996 which is the number of rows in the file
>>>>> and the second one returns Neo.DatabaseError.Statement.ExecutionFailure
>>>>> probably because of the null values. But then I run the following
>>>>> command:
>>>>> LOAD CSV WITH HEADERS FROM "file:/Users/pauld/Documents/LOCATED_IN.csv"
>>>>> AS c
>>>>> MATCH (city:City { Id: toInt(c.CityId)})
>>>>> WHERE coalesce(c.CityId,"") <> ""
>>>>> RETURN count(*)
>>>>>
>>>>> and I get 992980
>>>>>
>>>>>
>>>>> marți, 17 iunie 2014, 17:55:56 UTC+3, Michael Hunger a scris:
>>>>> No you can just filter out the lines with no cityid
>>>>>
>>>>> Did you run my suggested commands?
>>>>>
>>>>>>>> LOAD CSV WITH HEADERS FROM
>>>>>>>> "file:/Users/pauld/Documents/LOCATED_IN.csv" AS c
>>>>>>>> MATCH (client: Client { Id: toInt(c.Id)})
>>>>>>> RETURN count(*)
>>>>>>>
>>>>>>>> LOAD CSV WITH HEADERS FROM
>>>>>>>> "file:/Users/pauld/Documents/LOCATED_IN.csv" AS c
>>>>>>>> MATCH (city: City { Id: toInt(c.CityId)})
>>>>>>> RETURN count(*)
>>>>>
>>>>>>
>>>>>
>>>>>>>> LOAD CSV WITH HEADERS FROM
>>>>>>>> "file:/Users/pauld/Documents/LOCATED_IN.csv" AS c
>>>>> return c
>>>>> limit 10
>>>>>
>>>>>>>
>>>>>
>>>>> Am 17.06.2014 um 16:37 schrieb Paul Damian <paulda...@gmail.com>:
>>>>>
>>>>>> in the file I only have 2 columns, one for client id, which is always
>>>>>> not null and CityId, which may be sometimes null. Should I export the
>>>>>> records from SQL database leaving out the columns that contain null
>>>>>> values?
>>>>>>
>>>>>> marți, 17 iunie 2014, 15:39:14 UTC+3, Michael Hunger a scris:
>>>>>> if they don't have a value for city id, do they then have empty columns
>>>>>> there still? like "user-id,,
>>>>>>
>>>>>> You probably want to filter these rows?
>>>>>>
>>>>>>>> LOAD CSV WITH HEADERS FROM
>>>>>>>> "file:/Users/pauld/Documents/LOCATED_IN.csv" AS c
>>>>>> WHERE coalesce(c.CitiId,"") <> ""
>>>>>> ...
>>>>>>
>>>>>> Am 17.06.2014 um 11:23 schrieb Paul Damian <paulda...@gmail.com>:
>>>>>>
>>>>>>> Well, the csv file contains some rows that do not have a value for
>>>>>>> CityId, and the rows are unique regarding the clientID. There are 11M
>>>>>>> clients living in 14K Cities. Is there a limit of links/node?
>>>>>>> Now I've created a piece of code that reads from file and creates each
>>>>>>> relationship, but, as you can imagine, it works really slow in this
>>>>>>> scenario.
>>>>>>>
>>>>>>> did you create an index on :Client(Id) and :City(Id)
>>>>>>>
>>>>>>> what happens if you do:
>>>>>>>
>>>>>>>> LOAD CSV WITH HEADERS FROM
>>>>>>>> "file:/Users/pauld/Documents/LOCATED_IN.csv" AS c
>>>>>>>> MATCH (client: Client { Id: toInt(c.Id)})
>>>>>>> RETURN count(*)
>>>>>>>
>>>>>>>> LOAD CSV WITH HEADERS FROM
>>>>>>>> "file:/Users/pauld/Documents/LOCATED_IN.csv" AS c
>>>>>>>> MATCH (city: City { Id: toInt(c.CityId)})
>>>>>>> RETURN count(*)
>>>>>>>
>>>>>>> each count should be equivalent to the # of rows in the file.
>>>>>>>
>>>>>>> Michael
>>>>>>>
>>>>>>> Am 16.06.2014 um 17:47 schrieb Paul Damian <paulda...@gmail.com>:
>>>>>>>
>>>>>>>> Somehow I've managed to load all the nodes and now I'm trying to load
>>>>>>>> the links as well. I read the nodes from csv file and create the
>>>>>>>> relation between them. I run the following command:
>>>>>>>> USING PERIODIC COMMIT 100
>>>>>>>> LOAD CSV WITH HEADERS FROM
>>>>>>>> "file:/Users/pauld/Documents/LOCATED_IN.csv" AS c
>>>>>>>> MATCH (client: Client { Id: toInt(c.Id)}), (city: City { Id:
>>>>>>>> toInt(c.CityId)})
>>>>>>>> CREATE (client)-[r:LOCATED_IN]->(city)
>>>>>>>>
>>>>>>>> Running with a smaller commit size returns this error
>>>>>>>> Neo.DatabaseError.Statement.ExecutionFailure, while increasing the
>>>>>>>> commit size to 10000 throws Neo.DatabaseError.General.UnknownFailure.
>>>>>>>> Can you help me with this?
>>>>>>>>
>>>>>>>>
>>>>>>>> joi, 5 iunie 2014, 12:05:18 UTC+3, Michael Hunger a scris:
>>>>>>>> Perhaps something with field or line terminators?
>>>>>>>>
>>>>>>>> I assume it blows up the field separation.
>>>>>>>>
>>>>>>>> Try to run:
>>>>>>>>
>>>>>>>> LOAD CSV WITH HEADERS FROM "file:/Users/pauld/Documents/Client.csv" AS
>>>>>>>> c
>>>>>>>> RETURN { Id: toInt(c.Id), FirstName: c.FirstName, LastName:
>>>>>>>> c.Lastname, Address: c.Address, ZipCode: toInt(c.ZipCode), Email:
>>>>>>>> c.Email, Phone: c.Phone, Fax: c.Fax, BusinessName: c.BusinessName,
>>>>>>>> URL: c.URL, Latitude: toFloat(c.Latitude), Longitude:
>>>>>>>> toFloat(c.Longitude), AgencyId: toInt(c.AgencyId), RowStatus:
>>>>>>>> toInt(c.RowStatus)} as data, c as line
>>>>>>>> LIMIT 3
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Thu, Jun 5, 2014 at 10:51 AM, Paul Damian <paulda...@gmail.com>
>>>>>>>> wrote:
>>>>>>>> I've tried using the shell and I get the same results: nodes with no
>>>>>>>> properties.
>>>>>>>> I've created the csv file using MsSQL Server Export. Is it relevant?
>>>>>>>>
>>>>>>>> About you curiosity: I figured I would import first the nodes, then
>>>>>>>> the relationships from the connection tables. Am I doing it wrong?
>>>>>>>>
>>>>>>>> Thanks
>>>>>>>>
>>>>>>>> joi, 5 iunie 2014, 09:54:31 UTC+3, Michael Hunger a scris:
>>>>>>>> I'd probably use a commit size in your case of 50k or 100k.
>>>>>>>>
>>>>>>>> Try to use the neo4j-shell and not the web-interface.
>>>>>>>>
>>>>>>>> Connect to neo4j using bin/neo4j-shell
>>>>>>>>
>>>>>>>> Then run your commands ending with a semicolon.
>>>>>>>>
>>>>>>>> Just curious: Your data is imported as one node per row? That's not
>>>>>>>> really a graph structure.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Wed, Jun 4, 2014 at 6:56 PM, Paul Damian <paulda...@gmail.com>
>>>>>>>> wrote:
>>>>>>>> Hi there,
>>>>>>>>
>>>>>>>> I'm experimenting with Neo4j while benchmarking a bunch of NoSQL
>>>>>>>> databases for my graduation paper.
>>>>>>>> I'm using the web interface to populate the database. I've been able
>>>>>>>> to load the smaller tables from my SQL database and LOAD CSV works
>>>>>>>> fine.
>>>>>>>> By small, I mean a few columns (4-5) and some rows (1 million).
>>>>>>>> However, when I try to upload a larger table (15 columns, 12 million
>>>>>>>> rows), it creates the nodes but it doesn't set any properties.
>>>>>>>> I've tried to reduce the number of records (to 100) and also the
>>>>>>>> number of columns( just the Id property ), but no luck so far.
>>>>>>>>
>>>>>>>> The cypher command used is this one
>>>>>>>> USING PERIODIC COMMIT 100
>>>>>>>> LOAD CSV WITH HEADERS FROM "file:/Users/pauld/Documents/Client.csv" AS
>>>>>>>> c
>>>>>>>> CREATE (:Client { Id: toInt(c.Id), FirstName: c.FirstName, LastName:
>>>>>>>> c.Lastname, Address: c.Address, ZipCode: toInt(c.ZipCode), Email:
>>>>>>>> c.Email, Phone: c.Phone, Fax: c.Fax, BusinessName: c.BusinessName,
>>>>>>>> URL: c.URL, Latitude: toFloat(c.Latitude), Longitude:
>>>>>>>> toFloat(c.Longitude), AgencyId: toInt(c.AgencyId), RowStatus:
>>>>>>>> toInt(c.RowStatus)})
>>>>>>>>
>>>>>>>> Any help and indication is welcomed,
>>>>>>>> Paul
>>>>>>>>
>>>>>>>> --
>>>>>>>> You received this message because you are subscribed to the Google
>>>>>>>> Groups "Neo4j" group.
>>>>>>>> To unsubscribe from this group and stop receiving emails from it, send
>>>>>>>> an email to neo4j+un...@googlegroups.com.
>>>>>>>>
>>>>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> You received this message because you are subscribed to the Google
>>>>>>>> Groups "Neo4j" group.
>>>>>>>> To unsubscribe from this group and stop receiving emails from it, send
>>>>>>>> an email to neo4j+un...@googlegroups.com.
>>>>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> You received this message because you are subscribed to the Google
>>>>>>>> Groups "Neo4j" group.
>>>>>>>> To unsubscribe from this group and stop receiving emails from it, send
>>>>>>>> an email to neo4j+un...@googlegroups.com.
>>>>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> You received this message because you are subscribed to the Google
>>>>>>> Groups "Neo4j" group.
>>>>>>> To unsubscribe from this group and stop receiving emails from it, send
>>>>>>> an email to neo4j+un...@googlegroups.com.
>>>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>>
>>>>>>
>>>>>> --
>>>>>> You received this message because you are subscribed to the Google
>>>>>> Groups "Neo4j" group.
>>>>>> To unsubscribe from this group and stop receiving emails from it, send
>>>>>> an email to neo4j+un...@googlegroups.com.
>>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>
>>>>>
>>>>> --
>>>>> You received this message because you are subscribed to the Google Groups
>>>>> "Neo4j" group.
>>>>> To unsubscribe from this group and stop receiving emails from it, send an
>>>>> email to neo4j+un...@googlegroups.com.
>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>
>>>>
>>>> --
>>>> You received this message because you are subscribed to the Google Groups
>>>> "Neo4j" group.
>>>> To unsubscribe from this group and stop receiving emails from it, send an
>>>> email to neo4j+un...@googlegroups.com.
>>>> For more options, visit https://groups.google.com/d/optout.
>>>
>>>
>>> --
>>> You received this message because you are subscribed to the Google Groups
>>> "Neo4j" group.
>>> To unsubscribe from this group and stop receiving emails from it, send an
>>> email to neo4j+un...@googlegroups.com.
>>> For more options, visit https://groups.google.com/d/optout.
>>
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "Neo4j" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to neo4j+un...@googlegroups.com.
>> For more options, visit https://groups.google.com/d/optout.
>
>
> --
> You received this message because you are subscribed to the Google Groups
> "Neo4j" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to neo4j+unsubscr...@googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.
--
You received this message because you are subscribed to the Google Groups
"Neo4j" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to neo4j+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
