Hi Folks,I'm working on a little route planning spring based neo4j service
where I initially load up all my data into neo4j and have about a 100 nodes,
however it seems that I am running into heap space issues when running the
Dijkstra Algorithm for any traversals that are relatively far apart
Hi Saikat,
This was a strange one.
Are you sure you only have 100 nodes? That is really tiny, and your title
said "large graph". How many relationships?
I really cant see a way this could run into heap space issues, what does
your heap configuration look like?
1) Batch insertion will not help y
Hello Tobias,Thanks very much for your help, to be clear I want to find the
path that has the least cost, in this case length is the determinator for doing
this. The total number of nodes are roughly around a 100 but not much more. I
am attaching my heap dump,my code for parsing the google ea
Looks like the heap dump file didn't come across in my post, so here's the heap
dump:
java.lang.OutOfMemoryError: Java heap space
at org.neo4j.kernel.impl.util.ArrayMap.put(ArrayMap.java:75)
at
org.neo4j.kernel.impl.nioneo.xa.ReadTransaction.relGetProperties(ReadTransacti
Kanjilal,
unfortunately this is not the heap dump but the OOM-Error.
The *.hprof file is written to the directory from where you started the app.
Please send it directly to Tobias Ivarsson .
Additionally as you provided the code, you might perhaps provide the xml data
as well, so that we can
You can also zip the graph database directory and send it to me or tobias.
Do you run the algorithm just after the insertion of the data or in a separate
run?
Thanks
Michael
Am 30.01.2011 um 16:44 schrieb Saikat Kanjilal:
>
> Looks like the heap dump file didn't come across in my post, so he
I am attaching a tar file containing the db directory as well as the xml file
used to load the initial data. Also since this runs as a webservice the data
is loading first when the app starts up and then the algorithm runs each time a
webservice call is made to calculate the shortest path.
A
Hi Gian,
could you please supply the contents of "messages.log" found in your neo4j
database directory? It seems like the indexing jar files are missing or
fails to load at the time of recovery. The messages.log file can give hints
about the problem.
2011/1/29 Gian Luca Farina Perseu
> Hi to al
Is there much difference between a creating property and creating a child node?
Tim
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hello list, i hope that all are fine,
i have to know the number of relationships in my database,
how i can do,
thanks beforehand.
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Jose,
Please see the FAQ:
http://wiki.neo4j.org/content/FAQ#How_can_I_get_the_total_number_of_nodes_and_relationships_currently_in_Neo4j.3F
((EmbeddedGraphDatabase)graphDb).getConfig().getGraphDbModule().getNodeManager().getNumberOfIdsInUse(Relationship.class);
Cheers
Michael
Am 31.01.2011 um
Another way, if you are using the Neo4j JMX management extensions:
* Open JConsole for the application.
* Go to the MBeans tab
* Open org.neo4j, then the "Primitive count" bean
* The information you are looking for is "NumberOfRelationshipIdsInUse"
This can also be accessed programatically:
((Abst
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