let me try that. On Saturday, July 5, 2014 2:15:38 AM UTC+5:45, Michael Hunger wrote: > > I just saw. ... If you have already n > > Then it should be much faster to check outgoing rels by property than a > index lookup. > > Sent from mobile device > > Am 04.07.2014 um 22:25 schrieb ashish jindal <[email protected] > <javascript:>>: > > yes, each thread has its own transaction. > > On Saturday, July 5, 2014 2:08:45 AM UTC+5:45, Michael Hunger wrote: >> >> But tge tx is created per thread? >> >> >> >> Sent from mobile device >> >> Am 04.07.2014 um 22:20 schrieb ashish jindal <[email protected]>: >> >> It is in a single transaction, which is on the outermost layer. >> >> On Saturday, July 5, 2014 2:01:44 AM UTC+5:45, Michael Hunger wrote: >>> >>> What is your transactional scope? >>> >>> Michael >>> >>> Sent from mobile device >>> >>> Am 04.07.2014 um 22:06 schrieb ashish jindal <[email protected]>: >>> >>> Hi Michael, >>> number of rels returned is 10-50 . Yes, i close the hits iterator as >>> soon as its purpose is served. >>> >>> On Saturday, July 5, 2014 1:08:09 AM UTC+5:45, Michael Hunger wrote: >>>> >>>> How many rels are returned from the call? >>>> >>>> Do you close the hits afterwards to release resources? >>>> >>>> Sent from mobile device >>>> >>>> Am 04.07.2014 um 10:51 schrieb ashish jindal <[email protected]>: >>>> >>>> Hi, >>>> I am relatively new to neo4j. I have implemented a traversal algorithm >>>> using neo4j as underlying graph storage. >>>> Graph has about 40K nodes and about 2M edges. >>>> Using 2.1.2 community version of neo4j embedded. It is hosted as >>>> service in tomcat7 with allocated 6Gb of memory on 14.04 Ubuntu. >>>> Following is a piece of code which does numeric index queries. >>>> >>>> *RelationshipIndex numericIndex >>>> = graphDb.index().forRelationships(Constants.RELATIONSHIP_INDEX);* >>>> * public Relationship getRelationship(Node n, int lowerlimit, int >>>> upperlimit) throws Exception {* >>>> >>>> >>>> * long t1 = System.currentTimeMillis();* >>>> * IndexHits<Relationship> hits = >>>> numericIndex.query(QueryContext.numericRange("start_time", lowerlimit, >>>> upperlimit, true, true), n, null);* >>>> * long t2 = System.currentTimeMillis();* >>>> * time_spent_in_numeric_index_queries += t2-t1; // global >>>> variable* >>>> * // do something on hits and return a >>>> relationship from it* >>>> >>>> * }* >>>> for a single threaded traversal time_spent_in_numeric_index_queries ~= >>>> 1 sec. >>>> but if i do multiple traversals ( same traversal ) in parallel , >>>> time_spent_in_numeric_index_queries increases linearly . for 10 calls in >>>> parallel it takes ~= 5 sec. >>>> Also, i am only doing read operations throughout . >>>> I want to know, how does querying work? Does it each query lock the >>>> entire index? >>>> >>>> >>>> Thanks, >>>> Ashish >>>> >>>> >>>> -- >>>> 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 [email protected]. >>>> 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 [email protected]. >>> 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 [email protected]. >> 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 [email protected] <javascript:>. > For more options, visit https://groups.google.com/d/optout. > >
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