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Query Optimisation
Hi Vinayak, What happens with a single clause, so without the union: g.V().has('property1', 'vertex3').outE().has('property1', 'edge3').inV().has('property1', 'vertex2').limit(100).path().toList() Bes
Hi Vinayak, What happens with a single clause, so without the union: g.V().has('property1', 'vertex3').outE().has('property1', 'edge3').inV().has('property1', 'vertex2').limit(100).path().toList() Bes
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hadoopmarc@...
· #5888
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Query Optimisation
Hi Vinayak, To be sure: we are dealing here with a large graph, so all V().has('property1', 'vertex...') steps do hit the index (no index log warnings)? For one, it would be interesting to see the out
Hi Vinayak, To be sure: we are dealing here with a large graph, so all V().has('property1', 'vertex...') steps do hit the index (no index log warnings)? For one, it would be interesting to see the out
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hadoopmarc@...
· #5886
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Query Optimisation
Hi Vinayak, My answer already contains a concrete suggestion. Replace all union subclauses starting with outE with the alternate form that has a local(................limit1)) construct, as indicated.
Hi Vinayak, My answer already contains a concrete suggestion. Replace all union subclauses starting with outE with the alternate form that has a local(................limit1)) construct, as indicated.
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hadoopmarc@...
· #5884
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Query Optimisation
Hi Vinayak, Can you please try and format your code in a consistent way to ease the reading (even if the editor in this forum is not really helpful in this)? After manual reformatting, Query 1 and the
Hi Vinayak, Can you please try and format your code in a consistent way to ease the reading (even if the editor in this forum is not really helpful in this)? After manual reformatting, Query 1 and the
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hadoopmarc@...
· #5882
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Not able to run queries using spark graph computer from java
Hi Sai, The blog you mentioned is a bit outdated and is for spark-1.x. To get an idea of what changes are needed to get OLAP running with spark-2.x, you can take a look at: https://tinkerpop.apache.or
Hi Sai, The blog you mentioned is a bit outdated and is for spark-1.x. To get an idea of what changes are needed to get OLAP running with spark-2.x, you can take a look at: https://tinkerpop.apache.or
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hadoopmarc@...
· #5881
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Not able to run queries using spark graph computer from java
Hi Sai, What happens in createTraversal()? What do you get with g.V(1469152598528).elementMap() if you open the graph for OLTP queries? Best wishes, Marc
Hi Sai, What happens in createTraversal()? What do you get with g.V(1469152598528).elementMap() if you open the graph for OLTP queries? Best wishes, Marc
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hadoopmarc@...
· #5878
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Support for DB cache for Multi Node Janus Server Setup
Hi Pasan, The multiple janusgraph nodes share the same storage backend, so the common caching is done in the storage backend. Best wishes, Marc
Hi Pasan, The multiple janusgraph nodes share the same storage backend, so the common caching is done in the storage backend. Best wishes, Marc
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hadoopmarc@...
· #5877
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Not able to run queries using spark graph computer from java
Hi Sai, The calling code you present is not complete. The first line should read (because HadoopGraph does not derive from JanusGraph): Graph graph = GraphFactory.open("read-cql.properties"); Best wis
Hi Sai, The calling code you present is not complete. The first line should read (because HadoopGraph does not derive from JanusGraph): Graph graph = GraphFactory.open("read-cql.properties"); Best wis
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hadoopmarc@...
· #5874
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olap connection with spark standalone cluster
Hi Sai, This exception is not really related to this thread. JanusGraph with SparkGraphComputer can only be used with the TinkerPop HadoopGraph. Therefore, the example in the JanusGraph ref docs has a
Hi Sai, This exception is not really related to this thread. JanusGraph with SparkGraphComputer can only be used with the TinkerPop HadoopGraph. Therefore, the example in the JanusGraph ref docs has a
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hadoopmarc@...
· #5873
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Any advice on performance concern of JanusGraph with Cassandra&Elastic Search?
Many organizations use JanusGraph on this scale. Insertion of data is slow so you need massive parallel operations to do an entire bulk load overnight. Most people use tools like Apache Spark for this
Many organizations use JanusGraph on this scale. Insertion of data is slow so you need massive parallel operations to do an entire bulk load overnight. Most people use tools like Apache Spark for this
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By
hadoopmarc@...
· #5870
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Backup & Restore of Janusgraph Data with Mixed Index Backend (Elastisearch)
In theory (not used in practice) the following should be possible: make a snapshot of the ScyllaDB keyspace after the ScyllaDB snapshot is written, make a snapshot of corresponding ES mixed indices re
In theory (not used in practice) the following should be possible: make a snapshot of the ScyllaDB keyspace after the ScyllaDB snapshot is written, make a snapshot of corresponding ES mixed indices re
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By
hadoopmarc@...
· #5863
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Configured graph factory not working after making changes to gremlin-server.yaml
Hi Sai, In your last post a line with ConfiguredGraphFactory.createConfiguration(new MapConfiguration(map)); is missing. A complete working transcript that works out of the box from the janusgraph-ful
Hi Sai, In your last post a line with ConfiguredGraphFactory.createConfiguration(new MapConfiguration(map)); is missing. A complete working transcript that works out of the box from the janusgraph-ful
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hadoopmarc@...
· #5860
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Configured graph factory not working after making changes to gremlin-server.yaml
Hi Sai, I suspect this is related to your setting: #do not auto generate graph vertex id graph.set-vertex-id=true Can you try without? Best wishes, Marc
Hi Sai, I suspect this is related to your setting: #do not auto generate graph vertex id graph.set-vertex-id=true Can you try without? Best wishes, Marc
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hadoopmarc@...
· #5854
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Configured graph factory not working after making changes to gremlin-server.yaml
Hi Sai, "ConfigurationManagementGraph" is not meant to be opened. Please follow the exact instructions described in: https://docs.janusgraph.org/basics/configured-graph-factory/#configurationmanagemen
Hi Sai, "ConfigurationManagementGraph" is not meant to be opened. Please follow the exact instructions described in: https://docs.janusgraph.org/basics/configured-graph-factory/#configurationmanagemen
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hadoopmarc@...
· #5850
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Transaction Cache vs. DB Cache Questions
Hi Joe, Good question and I do not know the answer. Indeed, the documentation suggests that the DB cache stores less information than the transaction cache, but it is not explicit about vertex propert
Hi Joe, Good question and I do not know the answer. Indeed, the documentation suggests that the DB cache stores less information than the transaction cache, but it is not explicit about vertex propert
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hadoopmarc@...
· #5849
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Mapreduce index repair job fails in Kerberos+SSL enabled cluster
Hi Shiva, This sound more like a cluster management question than a JanusGraph question, so my suggested steps are: try to run a simple mapreduce job using HBase, like Hbase's built-in rowcounter exam
Hi Shiva, This sound more like a cluster management question than a JanusGraph question, so my suggested steps are: try to run a simple mapreduce job using HBase, like Hbase's built-in rowcounter exam
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hadoopmarc@...
· #5841
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P.neq() predicate uses wrong ES mapping
https://github.com/JanusGraph/janusgraph/issues/2588 For further explicitness I added the following example: gremlin> g.V().has('x', neq('lion')).elementMap() ==>[id:4264,label:Some,x:x2,y:??] ==>[id:
https://github.com/JanusGraph/janusgraph/issues/2588 For further explicitness I added the following example: gremlin> g.V().has('x', neq('lion')).elementMap() ==>[id:4264,label:Some,x:x2,y:??] ==>[id:
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hadoopmarc@...
· #5839
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P.neq() predicate uses wrong ES mapping
Hi Sergey, The mere mortals skimming over the questions in this forum often need very explicit examples to fully grasp a point. The transcript below, expanding on the earlier one above, shows the exac
Hi Sergey, The mere mortals skimming over the questions in this forum often need very explicit examples to fully grasp a point. The transcript below, expanding on the earlier one above, shows the exac
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hadoopmarc@...
· #5838
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Strange behaviors for Janusgraph 0.5.3 on AWS EMR
Hi Alessandro, The executors tab of the spark UI shows the product of spark.executor.instances times spark.executor.cores. I guess spark.executor.instances defaults to one and EMR might limit the numb
Hi Alessandro, The executors tab of the spark UI shows the product of spark.executor.instances times spark.executor.cores. I guess spark.executor.instances defaults to one and EMR might limit the numb
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hadoopmarc@...
· #5835
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Strange behaviors for Janusgraph 0.5.3 on AWS EMR
Hi Alessandro, Yes, please include the properties file. To be clear, you see in the spark web UI: spark.master=yarn spark.executor.instances=12 and only two executors for 700+ tasks show up, while oth
Hi Alessandro, Yes, please include the properties file. To be clear, you see in the spark web UI: spark.master=yarn spark.executor.instances=12 and only two executors for 700+ tasks show up, while oth
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By
hadoopmarc@...
· #5832
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