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Re: Indexing Strategies for RDF edges/predicates on Janusgraph
Hi Amiya, I saw that but wasn't quite sure the intent given the example. It talks about edge labels but the examples are vertices & values?
g.V(h).out('mother') -> returns a vertex
Hi Amiya, I saw that but wasn't quite sure the intent given the example. It talks about edge labels but the examples are vertices & values?
g.V(h).out('mother') -> returns a vertex
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By
Matthew Nguyen <nguyenm9@...>
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#6359
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Re: Indexing Strategies for RDF edges/predicates on Janusgraph
Hi Mathew,
As per the below Note from Janusgraph docs, even if company is having 1k different types of edge related to it, traverse by edge lable will be fast.
Such as find employees employedBy (edge
Hi Mathew,
As per the below Note from Janusgraph docs, even if company is having 1k different types of edge related to it, traverse by edge lable will be fast.
Such as find employees employedBy (edge
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By
AMIYA KUMAR SAHOO
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#6358
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Re: Indexing Strategies for RDF edges/predicates on Janusgraph
Hi Matthew,
It would be possible to replace the employedBy, isSoldby, isLeasedBy relations with a relatedToCompany relation with employment, selling and lease properties. But I do not see any
Hi Matthew,
It would be possible to replace the employedBy, isSoldby, isLeasedBy relations with a relatedToCompany relation with employment, selling and lease properties. But I do not see any
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By
hadoopmarc@...
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#6357
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Indexing Strategies for RDF edges/predicates on Janusgraph
Hi, I am trying to build a triplestore ontop of JG. The general model is:
Vertex (subject or object) Properties:
Label
Value (IRI, Literal) - indexed
Edge (predicate) Properties:
Label
Hi, I am trying to build a triplestore ontop of JG. The general model is:
Vertex (subject or object) Properties:
Label
Value (IRI, Literal) - indexed
Edge (predicate) Properties:
Label
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By
Matthew Nguyen <nguyenm9@...>
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#6356
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Re: Janusgraph embedded multi instance(JVM) data sync issue
Hi Marc,
Thanks for your suggestion,
However I am testing it on a local environment having a single replication factor. I believe if the replication factor is one then in all cases it should give me
Hi Marc,
Thanks for your suggestion,
However I am testing it on a local environment having a single replication factor. I believe if the replication factor is one then in all cases it should give me
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By
Pawan Shriwas
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#6355
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[ANNOUNCE] JanusGraph 0.6.1 Release
The JanusGraph Technical Steering Committee is excited to announce the release of JanusGraph 0.6.1.
JanusGraph is an Apache TinkerPop enabled property graph database with support for a variety of
The JanusGraph Technical Steering Committee is excited to announce the release of JanusGraph 0.6.1.
JanusGraph is an Apache TinkerPop enabled property graph database with support for a variety of
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By
Oleksandr Porunov
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#6354
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Re: High HBase backend 'configuration' row contention
Hi Tendai,
"Not serializable" sounds as if you pass a JanusGraph instance from the Spark driver to the executor. The function that runs on the Spark executor should call some static function on the
Hi Tendai,
"Not serializable" sounds as if you pass a JanusGraph instance from the Spark driver to the executor. The function that runs on the Spark executor should call some static function on the
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By
hadoopmarc@...
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#6353
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Re: High HBase backend 'configuration' row contention
Hi Marc,
Thanks for the feedback and suggestion. We investigated applying the JanusGraphFactory inside a singleton object as you've suggested, but ran into the issue that the JanusGraphFactory is not
Hi Marc,
Thanks for the feedback and suggestion. We investigated applying the JanusGraphFactory inside a singleton object as you've suggested, but ran into the issue that the JanusGraphFactory is not
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By
Tendai Munetsi
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#6352
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Re: Janusgraph embedded multi instance(JVM) data sync issue
Hi Pawan,
You are right, if issues already arise without index, you should investigate that first, even though a large graph without indices is useless in itself.
See the third question from Boxuan Li
Hi Pawan,
You are right, if issues already arise without index, you should investigate that first, even though a large graph without indices is useless in itself.
See the third question from Boxuan Li
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By
hadoopmarc@...
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#6351
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Re: JG Schema - addConnection seem to create duplicate connections
Hi Marc,
Thanks a lot for looking into this. As requested, I filled an issue about this on Github: https://github.com/JanusGraph/janusgraph/issues/2950
Thanks,
Peter
Hi Marc,
Thanks a lot for looking into this. As requested, I filled an issue about this on Github: https://github.com/JanusGraph/janusgraph/issues/2950
Thanks,
Peter
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By
Peter Molnar
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#6350
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Re: Janusgraph embedded multi instance(JVM) data sync issue
Hi Marc,
I don't think data cache was created due to elastic search/mixed index only. I have seen this on basic property/node without index as well. I am thinking let's work on basic node/property
Hi Marc,
I don't think data cache was created due to elastic search/mixed index only. I have seen this on basic property/node without index as well. I am thinking let's work on basic node/property
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By
Pawan Shriwas
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#6349
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Re: JG Schema - addConnection seem to create duplicate connections
Hi Peter,
Thanks for reporting. I think it is a bug. I checked with the standalone gremlin REPL of janusgraph-0.6.0, using:
graph = JanusGraphFactory.open('conf/janusgraph-inmemory.properties')
This
Hi Peter,
Thanks for reporting. I think it is a bug. I checked with the standalone gremlin REPL of janusgraph-0.6.0, using:
graph = JanusGraphFactory.open('conf/janusgraph-inmemory.properties')
This
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By
hadoopmarc@...
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#6348
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Re: Fastest way to check if a property key is mixed indexed or not
Hi Harshit,
The performance impact for JanusGraph when including a property key in multiple mixed indices, is negligable (the selection of the index for a specific query will be a tat slower).
Hi Harshit,
The performance impact for JanusGraph when including a property key in multiple mixed indices, is negligable (the selection of the index for a specific query will be a tat slower).
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By
hadoopmarc@...
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#6347
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Re: Janusgraph embedded multi instance(JVM) data sync issue
Hi Pawan,
OK, let's investigate further. You say that the issue occurs for both vertex creation and modification. Let's take the clearest case first: vertex creation with an indexed property. So, in
Hi Pawan,
OK, let's investigate further. You say that the issue occurs for both vertex creation and modification. Let's take the clearest case first: vertex creation with an indexed property. So, in
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By
hadoopmarc@...
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#6346
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Re: Fastest way to check if a property key is mixed indexed or not
Will there be any performance impact if i will index a property key in multiple indices (mixed index)?
Will there be any performance impact if i will index a property key in multiple indices (mixed index)?
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By
Harshit Sharma
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#6345
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Re: Fastest way to check if a property key is mixed indexed or not
Hi Harshit,
The concept "property is indexed or not" is ambiguous because an index can have multiple property keys. If you want to know if there is an index with a specific property key as the only
Hi Harshit,
The concept "property is indexed or not" is ambiguous because an index can have multiple property keys. If you want to know if there is an index with a specific property key as the only
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By
hadoopmarc@...
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#6344
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Re: Janusgraph embedded multi instance(JVM) data sync issue
Hi Marc,
I have removed cache properties from instances and we already have new transactions for each api operation but still facing stale data issues in other instances for some time.
Below is the
Hi Marc,
I have removed cache properties from instances and we already have new transactions for each api operation but still facing stale data issues in other instances for some time.
Below is the
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By
Pawan Shriwas
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#6343
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Fastest way to check if a property key is mixed indexed or not
Is there a way I can check if a particular property is indexed or not?
I know the following method but there I will have to traverse all indexes
List<JanusgraphIndex> indexList =
Is there a way I can check if a particular property is indexed or not?
I know the following method but there I will have to traverse all indexes
List<JanusgraphIndex> indexList =
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By
Harshit Sharma
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#6342
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Re: New Property keys in existing index getting stuck in registered state
Is it allowed to index the same property key in two different indexes.
For example I created a property key graphId and created two indexes vertexIndex, edgeIndex.
Index graphId in both indexes.
The
Is it allowed to index the same property key in two different indexes.
For example I created a property key graphId and created two indexes vertexIndex, edgeIndex.
Index graphId in both indexes.
The
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By
Harshit Sharma
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#6341
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Re: New Property keys in existing index getting stuck in registered state
Can you post the stacktrace (or the place where NPE is thrown)?
Can you post the stacktrace (or the place where NPE is thrown)?
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By
Boxuan Li
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#6340
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