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Multiple vertices generated for the same index value and vertex properties missing with RF3
We are facing a weird issue with Replication factor 3 with scylla DB as backend.
- we are using index for looking up V in the graph
- observation is that for many vertices with the same index
We are facing a weird issue with Replication factor 3 with scylla DB as backend.
- we are using index for looking up V in the graph
- observation is that for many vertices with the same index
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By
sauverma
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#5697
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Re: Script16.groovy: 2: unable to resolve class StandardJanusGraph
Hi Marc,
If possible please share the code used, let me check if it can be used to modify my code.
Thanks & Regards,
Vinayak
Hi Marc,
If possible please share the code used, let me check if it can be used to modify my code.
Thanks & Regards,
Vinayak
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By
Vinayak Bali
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#5696
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Re: Script16.groovy: 2: unable to resolve class StandardJanusGraph
Hi Vinayak,
When I replayed your imports I got the same error, but when I tried again it worked. I guess the delay for downloading dependencies was too high and second time the cache could be
Hi Vinayak,
When I replayed your imports I got the same error, but when I tried again it worked. I guess the delay for downloading dependencies was too high and second time the cache could be
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By
hadoopmarc@...
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#5695
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Re: Script16.groovy: 2: unable to resolve class StandardJanusGraph
Hi Marc,
Explicitly, imported StandardJanusGraph using the following import command which is not working:
org.janusgraph.graphdb.database.StandardJanusGraph
Tried Graph approach too, it throws the
Hi Marc,
Explicitly, imported StandardJanusGraph using the following import command which is not working:
org.janusgraph.graphdb.database.StandardJanusGraph
Tried Graph approach too, it throws the
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By
Vinayak Bali
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#5694
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Re: Driver's for java connectivity
Hi,
The goal is to execute a query which retrieves all the data from database and store it to a file to analyse the results
Thanks
Vinayak
Hi,
The goal is to execute a query which retrieves all the data from database and store it to a file to analyse the results
Thanks
Vinayak
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By
Vinayak Bali
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#5693
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Re: Driver's for java connectivity
Vinayak,
If your goal is simply to get your entire graph into a JSON-based format, you may want to consider GraphSON (http://tinkerpop.apache.org/docs/3.4.1/dev/io/#graphson).
Kevin
Vinayak,
If your goal is simply to get your entire graph into a JSON-based format, you may want to consider GraphSON (http://tinkerpop.apache.org/docs/3.4.1/dev/io/#graphson).
Kevin
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By
Kevin Schmidt
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#5692
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Re: Driver's for java connectivity
Hi Kevin,
To verify whether the issue is from the server or client-side, we are trying to execute the same query on the server and output the data in the file. But still it's not possible. Janusgraph
Hi Kevin,
To verify whether the issue is from the server or client-side, we are trying to execute the same query on the server and output the data in the file. But still it's not possible. Janusgraph
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By
Vinayak Bali
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#5691
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Re: Driver's for java connectivity
Vinayak,
Is the out of memory error in the server or the client? And are Janusgraph and Cassandra running in the same JVM or are you running Cassandra separately?
And what is your use case for your
Vinayak,
Is the out of memory error in the server or the client? And are Janusgraph and Cassandra running in the same JVM or are you running Cassandra separately?
And what is your use case for your
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By
Kevin Schmidt
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#5690
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Re: Driver's for java connectivity
Hi Kevin,
JVM size at the server where janusgraph and Cassandra (same machine) is set to 24GB. On the API side, we tried setting it to 8GB. Is there any other way using which we can write the query
Hi Kevin,
JVM size at the server where janusgraph and Cassandra (same machine) is set to 24GB. On the API side, we tried setting it to 8GB. Is there any other way using which we can write the query
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By
Vinayak Bali
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#5689
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Re: Driver's for java connectivity
Vinayak,
What about the memory settings, specifically the max heap, for the JVM Janusgraph is running in?
Your traversal is effectively retrieving your entire graph. Is that really what you need to
Vinayak,
What about the memory settings, specifically the max heap, for the JVM Janusgraph is running in?
Your traversal is effectively retrieving your entire graph. Is that really what you need to
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By
Kevin Schmidt
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#5688
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Re: Driver's for java connectivity
Hi Kevin,
Query: g.V().as('a').outE().as('b').inV().as('c').select('a','b','c').by(valueMap().by(unfold()))
Memory Settings:
maxInitialLineLength: 4096
maxHeaderSize: 8192
maxChunkSize:
Hi Kevin,
Query: g.V().as('a').outE().as('b').inV().as('c').select('a','b','c').by(valueMap().by(unfold()))
Memory Settings:
maxInitialLineLength: 4096
maxHeaderSize: 8192
maxChunkSize:
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By
Vinayak Bali
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#5687
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Re: Driver's for java connectivity
Vinayak,
What is the query? It sounds like whatever it is requires instantiating a lot of objects in order to process the results and construct the JSON.
What are your memory settings for the
Vinayak,
What is the query? It sounds like whatever it is requires instantiating a lot of objects in order to process the results and construct the JSON.
What are your memory settings for the
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By
Kevin Schmidt
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#5686
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Re: Driver's for java connectivity
Hi Marc,
While trying to execute a query using HTTP throws an out memory error. The number of records returned is more hence can't get the entire output. I want an entire output of the query in the
Hi Marc,
While trying to execute a query using HTTP throws an out memory error. The number of records returned is more hence can't get the entire output. I want an entire output of the query in the
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By
Vinayak Bali
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#5685
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Re: How to circumvent transaction cache?
Currently using HBase.
Consider the following:
User A decides to set isPublished of Vertex X from false to true, does not commit yet.
User B changes isPublished of Vertex X from false to true and
Currently using HBase.
Consider the following:
User A decides to set isPublished of Vertex X from false to true, does not commit yet.
User B changes isPublished of Vertex X from false to true and
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By
timon.schneider@...
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#5684
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JMX authentication for cassandra
Hi All,
There is a requirement to enable the JMX authentication of Cassandra. The steps followed are as follows:
1. cd /home/user1/janusgraph-full-0.5.2/conf/cassandra
2. vi cassandra-env.sh
3.
Hi All,
There is a requirement to enable the JMX authentication of Cassandra. The steps followed are as follows:
1. cd /home/user1/janusgraph-full-0.5.2/conf/cassandra
2. vi cassandra-env.sh
3.
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By
Vinayak Bali
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#5683
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Re: How to circumvent transaction cache?
Hi Timon, what exactly is your data storage setup? For example, if you are using Cassandra (with replication) then there is no guarantee your current transaction can read latest value right after
Hi Timon, what exactly is your data storage setup? For example, if you are using Cassandra (with replication) then there is no guarantee your current transaction can read latest value right after
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By
Boxuan Li
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#5682
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Re: Driver's for java connectivity
Hi Vinayak,
What actually is the "desired operation", it is not clear to me? In other words, what is the result after you have run the desired operation?
Best wishes, Marc
Hi Vinayak,
What actually is the "desired operation", it is not clear to me? In other words, what is the result after you have run the desired operation?
Best wishes, Marc
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By
hadoopmarc@...
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#5681
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Re: Script16.groovy: 2: unable to resolve class StandardJanusGraph
Hi Vinayak,
What may confuse you is that the gremlin console does a lot of under the hood imports, but it doesn't import all janusgraph classes. So, you can solve this in two ways:
Preferred: rather
Hi Vinayak,
What may confuse you is that the gremlin console does a lot of under the hood imports, but it doesn't import all janusgraph classes. So, you can solve this in two ways:
Preferred: rather
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By
hadoopmarc@...
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#5680
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Re: How to circumvent transaction cache?
Hi all,
By
timon.schneider@...
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#5679
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Re: Authentication in JanusGraph Server
Thanks for looking at it Marc, and for raising the issue.
As you say, we can work around the issue by using a different persistent store, but I must admit to being intrigued as to why it seems to not
Thanks for looking at it Marc, and for raising the issue.
As you say, we can work around the issue by using a different persistent store, but I must admit to being intrigued as to why it seems to not
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By
grahamwallis.dev@...
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#5678
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