|
How roll back works in janus graph, will it roll back the storage write in one transaction
Hi, for below sample code. storage backend is Hbase, "name" is used as index, it will at least has two rows update: but what if index update succeed while vertex update failed(throw exception).
Hi, for below sample code. storage backend is Hbase, "name" is used as index, it will at least has two rows update: but what if index update succeed while vertex update failed(throw exception).
|
By
Lighter <yangch...@...>
·
#4202
·
|
|
olap connection with spark standalone cluster
Hi everyone,
I downloaded a fresh spark binary relaese (spark-2.4.0-hadoop2.7) and set the master to spark://127.0.0.1:7077. I then started all services via $SPARK_HOME/sbin/start-all.sh.
I checked
Hi everyone,
I downloaded a fresh spark binary relaese (spark-2.4.0-hadoop2.7) and set the master to spark://127.0.0.1:7077. I then started all services via $SPARK_HOME/sbin/start-all.sh.
I checked
|
By
Lilly <lfie...@...>
·
#4201
·
|
|
New committer: Dmitry Kovalev
On behalf of the JanusGraph Technical Steering Committee (TSC), I'm pleased to welcome a new committer on the project!
Dmitry Kovalev made a major contribution with the production-ready in-memory
On behalf of the JanusGraph Technical Steering Committee (TSC), I'm pleased to welcome a new committer on the project!
Dmitry Kovalev made a major contribution with the production-ready in-memory
|
By
"Florian Hockmann" <f...@...>
·
#4200
·
|
|
Re: [QUESTION] Usage of the cassandraembedded
I now experimented with many types of settings now for the cql connection and timed how long it took.
My observation is the following:
-Embedded with bulk loading took 16 min
- CQL without bulk
I now experimented with many types of settings now for the cql connection and timed how long it took.
My observation is the following:
-Embedded with bulk loading took 16 min
- CQL without bulk
|
By
Lilly <lfie...@...>
·
#4199
·
|
|
Re: index not used for query
index.search.backend=elasticsearch
index.search.hostname=127.0.0.1
index.search.elasticsearch.client-only=true
Do you think it is due to elastic search?
index.search.backend=elasticsearch
index.search.hostname=127.0.0.1
index.search.elasticsearch.client-only=true
Do you think it is due to elastic search?
|
By
Anatoly Belikov <awbe...@...>
·
#4198
·
|
|
Re: [QUESTION] Usage of the cassandraembedded
For "violation of unique key" it could be the case that cql checks id's to be unique (JanusGraph could run out of id's in the batch loading mode) but i'm not sure what the embedded backend is
For "violation of unique key" it could be the case that cql checks id's to be unique (JanusGraph could run out of id's in the batch loading mode) but i'm not sure what the embedded backend is
|
By
faro...@...
·
#4197
·
|
|
Re: [QUESTION] Usage of the cassandraembedded
Your block-size should be large in this example, see Id Creation: https://www.experoinc.com/post/janusgraph-nuts-and-bolts-part-1-write-performance
Am Dienstag, 8. Oktober 2019 09:05:56 UTC+2 schrieb
Your block-size should be large in this example, see Id Creation: https://www.experoinc.com/post/janusgraph-nuts-and-bolts-part-1-write-performance
Am Dienstag, 8. Oktober 2019 09:05:56 UTC+2 schrieb
|
By
faro...@...
·
#4196
·
|
|
JanusGraph sessions at Scylla Summit
Hello everyone! Though I generally just lurk and absorb everyone's collective wisdom, today I wanted to let you know we'll have a pair of JanusGraph practitioners speaking at Scylla Summit this year,
Hello everyone! Though I generally just lurk and absorb everyone's collective wisdom, today I wanted to let you know we'll have a pair of JanusGraph practitioners speaking at Scylla Summit this year,
|
By
Peter Corless <pe...@...>
·
#4195
·
|
|
Re: [QUESTION] Usage of the cassandraembedded
Hi Jan,
So I tried it again. First of all, I remembered, that for cql I need to commit after each step. Otherwise, I get "violation of unique key" errors, even though I am actually not. Is this
Hi Jan,
So I tried it again. First of all, I remembered, that for cql I need to commit after each step. Otherwise, I get "violation of unique key" errors, even though I am actually not. Is this
|
By
Lilly <lfie...@...>
·
#4194
·
|
|
Re: [QUESTION] Usage of the cassandraembedded
Hi Jan,
Ok then I probably screwed up somewhere. I kind of thought this was to be expected, which is why I did not check it more thoroughly.
Maybe the way I persisted is not working well for cql.
I
Hi Jan,
Ok then I probably screwed up somewhere. I kind of thought this was to be expected, which is why I did not check it more thoroughly.
Maybe the way I persisted is not working well for cql.
I
|
By
Lilly <lfie...@...>
·
#4193
·
|
|
Re: [QUESTION] Usage of the cassandraembedded
hi,
I think that embedded cassandra can lead to some classpath hell, so this option should at least not be possible with default installation.
I have a project where I put my library into janusgraph
hi,
I think that embedded cassandra can lead to some classpath hell, so this option should at least not be possible with default installation.
I have a project where I put my library into janusgraph
|
By
nicolas...@...
·
#4192
·
|
|
Re: [QUESTION] Usage of the cassandraembedded
We don't see this problem on persistence.
It would be good know what takes longer. Do like to give some more informations?
Jan
We don't see this problem on persistence.
It would be good know what takes longer. Do like to give some more informations?
Jan
|
By
faro...@...
·
#4191
·
|
|
Re: Persistence of graph view
Hi Lilly,
Thanks for explaining, I feared already that I had missed something. I think each type of query has its optimal treatment. When you have two properties to select on, you would have the
Hi Lilly,
Thanks for explaining, I feared already that I had missed something. I think each type of query has its optimal treatment. When you have two properties to select on, you would have the
|
By
marc.d...@...
·
#4190
·
|
|
Re: Titan to Janus - Change in behavior for properties with the same name but different datatypes.
Thanks Abhay and Marc.
It came as a bit surprise due to existing behavior in Titan.
This is a bit restrictive given the nature of my app where other than few fixed properties which are defined by the
Thanks Abhay and Marc.
It came as a bit surprise due to existing behavior in Titan.
This is a bit restrictive given the nature of my app where other than few fixed properties which are defined by the
|
By
Bharat Dighe <bdi...@...>
·
#4189
·
|
|
Re: Persistence of graph view
Hi Marc,
I guess I did not explain my issue very well.
What I meant to say is this. Suppose these ids correspond to some filtering criterion. Now having these ids I can create the subgraph.
However,
Hi Marc,
I guess I did not explain my issue very well.
What I meant to say is this. Suppose these ids correspond to some filtering criterion. Now having these ids I can create the subgraph.
However,
|
By
Lilly <lfie...@...>
·
#4188
·
|
|
Re: Persistence of graph view
Hi Lily,
When you have the vertex id, you do not need any index. The index is a lookup table from property value to vertex id.
Cheers, Marc
Op maandag 7 oktober 2019 08:15:50 UTC+2 schreef Lilly:
Hi Lily,
When you have the vertex id, you do not need any index. The index is a lookup table from property value to vertex id.
Cheers, Marc
Op maandag 7 oktober 2019 08:15:50 UTC+2 schreef Lilly:
|
By
marc.d...@...
·
#4187
·
|
|
Re: Exception in java11 while commit [ org.janusgraph.diskstorage.locking.PermanentLockingException: Permanent locking failure]
Java 11 is simply not supported right now. So you have to use Java 8:
From the Getting Started section of the docs
Am Dienstag, 1. Oktober 2019 16:34:59 UTC+2 schrieb nix...@...:
Java 11 is simply not supported right now. So you have to use Java 8:
From the Getting Started section of the docs
Am Dienstag, 1. Oktober 2019 16:34:59 UTC+2 schrieb nix...@...:
|
By
Florian Hockmann <f...@...>
·
#4186
·
|
|
Re: index are not use
Please share a code listing that shows how you have created the indices and your Gremlin traversal that results in this warning.
Am Mittwoch, 2. Oktober 2019 13:06:02 UTC+2 schrieb arnab kumar pan:
Please share a code listing that shows how you have created the indices and your Gremlin traversal that results in this warning.
Am Mittwoch, 2. Oktober 2019 13:06:02 UTC+2 schrieb arnab kumar pan:
|
By
Florian Hockmann <f...@...>
·
#4185
·
|
|
Re: How to take backup and restore of Janusgraph data backed by scylladb?
JanusGraph doesn't provide any utility for this on its own. You can instead simply refer to your backend, ScyllaDB in your case, and make a backup of that just like it would be done without
JanusGraph doesn't provide any utility for this on its own. You can instead simply refer to your backend, ScyllaDB in your case, and make a backup of that just like it would be done without
|
By
Florian Hockmann <f...@...>
·
#4184
·
|
|
Re: [QUESTION] Usage of the cassandraembedded
Hi Jan,
I found very noticeable performance improvements on graph persistence. It took considerably longer to persist a large graph via cql.
Is this unusual ?
Lilly
Am Montag, 7. Oktober 2019 10:28:18
Hi Jan,
I found very noticeable performance improvements on graph persistence. It took considerably longer to persist a large graph via cql.
Is this unusual ?
Lilly
Am Montag, 7. Oktober 2019 10:28:18
|
By
Lilly <lfie...@...>
·
#4183
·
|