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Re: set number of map tasks for HBase MR - HBase - [mail # user]
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...Ah.. I still use the old api for the job configuration. In the JobConf object, you can call the setNumMapTasks() function. -ak Amandeep Khurana Computer Science Graduate Student...
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Author: Amandeep Khurana,
2010-04-11, 03:38
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Re: set number of map tasks for HBase MR - HBase - [mail # user]
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...You can set the number of map tasks in your job config to a big number (eg: 100000), and the library will automatically spawn one map task per region. -ak Amandeep Khurana Compu...
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Author: Amandeep Khurana,
2010-04-11, 03:04
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Re: Using SPARQL against HBase - HBase - [mail # user]
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...Create a jira to spec out the design for the RDF layer: https://issues.apache.org/jira/browse/HBASE-2433. I'll post an initial design and some other ideas on it soon. Go ahead and put in wha...
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Author: Amandeep Khurana,
2010-04-10, 23:37
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Re: Using SPARQL against HBase - HBase - [mail # user]
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...Scaling up is not going to be an issue unless you demand performance (in terms of low latency of queries) too. Here's a paper that has some ideas on how we can get good performance on querie...
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Author: Amandeep Khurana,
2010-04-06, 05:44
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Re: Using SPARQL against HBase - HBase - [mail # user]
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...Thats right.. We dont delete nodes and want easy navigability, so adjacent lists work out well. On Mon, Apr 5, 2010 at 7:53 AM, Tim Robertson wrote: ...
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Author: Amandeep Khurana,
2010-04-05, 19:15
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Re: Using SPARQL against HBase - HBase - [mail # user]
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...1. We want to have a SPARQL query engine over it that can return results to queries in real time, comparable to other systems out there. And since we will have HBase as the storage layer, we...
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Author: Amandeep Khurana,
2010-04-05, 10:21
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Re: Using SPARQL against HBase - HBase - [mail # user]
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...Edward, I think for now we'll start with modeling how to store triples such that we can run real time SPARQL queries on them and then later look at the Pregel model and how we can leve...
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Author: Amandeep Khurana,
2010-04-05, 06:14
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Re: Using SPARQL against HBase - HBase - [mail # user]
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...Andrew and I just had a chat about exploring how we can leverage HBase for a scalable RDF store and we'll be looking at it in more detail over the next few days. Is anyone of you inter...
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Author: Amandeep Khurana,
2010-04-01, 21:45
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Re: Using SPARQL against HBase - HBase - [mail # user]
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...Raffi, This article might interest you: http://decentralyze.com/2010/03/09/rdf-meets-nosql/ Amandeep Amandeep Khurana Computer Science Graduate Student University of Calif...
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Author: Amandeep Khurana,
2010-04-01, 04:23
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Re: Using SPARQL against HBase - HBase - [mail # user]
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...I didnt do queries over triples. It was essentially a graph stored as an adjacency list and used gets and scans for all the work. Andrew, if Trend is interested too, we can make this a...
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Author: Amandeep Khurana,
2010-03-31, 21:42
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