StackOverflow2013

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plurals

PO
primarykey
Id
9654090
data
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0
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0
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CommentCount
1
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2012-03-11T10:15:14.183
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2012-03-11T10:28:41.390
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2012-03-11T10:28:41.390
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1262067
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1262067
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9200940
PostTypeId
2
Score
6
ViewCount
0
LastEditorDisplayName
text
Body
The latest release of TDB has two command line utilities for bulk loading: tdbloader and tdbloader2. The first is pure Java and it runs on Windows as well as on any machine with a JVM. The second is a mix of Java and UNIX shell script (in particular it uses UNIX sort). It runs on Linux, I am not sure it runs on Cygwin. I suggest you use tdbloader on a 64-bit machine with as much RAM as you can find. :-) The latest release of TDB is available here: <a href="http://www.apache.org/dist/incubator/jena/jena-tdb-0.9.0-incubating/jena-tdb-0.9.0-incubating-distribution.zip" rel="noreferrer">http://www.apache.org/dist/incubator/jena/jena-tdb-0.9.0-incubating/jena-tdb-0.9.0-incubating-distribution.zip</a> The development version of TDB has an additional bulk loader command: tdbloader3. This is a pure Java version of tdbloader2. Instead of using UNIX sort (which works only on text files) we used a pure Java external sort with binary files. For more details on tdbloader3, search for the JENA-117 issue. You can find a SNAPSHOT of TDB in the Apache snapshots repository, you are warned, that has not been released yet. For the more adventurous there is also tdbloader4 which is not included in Apache Jena and it is to be considered an experimental prototype. tdbloader4 builds TDB indexes (i.e. B+Tree indexes) using MapReduce (this is stretching a little bit the MapReduce model, but it works). You can find tdbloader4 here: <a href="https://github.com/castagna/tdbloader4" rel="noreferrer">https://github.com/castagna/tdbloader4</a> To conclude, my advise to you, on Windows, is: download the latest official release of TDB and use tdbloader with a 64-bit machine with a lot of RAM. If you do not have one, use an m1.xlarge EC2 instance (i.e. 15 GB of RAM) (or equivalent). For more help, I invite you to join the official jena-users@incubator.apache.org mailing list where, I am sure, you'll have better and faster support.
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1. POhow to load large Ntriple data into jena tdb
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1. UScastagna
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1. UScastagna
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1. POhow to load large Ntriple data into jena tdb
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