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From "Souri (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (ANY23-248) NTriplesWriter on hadoop : issue with MIME type
Date Tue, 03 Feb 2015 00:20:35 GMT

    [ https://issues.apache.org/jira/browse/ANY23-248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14302097#comment-14302097
] 

Souri edited comment on ANY23-248 at 2/3/15 12:19 AM:
------------------------------------------------------

So, in the local mode the code was using SesameRDFaParser , but on hadoop it was not able
to find this parser (still need to figure out why).
So, I modified  the following line from RDFParserFactory.java

final RDFParser parser = Rio.createParser(RDFFormat.RDFA);; (line#120)

to 
final RDFParser parser = new SesameRDFaParser();

And it started working on hadoop.


was (Author: jirabug):
So, in the local mode the code was using SesameRDFaParser , but on hadoop it was not able
to find this parser (still need to figure out why).
So, I modified  the following line from RDFParserFactory.java

final RDFParser parser = new SesameRDFaParser(); (line#120)

to 
final RDFParser parser = new SesameRDFaParser();

And it started working on hadoop.

> NTriplesWriter on hadoop : issue with MIME type
> -----------------------------------------------
>
>                 Key: ANY23-248
>                 URL: https://issues.apache.org/jira/browse/ANY23-248
>             Project: Apache Any23
>          Issue Type: Bug
>    Affects Versions: 1.1
>         Environment: hadoop,linux
>            Reporter: Souri
>            Priority: Minor
>             Fix For: 1.2
>
>
> I am trying to create n-triples from an html string. I am using the following code to
do it:
> StringDocumentSource documentSource = new StringDocumentSource(html, null);
>             ByteArrayOutputStream out = new ByteArrayOutputStream();
>             final NTriplesWriter tripleHandler = new NTriplesWriter(out);
>             Any23 runner = new Any23();
>            
>             runner.extract(documentSource,tripleHandler);
>             tripleHandler.close();
>             String result = out.toString("us-ascii");
>             return result;
> This is giving me the error :
> java.lang.NullPointerException
> 	at org.apache.any23.extractor.SingleDocumentExtraction.filterExtractorsByMIMEType(SingleDocumentExtraction.java:421)
> 	at org.apache.any23.extractor.SingleDocumentExtraction.run(SingleDocumentExtraction.java:223)
> 	at org.apache.any23.Any23.extract(Any23.java:298)
> 	at org.apache.any23.Any23.extract(Any23.java:433)
> I am running this in hadoop. When I run locally with a single file it works, but doesn't
work when run on hadoop.
> Can someone please tell me how to go about this issue?



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