I've tried to call toStrings()
I got this :
title : [Ljava.lang.String;@35112ff7
with the get(), i'm getting this:
title : [Lorg.apache.hadoop.io.Writable;@666f5678
Le mercredi 3 décembre 2014 16:21:40 UTC+1, Costin Leau a écrit :
>
> You're getting back an array ([Samsung EF-C....]) - a Writable wrapper
> around org.hadoop.io.ArrayWritable (to actually
> allow it to be serialized).
> So call toStrings() or get() to get its content.
>
>
> On 12/3/14 3:30 PM, Elias Abou Haydar wrote:
> > I've tried that. It returns a
> org.elasticsearch.hadoop.mr.WritableArrayWritable object. How can I get my
> field content
> > out of that?
> >
> > Le mercredi 3 décembre 2014 14:10:24 UTC+1, Costin Leau a écrit :
> >
> > That's because your MapWritables doesn't use Strings as keys but
> rather org.apache.hadoop.io.Text
> > In other words, you can see the data is in the map however you
> cannot retrieve it since you are using the wrong key
> > (try
> > inspecting the map object types).
> >
> > Try values.get(new Text("title"))
> >
> >
> > On 12/3/14 3:04 PM, Elias Abou Haydar wrote:
> > > That works fine for me thank you! But I'd also wanted to be able
> to build and object from the MapWritable values in the
> > > mapper.
> > >
> > > Consider values as MapWritable object.
> > > When I try to get a specified value from values.get("title") per
> example the returning value is null but the field
> > > exists in the values.keySet()
> > >
> > > Considering the following code :
> > >
> > > System.out.println(values.keySet());
> > > System.out.println(values.toString());
> > > System.out.println("title : " + values.get("title"));
> > > System.out.println("category : " + values.get("category"));
> > >
> > > This is a snippet from the debug output :
> > >
> > > [title, categoryId]
> > > {title=[Samsung EF-CI950BCEGWW S View], categoryId=[3485]}
> > > title : null
> > > category : null
> > >
> > > Thanks again!
> > >
> > > Le mardi 2 décembre 2014 12:36:57 UTC+1, Costin Leau a écrit :
> > >
> > > Simply specify the fields that you are interested in, in the
> query and you are good to go.
> > >
> > > [1]
> http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-request-fields.html
>
> > <
> http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-request-fields.html>
>
>
> > > <
> http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-request-fields.html
>
> > <
> http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-request-fields.html>>
>
>
> > >
> > > On 12/2/14 12:52 PM, Elias Abou Haydar wrote:
> > > > I'm trying to write a mapreduce job where I can query
> elasticsearch so it can return to me specific fields. Is there any
> > > > way to do that?
> > > >
> > > > My mapping contains about 30 fields and I will need just 4
> of them ("_id","title","description","category")
> > > >
> > > > The way I was doing it is to process each answer to get
> those fields, but I'm looking for a cleaner way to do that.
> > > >
> > > > Any help or suggestion is appreciated.
> > > >
> > > > Thanks!
> > > >
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>
> > <
> https://groups.google.com/d/msgid/elasticsearch/ac512248-b3fe-4023-b28e-a4263ae720ec%40googlegroups.com>
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>
> > > <
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>
> > <
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> > > > <
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>
> >
> > >
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> > <https://groups.google.com/d/optout>>.
> > >
> > > --
> > > Costin
> > >
> > > --
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>
>
> >
> > > For more options, visithttps://groups.google.com/d/optout <
> https://groups.google.com/d/optout>.
> > --
> > Costin
> >
> > --
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>
>
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