Wikipedia River Plugin for Elasticsearch

The Wikipedia River plugin allows index wikipedia.

In order to install the plugin, run:

bin/plugin -install elasticsearch/elasticsearch-river-wikipedia/2.3.0

You need to install a version matching your Elasticsearch version:

Elasticsearch	Wikipedia River Plugin	Docs
master	Build from source	See below
es-1.x	Build from source	2.4.0-SNAPSHOT
es-1.3	2.3.0	2.3.0
es-1.2	2.2.0	2.2.0
es-1.0	2.0.0	2.0.0
es-0.90	1.3.0	1.3.0

To build a SNAPSHOT version, you need to build it with Maven:

mvn clean install
~/elasticsearch/bin/plugin --remove river-wikipedia
~/elasticsearch/bin/plugin --install river-wikipedia --url file:target/releases/elasticsearch-river-wikipedia-3.0.1-SNAPSHOT.zip

Create river

A simple river to index Wikipedia (English pages). Create it using:

curl -XPUT localhost:9200/_river/wiki/_meta -d '{    "type" : "wikipedia" }'
    "type" : "wikipedia",
    "wikipedia" : {
        "url" : "file:///Users/me/dev/ai/nlp/qa/elasticsearch-river-wikiphrases/enwiki-latest-pages-articles.xml.bz2"
    }
}
'

The default download is the latest wikipedia dump. It can be changed using:

{
    "type" : "wikipedia",
    "wikipedia" : {
        "url" : "url to link to wikipedia dump"
    }
}

The index name defaults to the river name, and the type defaults to page. Both can be changed in the index section:

{
    "type" : "wikipedia",
    "index" : {
        "index" : "my_index",
        "type" : "my_type"
    }
}

Since 1.3.0, by default, bulk size is 100. A bulk is flushed every 5s. Number of concurrent requests allowed to be executed is 1. You can modify those settings within index section:

{
    "type" : "wikipedia",
    "index" : {
        "index" : "my_index",
        "type" : "my_type",
        "bulk_size" : 1000,
        "flush_interval" : "1s",
        "max_concurrent_bulk" : 3
    }
}

Mapping

By default, wikipedia river will generate the following mapping:

{
   "page": {
      "properties": {
         "category": {
            "type": "string"
         },
         "disambiguation": {
            "type": "boolean"
         },
         "link": {
            "type": "string"
         },
         "redirect": {
            "type": "boolean"
         },
         "redirect_page": {
            "type": "string"
         },
         "special": {
            "type": "boolean"
         },
         "stub": {
            "type": "boolean"
         },
         "text": {
            "type": "string"
         },
         "title": {
            "type": "string"
         }
      }
   }
}

License

This software is licensed under the Apache 2 license, quoted below.

Copyright 2009-2014 Elasticsearch <http://www.elasticsearch.org>

Licensed under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy of
the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
License for the specific language governing permissions and limitations under
the License.