elasticsearch-import-data

Why is there no such DataImportHandler thing in ElasticSearch? Uhm, well ... but because:

1. You should really consider your own scripts 
(be it jvm based, perl, ruby, php, nodejs/javascript) 
to feed ElasticSearch via bulk indexing: 
http://www.elasticsearch.org/guide/reference/java-api/bulk.html

2. There are two projects doing it already:
 * http://code.google.com/p/sql-to-nosql-importer/
 * https://github.com/Aconex/scrutineer (keeps DB in synch with ES or solr!)

3. In theorie you could use DIH in elasticsearch as well ;) 
http://www.mattweber.org/2011/12/14/elasticsearch-mock-solr-plugin/

4. In mysql you could add an http trigger: 
http://code.google.com/p/mysql-udf-http

5. You could use hydra and start with the 'correct' & scalable
 solution: https://github.com/Findwise/Hydra