如何从Elasticsearch Index 2.2版中删除所有类型的文档

Question

I'm trying to remove all documents of a specific type using the nodejs client for elastic search.

I have this code:

var deleteType = function (type, done) {
    client().indices.delete({
      "index": settings.index,
      "type": type,
      "ignore": [404]
    }, function (error, response) {
      if (error) {
        logger.error(error, 'Failed to delete index type');
        done(error);
      } else {
        logger.debug({"res": response}, "deleted %s index", type);
        done();
      }
    });
  };

The type and index parameters are fine. But it seems to be deleting the entire index, not just docs of that type. I'm guessing that I've made the wrong API call with indices.delete .

What is the right way to delete all documents of a specific "type" within an index?

Answer 1

Prior to version 2.0, you can delete a type in an index using the Delete Mapping as part of the Indices API .

Allow to delete a mapping (type) along with its data. The REST endpoints are

[DELETE] /{index}/{type}

[DELETE] /{index}/{type}/_mapping

[DELETE] /{index}/_mapping/{type}

As of version 2.0, Elasticsearch no longer supports this directly. The documentation explains it like this:

It is no longer possible to delete the mapping for a type. Instead you should delete the index and recreate it with the new mappings.

However, this functionality is made available by the Delete By Query Plugin .

The delete-by-query plugin adds support for deleting all of the documents (from one or more indices) which match the specified query. It is a replacement for the problematic delete-by-query functionality which has been removed from Elasticsearch core.

Simply construct a query that filters for the type in your index you want to delete, and use that as the basis for your "Delete By Query".