title: Elastic search handling missing indices
body: <p>I would like to know if there is a way to specify to elastic search that I don't mind missing or erroneous indices on my search query. In other words I have a query which tries to query 7 different indices but one of them might be missing depending on the circumstances. What I want to know is that if there is a way to say, forget the broken one and get me the results of the other 6 indices?</p>
  
  <pre><code>    SearchRequestBuilder builder = elasticsearchClient.getClient().prepareSearch(indices)
              .setQuery(Query.buildQueryFrom(term1, term2))
              .addAggregation(AggregationBuilders.terms('term')
                                          .field('field')
                                          .shardSize(shardSize)
                                          .size(size)
                                          .minDocCount(minCount));
  </code></pre>
  
  <p>As an example query you can find the above one.</p>