Elasticsearch timout doesn't work when do searching

1
votes

Elasticsearch version (bin/elasticsearch --version):5.2.2

JVM version (java -version): 1.8.0_121

OS version (uname -a if on a Unix-like system): opensuse

  1. Do search with " curl -XGET 'localhost:9200/_search?pretty&timeout=1ms' "
  2. The part of response is : { "took" : 5, "timed_out" : false, "_shards" : { "total" : 208, "successful" : 208, "failed" : 0 }, "hits" : { "total" : 104429, "max_score" : 1.0, "hits" : ...
  3. The took time is 5ms, and timeout setting is 1ms. Why "timed_out" is false rather than true.

Thanks

1
elasticsearch

1 Answers

0
votes

The timeout is per searched shard (looks like 208 in your case), while the took is for the entire query. On a per shard level you are within the limit. The documentation has some additional information on when you will hit timed_out and more caveats.

Try with a more expensive query (leading wildcard, fuzziness,...) — I guess then you should hit the (shard) limit.