Some Change in Percolation/QueryStringQuery/Mapping between 7.6.2 and 7.7.0?

Elastic Stack Elasticsearch
1

I've noticed that, while trying to migrate from Elasticsearch 7.5.2 -> 7.9.2, something seems to have changed in how percolator queries seem to work. I have narrowed down my problem to a change between 7.6.2 and 7.7.0; the following repro results in 1 hit in ES 7.6.2, but 0 hits in ES 7.7+:

curl -XPUT "localhost:${PORT}/percolation-index" -H 'Content-Type:application/json' -d '
{
  "settings": {
    "percolator": {
      "map_unmapped_fields_as_text": true
    }
  },
  "mappings": {
    "properties": {
      "percolator_field": {
        "type": "percolator"
      }
    }
  }
}'
curl -XPOST "localhost:${PORT}/percolation-index/_doc?refresh=true" -H 'Content-Type:application/json' -d '
{
  "percolator_field": {
	"query_string": {
	  "query": "message:test"
	}
  }
}'
curl -XPOST "localhost:${PORT}/percolation-index/_search?pretty" -H 'Content-Type:application/json' -d '
{
  "query": {
    "percolate": {
      "field": "percolator_field",
      "document": {
        "message": "test stuff"
      }
    }
  }
}'

If I instead do a match query in my percolator:

curl -XPOST "localhost:${PORT}/percolation-index/_doc?refresh=true" -H 'Content-Type:application/json' -d '
{
  "percolator_field": {
	"match": {
	  "message": "test"
	}
  }
}'

The percolator matches as expected on both versions.

1 Like
2

Can we get an update on this? This is blocking our 7.9.2 upgrade, and there don't seem to be any mention of this change in the release docs.

3

This issue was also filed as a bug - https://github.com/elastic/elasticsearch/issues/63150

We noticed the 7.9.3 and 7.9.4 tag were added to it, but no info on why. Will this be fixed in 7.9.4?

4

May be @HenningAndersen can tell if this will be fixed in a coming version?

Side note: I don't think that we should tag an issue with the expected version but instead we should tag the PR. My 2 cents.

5

I added the label because it was indicated in the issue that the problem exists on the specific version, not as an indication of resolution version. I removed the label to avoid this confusion.

I have no info about whether or when a fix can be expected.

1 Like
6

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