Increase Elasticsearch max_clause_count
#225
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Complex configurations with many synonyms can run into problems with
Elasticsearch throwing an error about exceeding the
max_clause_count
.Internally, Elasticsearch takes queries that may be quite short and
rewrites them into potentially many Lucene clauses. The Elasticsearch
default
(https://www.elastic.co/guide/en/elasticsearch/reference/current/search-settings.html)
is to allow up to 1024 clauses.
While the Elasticsearch docs recommend against increasing this setting,
doing so allows us to handle more complex synonym configurations, and is
worth exploring.
Connects OpenTransitTools-BonePile/trimet-mod-pelias#33