[Docs] Add migration note about expanded fields limit #34920
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Adds a note to warn users about the limit introduced in elastic#26541.
cbuescher added >docs 
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| Pinging @elastic/es-search-aggs |
cbuescher changed the title 
jimczi requested changes Oct 26, 2018
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Thanks @cbuescher . I left some comments
| Executing queries that use automatic expansion of fields (e.g. `query_string`, `simple_query_string` | ||
| or `multi_match`) can have performance issues for indices with a large numbers of fields. | ||
| To safeguard against this, a fixed limit of a maximum of 1024 fields has been introduced | ||
| for queries using the "all fields" mode ("default_field": "*"). |
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It is applied to any expansion so not only * but also a* or a,b,c,d*
| | ||
| Executing queries that use automatic expansion of fields (e.g. `query_string`, `simple_query_string` | ||
| or `multi_match`) can have performance issues for indices with a large numbers of fields. | ||
| To safeguard against this, a fixed limit of a maximum of 1024 fields has been introduced |
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an hard limit of 1024 fields ?
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| @jimczi I updated the text according to your comments. Would you be able to take another look? |
jimczi approved these changes Oct 29, 2018
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Thanks for updating @cbuescher !
kcm pushed a commit that referenced this pull request Oct 30, 2018
Adds a note to warn users about the limit introduced in #26541.
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Adds a note to warn users about the limit introduced in #26541.