qidaye opened a new pull request, #29420:
URL: https://github.com/apache/doris/pull/29420

   ## Proposed changes
   
   Issue Number: close #29417
   > 
[ignore_above](https://www.elastic.co/guide/en/elasticsearch/reference/current/ignore-above.html)
   Do not index any string longer than this value. Defaults to 2147483647 so 
that all values would be accepted. Please however note that default dynamic 
mapping rules create a sub keyword field that overrides this default by setting 
ignore_above: 256.
   
   When the field value is longer than the limitation, we will get an empty 
result.
   The solution is turn off `enable_docvalue_scan`, to get data from `_source` 
field.
   
   <!--Describe your changes.-->
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at 
[d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you 
chose the solution you did and what alternatives you considered, etc...
   
   


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