gnehil opened a new pull request, #18438:
URL: https://github.com/apache/doris/pull/18438
# Proposed changes
Issue Number: close #xxx
## Problem summary
When the dynamic parameter in the mapping is set to null, getting the root
schema will cause ClassCastException
example:
```json
{
"test_index": {
"mappings": {
"dynamic": "false",
"properties": {
"time": {
"type": "long"
},
"type": {
"type": "keyword"
},
"userId": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword"
}
}
}
}
}
}
}
```
When the mapping structure is as above
The exception that occurs in the latest version is
`java.lang.ClassCastException: com.fasterxml.jackson.databind.node.TextNode
cannot be cast to com.fasterxml.jackson.databind.node.ObjectNode`,
and for elder version is `java.lang.ClassCastException: java.lang.String
cannot be cast to org.json.simple.JSONObject`
Describe your changes.
## Checklist(Required)
* [ ] Does it affect the original behavior
* [ ] Has unit tests been added
* [ ] Has document been added or modified
* [ ] Does it need to update dependencies
* [ ] Is this PR support rollback (If NO, please explain WHY)
## 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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