morningman opened a new pull request, #61236:
URL: https://github.com/apache/doris/pull/61236
### What problem does this PR solve?
When an Elasticsearch field is mapped as keyword/text but the actual data
stored is an array (which is valid in ES),
Doris was throwing: 'Expected value of type: STRING; but found type: Array'
This fix serializes the array to a JSON string representation instead of
throwing an error,
which is consistent with how other non-string types (Numbers, Objects) are
already handled.
Fixed two code paths in es_scroll_parser.cpp:
1. fill_columns() - main _source parsing path
2. handle_value() - array element processing path
Also added regression test and test data for this scenario.
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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