kaijchen opened a new pull request, #55864:
URL: https://github.com/apache/doris/pull/55864
### What problem does this PR solve?
Related PR: #25816
Problem Summary:
This commit refactors two common error messages reported by the CSV reader
to be clearer, more concise, and less redundant. This improves log readability
and helps users diagnose data loading issues more efficiently.
1. **Column Count Mismatch Error:**
The previous error was excessively verbose, printing a large data
buffer. It is now a single, direct line stating the problem with the expected
vs. actual counts and a truncated sample.
* **Before:**
`actual column number in csv file is more than schema column
number.actual number: 19, schema column number: 18; ... result values:[...VERY
LONG DATA DUMP...]`
* **After:**
`Column count mismatch: expected 18, but found 19 (sep:|, delim:\n).
Src line: 57|2023-08-19|TRUE|...`
2. **Invalid File Encoding Error:**
The error for non-UTF-8 files was repetitive. It is now a single, direct
statement of the requirement.
* **Before:**
`Unable to display, only support csv data in utf8 codec, please
check the data encoding`
* **After:**
`Invalid file encoding: all CSV files must be UTF-8 encoded`
### 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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