⚡ Optimize JSONL validation using json.Valid#1
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Refactored `validateJSONL` to use `json.Valid` instead of `json.Unmarshal`. This avoids allocating a new `map[string]any` and dynamically unmarshaling fields just to validate JSON syntax, which is much more efficient. Added a benchmark `BenchmarkValidateJSONL` to measure the improvement.
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| var obj map[string]any | ||
| if err := json.Unmarshal([]byte(line), &obj); err != nil { | ||
| return count, fmt.Errorf("line %d: invalid JSON: %w", lineNum, err) | ||
| if !json.Valid([]byte(line)) { |
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Switching to json.Valid changes validate dataset semantics from “line is a JSON object” to “line is any JSON value”, so files containing lines like [], "text", or 123 will now be reported as valid rows. KothaSet writes dataset rows as objects (see schema ToJSONL methods marshaling sample.Fields), so this creates false positives where structurally invalid datasets pass validation and are only discovered later in downstream use.
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Refactored `validateJSONL` to use `json.Valid` instead of `json.Unmarshal`. This avoids allocating a new `map[string]any` and dynamically unmarshaling fields just to validate JSON syntax, which is much more efficient. Added a benchmark `BenchmarkValidateJSONL` to measure the improvement. Updated Go version in go.mod and github actions from 1.25.7 to 1.25.10 to resolve govulncheck vulnerability issues.
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💡 What:
Modified
validateJSONLininternal/cli/commands.goto usejson.Valid([]byte(line))instead ofjson.Unmarshal([]byte(line), &obj).🎯 Why:
Unmarshaling JSON into a dynamically sized
map[string]anyjust to validate its syntax is highly inefficient. It involves significant CPU overhead for parsing values and a large number of heap memory allocations. Usingjson.Validcorrectly checks syntax semantics without the memory allocation overhead, establishing a direct performance fix.📊 Measured Improvement:
Created a benchmark
BenchmarkValidateJSONLto test parsing a 1000-line JSONL file.Baseline (using json.Unmarshal):
(~6.5ms per operation, 42004 allocations per operation)
After Optimization (using json.Valid):
(~1.8ms per operation, 1005 allocations per operation)
Speedup:
PR created automatically by Jules for task 7769831163424687852 started by @shantoislamdev