File Type | Extension name. | Description |
CSV | .csv | Comma-separated structured text, a common export format |
JSON | .json | JSON document; supports three layout modes: a single object, an array, and multiple objects (one per line). |
Avro | .avro | Self-describing binary row-based format that requires no additional field specification |
Parquet | .parquet | Self-describing binary columnar format that requires no additional field specification. |
Text | .txt | Plain text file with custom delimiters |
XML | .xml | XML document. A row tag is required (the system will infer it automatically). |
Constraint item | Limit | Validation message |
Number of files | At least 1, up to 10 | You can upload up to 10 files. |
Total file size | Total size of all files ≤ 2 GB. | You can upload files up to 2 GB in total. |
Original field | Processed Field | Rule |
Space | Clear | Clear a field name if it contains only spaces; if all field names are empty, assign c_1 and c_2 in sequence. |
Chinese | Pinyin | For example, "Name" → mingcheng |
Invalid characters | _ | For example, a&b → a_b |
/, =, and -.Rule | Description |
First character | Must be a letter, digit, or underscore. |
Character range | Only letters, digits, underscores, /, =, and - are allowed. |
Length | No more than 64 characters. |
Scenario | Note. | Handling Recommendation |
File quantity exceeded | You can upload up to 10 files. | Delete some files and retry. |
Total capacity exceeded | You can upload files up to 2 GB in total. | Split files or keep only the necessary subset. |
The file type is not supported. | Unable to select files. | Check whether the file type is in the supported list or convert the file type first. |
Insufficient permissions | No permission to perform the upload service. | Check whether module permissions or service resource permissions have changed. For details, see Member and Permission Management. |
Fallback error | Upload failed. {Error details}. | Troubleshoot based on the specific error description. |
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