ragflow

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euvre 9a785b26bd fix: change file size column from IntegerField to BigIntegerField to support files > 2GB (#14148 )

### What problem does this PR solve?

Fixes #6034

Changes the `size` field in both `Document` and `File` models from
`IntegerField` (32-bit, max ~2GB) to `BigIntegerField` (64-bit, max
~9.2EB), and adds corresponding database migrations.

## Problem

When uploading a file larger than 2GB, the `size` value overflows a
32-bit signed integer (max 2,147,483,647). This causes:

- The stored `size` wraps around to an incorrect value (e.g., a 3GB file
shows as 2,097,152 KB in File Management).
- Subsequent file operations (e.g., download) fail because the corrupted
size leads to invalid storage lookups.

## Changes

- `Document.size`: `IntegerField` → `BigIntegerField`
- `File.size`: `IntegerField` → `BigIntegerField`
- Added `alter_db_column_type` migrations in `migrate_db()` for both
`document.size` and `file.size` columns to ensure existing deployments
are upgraded automatically.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

Signed-off-by: noob <yixiao121314@outlook.com>

2026-04-16 15:43:29 +08:00