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[Doc]Update filemanager.md #12401

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Oct 24, 2022
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[Doc]Update filemanager.md #12401

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femiiii Oct 24, 2022
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Update filemanager.md
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@femiiii
femiiii authored Oct 24, 2022
commit 4521a58436f24adca64ab1123577c26fc9ab1df1
4 changes: 2 additions & 2 deletions docs/using_starrocks/filemanager.md
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Expand Up @@ -33,5 +33,5 @@ You can execute the DROP FILE statement to delete a file. For more information,

## How an FE and a BE use a file

- FE: The SmallFileMgr class stores the data related to the file in the specified directory of the FE. Then the SmallFileMgr class returns a local file path for the FE to use the file.
- BE: The BE calls the **/api/get_small_file API** (HTTP) to download the file to its specified directory and record the information of the file. When the BE requests to use the file, the BE checks whether the file has been downloaded and then verifies the file. If the file pass the verification, the path of the file is returned. If the file fails the verification, the file is deleted and re-downloaded from the FE. When a BE restarts, it preloads the downloaded file into its memory.
- **F**E: The SmallFileMgr class stores the data related to the file in the specified directory of the FE. Then the SmallFileMgr class returns a local file path for the FE to use the file.
- **BE**: The BE calls the **/api/get_small_file API** (HTTP) to download the file to its specified directory and record the information of the file. When the BE requests to use the file, the BE checks whether the file has been downloaded and then verifies the file. If the file pass the verification, the path of the file is returned. If the file fails the verification, the file is deleted and re-downloaded from the FE. When a BE restarts, it preloads the downloaded file into its memory.