build_index bug

[zhudayong1987]

build_index bug
build_index fails when multiple threads are searching for landsat-c2ard-sr in the extension

Output
[WinError 32] 另一个程序正在使用此文件，进程无法访问。: 'C:\Users\67185\.config\eodag\.index\_MAIN_1.toc'
[Errno 2] No such file or directory: 'C:\Users\67185\.config\eodag\.index\MAIN_41feoch9twz5zn60.seg'
[Errno 2] No such file or directory: 'C:\Users\67185\.config\eodag\.index\MAIN_41feoch9twz5zn60.seg'
[Errno 2] No such file or directory: 'C:\Users\67185\.config\eodag\.index\MAIN_41feoch9twz5zn60.seg'
[Errno 2] No such file or directory: 'C:\Users\67185\.config\eodag\.index\MAIN_41feoch9twz5zn60.seg'
[Errno 2] No such file or directory: 'C:\Users\67185\.config\eodag\.index\MAIN_41feoch9twz5zn60.seg'

Environment:

• Python version: 3.9
• EODAG version: 2.12.1

[sbrunato]

Hello @zhudayong1987 , to avoid conflicts between threads while accessing index file, you may use multiprocessing instead with disctinct EODAG_CFG_DIR environment variable set for each process