问一下,这是什么回事
2021-06-01 22:07:44] INFO: [smmdb] fetching 400 Difficulty.Easy courses
[2021-06-01 22:07:55] INFO: [smmdb] downloaded 606cb1b44e02cacc90493963 (index: 10000000000)
[2021-06-01 22:08:03] INFO: [smmdb] downloaded 6051ff0f66a4d6eea1de3dd9 (index: 10000000001)
[2021-06-01 22:08:07] INFO: [smmdb] downloaded 6051173866a4d6adacde3dd2 (index: 10000000002)
[2021-06-01 22:08:11] INFO: [smmdb] downloaded 5ff8894f5af0746c30d05be7 (index: 10000000003)
[2021-06-01 22:08:14] INFO: [smmdb] downloaded 5f8cb1574fa43f772f1879ce (index: 10000000004)
[2021-06-01 22:08:17] INFO: [smmdb] downloaded 5f8cb07e4fa43f89941879cd (index: 10000000005)
[2021-06-01 22:08:17] INFO: [smmdb] ASH compression failure for www/smmdb/tmp/course000/course_data.cdt
[2021-06-01 22:08:21] INFO: [smmdb] downloaded 5f4c6452d728898042d56346 (index: 10000000005)
[2021-06-01 22:08:26] INFO: [smmdb] downloaded 5f2a5d50e762cf56a0ea6207 (index: 10000000006)
[2021-06-01 22:08:34] INFO: [smmdb] downloaded 5f05d89a77490f241def2350 (index: 10000000007)
[2021-06-01 22:08:41] INFO: [smmdb] downloaded 5db5923e0c7ec6e3b1299ba5 (index: 10000000008)
[2021-06-01 22:08:45] INFO: [smmdb] downloaded 5db5920e0c7ec60d76299ba0 (index: 10000000009)
[2021-06-01 22:08:49] INFO: [smmdb] downloaded 5e5932ebcf9bb77d4786fa76 (index: 10000000010)
[2021-06-01 22:08:52] INFO: [smmdb] downloaded 5d82029a1d890a48f181298b (index: 10000000011)
[2021-06-01 22:08:55] INFO: [smmdb] downloaded 5d80eac31d890a3077812969 (index: 10000000012)
[2021-06-01 22:08:59] INFO: [smmdb] downloaded 5d41e2be0d86e234afd7ff88 (index: 10000000013)
[2021-06-01 22:09:03] INFO: [smmdb] downloaded 5d260aec59ca3e8e6765cb14 (index: 10000000014)
[2021-06-01 22:09:07] INFO: [smmdb] downloaded 5d0e506519bb790a7156f0ca (index: 10000000015)
[2021-06-01 22:09:10] INFO: [smmdb] downloaded 5c46132416d7771ca4e8f018 (index: 10000000016)
[2021-06-01 22:09:15] INFO: [smmdb] downloaded 5c0f7151423dd805530dc6e9 (index: 10000000017)
[2021-06-01 22:09:18] INFO: [smmdb] downloaded 5b7084ec82878ab5a45626d0 (index: 10000000018)
[2021-06-01 22:09:21] INFO: [smmdb] downloaded 5b7080aa82878a64d15626c2 (index: 10000000019)