project 2c中出现 gen snapshot fail的情况

在跑2c用例时,打印的log出现了这种error或者warn的日志,虽然test pass了,但代码应该是有问题的,请问一下出现这种问题大概是为啥呢?
[error] failed to generate snapshot!!!, [regionId: 1, err : stat /tmp/test-raftstore019092993/snap/gen_1_5_5_default.sst.tmp: no such file or directory]

[warning] failed to load existent snapshot meta when try to build /tmp/test-raftstore209586016/snap/gen_1_5_5_(default|write|lock).sst: invalid CF number of snapshot meta, expect 3, got 0

[warning] failed to delete snapshot /tmp/test-raftstore209586016/snap/gen_1_5_5_(default|write|lock).sst because it’s already registered elsewhere

[error] failed to generate snapshot!!!, [regionId: 1, err : invalid CF number of snapshot meta, expect 3, got 0]

2c的用例还全都pass了:flushed:

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这是因为请求快照的次数太多了。

搬运一下答案:stuck_out_tongue_winking_eye:

[经验分享] 优化 snapshot 创建过多现象