[UT] failed in index scan

[Shylock-Hg]

Please check the FAQ documentation before raising an issue

Describe the bug (required)

See detail in https://github.com/vesoft-inc/nebula/runs/4529528865?check_suite_focus=true

Your Environments (required)

• OS: uname -a
• Compiler: g++ --version or clang++ --version
• CPU: lscpu
• Commit id (e.g. a3ffc7d8)

How To Reproduce(required)

Steps to reproduce the behavior:

1. Step 1
2. Step 2
3. Step 3

Expected behavior

Additional context

[Sophie-Xie]

It did not reappear, close it first, and reopen it if necessary.