Unsupported spark function list [please leave a comment if you plan to pick some]

[FelixYBW]

Description

#4039 [VL] Unsupported spark function list [please leave a comment if you plan to pick some]
#6817 [CH] Unsupported spark function list [please leave a comment if you plan to pick some]

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Issues found in Velox Fuzz tests: facebookincubator/velox#13042

[philo-he]

Nice! This is better for both backends. @taiyang-li, @baibaichen, please note this issue is pined at the top of GitHub issue page.

[zhouyuan]

Related issues found in Spark fuzz test in Velox:
facebookincubator/velox#13042

Cc: @rui-mo