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[SPARK-40267][DOC] Add description for ExecutorAllocationManager metrics
What changes were proposed in this pull request?
Add description for ExecutorAllocationManager metrics
Why are the changes needed?
Some ExecutorAllocationManager metrics are hard to know what stands for just from metric name.
Does this PR introduce any user-facing change?
no
How was this patch tested?
No code change.
@dongjoon-hyun Could you help take a look?
Can one of the admins verify this patch?
@Ngone51 Could you help take a look?
We're closing this PR because it hasn't been updated in a while. This isn't a judgement on the merit of the PR in any way. It's just a way of keeping the PR queue manageable. If you'd like to revive this PR, please reopen it and ask a committer to remove the Stale tag!