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[CELEBORN-1574] Speed up unregister shuffle by batch processing

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### What changes were proposed in this pull request? In order to speed up the resource releasing，this PR Unregister shuffle in batch; ### Does this PR introduce _any_ user-facing change?...

### What changes were proposed in this pull request? ### Why are the changes needed? ### Does this PR introduce _any_ user-facing change? ### How was this patch tested?

### What changes were proposed in this pull request? Fix the pauseTime metrics count error. ### Why are the changes needed? Assume that 0 is NONE PAUSED status, 1 is...