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[ISSUE-328] Cleanup unused shuffle servers after stage completed#334
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Overall LGTM. Left some minor comments.
roryqi
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LGTM. Thanks @xianjingfeng
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What changes were proposed in this pull request?
Cleanup unused shuffle servers after stage completed
Why are the changes needed?
If there are many stages in one applicaiton, spark driver will send heartbeat to every shuffle servers, and it may cause app expired in shuffle server side. And if we support decommission in the future, it will cause shuffle difficult to exit. #328
Does this PR introduce any user-facing change?
No
How was this patch tested?
Added