Github user HuJiayin commented on the pull request:
https://github.com/apache/spark/pull/8546#issuecomment-141855212
On the other hand, newcenters will cause a sudden increasing of memory
usage, though call clear immediately, but i think it waits for GC to clear.
Newcenter will still merge in some duplicate centers. I heard some clusters in
a large internet company here set 4-5G yarn executor memory/node and has
related usage. You can give a instruction if they meet similar issue.
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