Github user RongGu commented on the pull request:
https://github.com/apache/incubator-spark/pull/468#discussion_r9776920
Hi, Patrick. The same as diskStore and memoryStore, the tachyonStore is
not an Iterable class here. So, I am afraid we can not use foreach or the map(
in the comment below) functions here. I think it's kind of wired to make it
iterable, because each executor only has one tachyonStore itself.
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