Github user liancheng commented on the pull request: https://github.com/apache/spark/pull/6978#issuecomment-114758469 @yhuai Somehow I can partly reproduce this issue locally: no log in unit-tests.log, but didn't observed the timeout. After resorting to `println` rather than `logInfo`, I found out that one test case is trying to download Hive dependencies via Ivy. Opening this PR to see whether we can figure out what happens on Jenkins.
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