[SPARK-7558] Demarcate tests in unit-tests.log (1.4)
This includes the following commits:
original: 9eb222c
hotfix1: 8c99793
hotfix2: a4f2412
scalastyle check: 609c492
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Original patch #6441
Branch-1.3 patch #6602
Author: Andrew Or and...@databricks.com
Closes #6598 from
[SPARK-7558] Demarcate tests in unit-tests.log
Right now `unit-tests.log` are not of much value because we can't tell where
the test boundaries are easily. This patch adds log statements before and after
each test to outline the test boundaries, e.g.:
```
= TEST OUTPUT FOR
