Wenchen Fan f561a76b2f [SPARK-20548][FLAKY-TEST] share one REPL instance among REPL test cases ... ## What changes were proposed in this pull request? `ReplSuite.newProductSeqEncoder with REPL defined class` was flaky and throws OOM exception frequently. By analyzing the heap dump, we found the reason is that, in each test case of `ReplSuite`, we create a REPL instance, which creates a classloader and loads a lot of classes related to `SparkContext`. More details please see https://github.com/apache/spark/pull/17833#issuecomment-298711435. In this PR, we create a new test suite, `SingletonReplSuite`, which shares one REPL instances among all the test cases. Then we move most of the tests from `ReplSuite` to `SingletonReplSuite`, to avoid creating a lot of REPL instances and reduce memory footprint. ## How was this patch tested? test only change Author: Wenchen Fan <wenchen@databricks.com> Closes #17844 from cloud-fan/flaky-test.		2017-05-10 00:09:35 +08:00
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main/scala/org/apache/spark/repl	[SPARK-20548][FLAKY-TEST] share one REPL instance among REPL test cases	2017-05-10 00:09:35 +08:00
test/scala/org/apache/spark/repl	[SPARK-20548][FLAKY-TEST] share one REPL instance among REPL test cases	2017-05-10 00:09:35 +08:00