apache/spark — pull request #338 by dgshep (2014-04-06 21:31:15+00:00)
Title: In the contex of SPARK-1337: Make sure that all metadata fields are properly cleaned

While working on spark-1337 with @pwendell, we noticed that not all of the metadata maps in JobProgessListener were being properly cleaned. This could lead to a (hypothetical) memory leak issue should a job run long enough. This patch aims to address the issue.