
Contributed by Steve Loughran. This patch * changes the default for the staging committer to append, as we get for the classic FileOutputFormat committer * adds a check for the dest path being a file not a dir * adds tests for this * Changes AbstractCommitTerasortIT. to not use the simple parser, so fails if the file is present. Change-Id: Id53742958ed1cf321ff96c9063505d64f3254f53