mesos/spark — pull request #182 by HarveyFeng (2012-08-29 23:49:08+00:00)
Title: Add a limit on the number of parallel fetches in the reduce stage

Made the numer of parallel fetches per reduce task
System.getProperty("spark.default.parallelism", "8")
by default, but it can be set by setting the 'spark.blockManager.parallelFetches' property.