jerryshao bb870e72f4 [SPARK-5523] [CORE] [STREAMING] Add a cache for hostname in TaskMetrics to decrease the memory usage and GC overhead ... Hostname in TaskMetrics will be created through deserialization, mostly the number of hostname is only the order of number of cluster node, so adding a cache layer to dedup the object could reduce the memory usage and alleviate GC overhead, especially for long-running and fast job generation applications like Spark Streaming. Author: jerryshao <saisai.shao@intel.com> Author: Saisai Shao <saisai.shao@intel.com> Closes #5064 from jerryshao/SPARK-5523 and squashes the following commits: 3e2412a [jerryshao] Address the comments b092a81 [Saisai Shao] Add a pool to cache the hostname		2015-07-14 19:54:02 -07:00
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src	[SPARK-5523] [CORE] [STREAMING] Add a cache for hostname in TaskMetrics to decrease the memory usage and GC overhead	2015-07-14 19:54:02 -07:00
pom.xml	[SPARK-7078] [SPARK-7079] Binary processing sort for Spark SQL	2015-07-10 16:44:51 -07:00