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(Updated 2011-12-14 19:50:29.358317) Review request for giraph. Changes ------- Forgot a few important files (VertexIdMessages.java and VertexIdMessagesList.java) Summary ------- Added new putVertexIdMessagesList RPC and supporting classes (VertexIdMessages and VertexIdMessagesList) to reduce the total number of RPCs during a flush. This improves the number of RPC / sec and overall I/O bandwidth. The amount of batching is done by the total number of messages and is configurable at runtime (default of 5000, weighted toward helping smaller messages). I have noted some performance results in https://issues.apache.org/jira/browse/GIRAPH-57 (between 25 - 1075 percent improvements). Also, while tinkering with BasicRPCCommunications, notices inconsistent spaces between 'synchronized' and '('. Removed spaces and standardized in the CODE_CONVENTIONS. This addresses bug GIRAPH-57. https://issues.apache.org/jira/browse/GIRAPH-57 Diffs (updated) ----- http://svn.apache.org/repos/asf/incubator/giraph/trunk/CODE_CONVENTIONS 1213849 http://svn.apache.org/repos/asf/incubator/giraph/trunk/src/main/java/org/apache/giraph/comm/ArrayListWritable.java 1213849 http://svn.apache.org/repos/asf/incubator/giraph/trunk/src/main/java/org/apache/giraph/comm/BasicRPCCommunications.java 1214406 http://svn.apache.org/repos/asf/incubator/giraph/trunk/src/main/java/org/apache/giraph/comm/CommunicationsInterface.java 1213849 http://svn.apache.org/repos/asf/incubator/giraph/trunk/src/main/java/org/apache/giraph/comm/VertexIdMessages.java PRE-CREATION http://svn.apache.org/repos/asf/incubator/giraph/trunk/src/main/java/org/apache/giraph/comm/VertexIdMessagesList.java PRE-CREATION http://svn.apache.org/repos/asf/incubator/giraph/trunk/src/main/java/org/apache/giraph/graph/GiraphJob.java 1213849 Diff: https://reviews.apache.org/r/3201/diff Testing ------- Passed local and Hadoop unittests. Used the RandomMessageBenchmark on a small cluster. Thanks, Avery