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[HDFS-232] Cross-system causal tracing within Hadoop - HDFS - [issue]
...Much of Hadoop's behavior is client-driven, with clients responsible for contacting individual datanodes to read and write data, as well as dividing up work for map and reduce tasks.  I...
http://issues.apache.org/jira/browse/HDFS-232    Author: George Porter, 2014-07-18, 23:37
[HDFS-211] Support for options within the Datanode Transfer protocol - HDFS - [issue]
...This proposal is to extend the DataNode Transfer protocol (described in DataNode.java lines 916 - 995) to support "options", in the spirit of IP or TCP options.  This should make this p...
http://issues.apache.org/jira/browse/HDFS-211    Author: George Porter, 2014-07-18, 23:25
[HDFS-347] DFS read performance suboptimal when client co-located on nodes with data - HDFS - [issue]
...One of the major strategies Hadoop uses to get scalable data processing is to move the code to the data.  However, putting the DFS client on the same physical node as the data blocks it...
http://issues.apache.org/jira/browse/HDFS-347    Author: George Porter, 2014-07-17, 18:18
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