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Christopher Tubbs updated ACCUMULO-884: --------------------------------------- Assignee: Keith Turner > Take advantage of short circuit read for local files > ---------------------------------------------------- > > Key: ACCUMULO-884 > URL: https://issues.apache.org/jira/browse/ACCUMULO-884 > Project: Accumulo > Issue Type: Improvement > Components: docs > Reporter: Billie Rinaldi > Assignee: Keith Turner > Fix For: 1.5.0 > > > This is a new feature in hadoop 1.0.x and some versions of 0.22 and 0.23. It > allows a client to read directly from disk instead of through a DataNode when > the data is stored locally. Enabling it involves setting two configuration > parameters, the first in hdfs-site.xml and the second in accumulo-site.xml. > We should make sure this works with Accumulo and recommend it in the > documentation. > - dfs.block.local-path-access.user is the key in datanode configuration to > specify the user allowed to do short circuit read. > - dfs.client.read.shortcircuit is the key to enable short circuit read at the > client side configuration. > See HDFS-2246 and http://hbase.apache.org/book/perf.hdfs.configs.html for > more information. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira