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Sean Busbey commented on ACCUMULO-884: -------------------------------------- [~mridley], would you be willing to take on the documentation changes from this ticket? Your results would make a good blog post, either directly on the accumulo project blog or syndicated there. > Insight into short circuit read for local files > ----------------------------------------------- > > Key: ACCUMULO-884 > URL: https://issues.apache.org/jira/browse/ACCUMULO-884 > Project: Accumulo > Issue Type: Sub-task > Components: docs > Reporter: Billie Rinaldi > > 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 was sent by Atlassian JIRA (v6.3.4#6332)