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Apache Accumulo for Developers by Guðmundur Jón Halldórsson

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Accumulo performance

Accumulo uses Hadoop HDFS as a filesystem and ZooKeeper as a coordinator. If the problem isn't in Hadoop or ZooKeeper, we need to look at Accumulo. By now, you should be monitoring the logs with Graylog2 or similar, and monitoring the Accumulo TabletServer(s) and the Accumulo Master with Ganglia.

Accumulo has fewer configuration values than Hadoop, but the same rule applies to the configuration of JVM.

Tuning parameters for accumulo-site.xml

The changes recommended in accumulo-site.xml are shown in the following table:

Configuration parameter

Default value

Comment

instance.zookeeper.host

localhost:2181

Here, ZooKeeper servers are separated by a comma.

instance.dfs.dir

/user/accumulo/accumulo

This refers to the ...

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