[ https://issues.apache.org/jira/browse/HADOOP-193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Konstantin Shvachko reassigned HADOOP-193: ------------------------------------------ Assignee: Konstantin Shvachko > DFS i/o benchmark. > ------------------ > > Key: HADOOP-193 > URL: https://issues.apache.org/jira/browse/HADOOP-193 > Project: Hadoop Common > Issue Type: Test > Components: fs > Reporter: Konstantin Shvachko > Assignee: Konstantin Shvachko > Fix For: 0.2.0 > > Attachments: IOBenchmark.patch > > > DFS i/o benchmark is a map-reduce based test that measures performance of the > cluster for reads and writes. > This is an evolved version of HADOOP-72, and HADOOP-95 test. > This test writes into or reads from a specified number of files. > File size is specified as a parameter to the test. > Each file is processed in a separate map task. > The unique reducer then collects stats. > Finally, the following information is displayed > # read or write test > # date and time the test finished > # number of files processed > # total number of bytes processed > # throughput in mb/sec (total number of bytes / sum of processing times) > # average i/o rate in mb/sec per file > # standard i/o rate deviation > I included the test into the AllTestDriver. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org