DFS i/o benchmark.
------------------
Key: HADOOP-193
URL: http://issues.apache.org/jira/browse/HADOOP-193
Project: Hadoop
Type: Test
Components: fs
Reporter: Konstantin Shvachko
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 is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
http://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see:
http://www.atlassian.com/software/jira
