[ http://issues.apache.org/jira/browse/HADOOP-307?page=comments#action_12417951 ]
eric baldeschwieler commented on HADOOP-307: -------------------------------------------- What configuration options does it have? Can you set an arbitrary number of map and reduce tasks? Do you validate that the right bytes get sent through the system? Set the number of steps? > Many small jobs benchmark for MapReduce > --------------------------------------- > > Key: HADOOP-307 > URL: http://issues.apache.org/jira/browse/HADOOP-307 > Project: Hadoop > Type: Task > Components: mapred > Reporter: Sanjay Dahiya > Priority: Minor > > A benchmark that runs many small MapReduce tasks in sequence. A single map > reduce implementation is used, it is invoked multiple times with input as the > output from previous run. The input to first Map is a TextInputFormat ( a > text file with few hundred KBs). Input records are passed to output without > much processing. The idea is to benchmark the time taken by initialization of > Mapper and Reducer. An initial prototyping on a single machine with 20 MR > tasks in sequence took ~47 seconds per task. Looking for suggestions on what > else can be included in the benchmark. -- 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
