[ http://issues.apache.org/jira/browse/HADOOP-307?page=all ]
Sanjay Dahiya updated HADOOP-307:
---------------------------------
Attachment: patch.txt
The only reason to keep it separate is we dont want these jar files already in
classpath on all nodes. Part of the benchmark's goal is to estimate the
overhead in transfering the jar file through HDFS. Also there is bin dir in
this for scripts to run the benchmark. If this doesnt conflict with existing
examples the we can put it there as well.
Updating the patch, it now generates excel friendly CSV output to plot graphs
etc.
> 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
> Attachments: patch.txt
>
> 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
