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Asked: 2026-05-29T05:50:16+00:00

http://code.google.com/p/appengine-mapreduce/ mentions that it can control the speed of execution, but I can’t figure

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http://code.google.com/p/appengine-mapreduce/ mentions that it can control the speed of execution, but I can’t figure out how. It would make sense to create a task queue for a mapper job and control the speed from there, but I don’t see how to specify which queue to use.

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  1. Editorial Team

    (Thanks to Chris for the pointer, but it took a bit of digging after that to find the exact parameter.)

    From http://code.google.com/p/appengine-mapreduce/wiki/UserGuideJava add this to your mapreduce.xml configuration element to limit the number of entities processed per second:

    <property>
    <name>mapreduce.mapper.inputprocessingrate</name>
    <value>4</value>
</property>
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