What are some promising open-source alternatives to Hadoop MapReduce for map/reduce?

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Spark is an open-source platform that enables fast real-time data processing, up to 100 times faster than Hadoop's MapReduce. It can be run on various platforms, such as Apache Mesos, EC2, and Hadoop - either from a cloud or a dedicated cluster. This makes it well-suited for machine learning-based a...
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Sparkis an open-source platform that enables fast real-time data processing, up to 100 times faster than Hadoop's MapReduce. It can be run on various platforms, such as Apache Mesos, EC2, and Hadoop - either from a cloud or a dedicated cluster. This makes it well-suited for machine learning-based applications. read less
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Apache Spark is an open-source, distributed computing system known for its speed and ease of use in big data processing. Unlike Hadoop's MapReduce, Spark provides in-memory processing, significantly accelerating data processing tasks.
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Apache Spark is an open-source, distributed computing system known for its speed and ease of use in big data processing. Unlike Hadoop's MapReduce, Spark provides in-memory processing, significantly accelerating data processing tasks.
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