Why isn't Hadoop implemented using MPI?

Why isn't Hadoop implemented using MPI?

tcp hadoop protocol-buffers mpi distributed-computing

hadoop

Easiest way to install Python dependencies on Spark executor nodes?

hadoop dependencies apache-spark shared-libraries distributed-computing

hadoop

How to write to CSV in Spark

file csv hadoop apache-spark distributed-computing

hadoop

Would Spark unpersist the RDD itself when it realizes it won't be used anymore?

apache-spark hadoop rdd distributed-computing

hadoop

Change File Split size in Hadoop

java hadoop mapreduce distributed-computing

hadoop

Active tasks is a negative number in Spark UI

python apache-spark hadoop distributed-computing

hadoop

Any Open Source Pregel like framework for distributed processing of large Graphs?

language-agnostic graph hadoop distributed-computing

hadoop

Search/Find a file and file content in Hadoop

file filesystems hadoop distributed distributed-computing

hadoop

Clarification of use-cases for Hadoop versus RabbitMQ+Celery

python hadoop rabbitmq celery distributed-computing

hadoop

what is a data serialization system?

hadoop distributed-computing data-serialization

hadoop

How to balance my data across the partitions?

python hadoop apache-spark distributed-computing bigdata

hadoop

Where do I start with distributed computing?

hadoop mapreduce distributed-computing

hadoop

MapReduce Linear Programming

hadoop mapreduce distributed-computing linear-programming

hadoop

Hadoop: binding multiple IP addresses to a cluster NameNode

java hadoop network-programming cluster-computing distributed-computing

hadoop

Distributed Job scheduling, management, and reporting

java hadoop distributed-computing job-scheduling

hadoop