The best replacement for mapreduce is hadoop.

The best alternatives to mapreduce are rated as following:
★★★★★  hadoop
★★★★  mpi
★★★★  rdbms
★★★  yarn
★★★  mapred
★★★  spark
★★  nosql
★★  hive
★  divide and conquer
★  parallel dbms
★  bsp
★  pig
★  parallel databases
  aggregation

Your alternative for mapreduce is not listed? Suggest!
Speaking about mapreduce, one probably shouldn't forget about hadoop.

Other search terms related to mapreduce and their ratings are:
★★★★★ hadoop
★★★★ hbase
★ hive
hdfs
You have in mind a companion for mapreduce and it is not yet here? Propose!



Google Trends

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mapreduce
hadoop
mpi