mapreduce 99

  1. Good MapReduce examples
  2. Simple explanation of MapReduce?
  3. Java8: HashMap<X, Y> to HashMap<X, Z> using Stream / Map-Reduce / Collector
  4. Chaining multiple MapReduce jobs in Hadoop
  5. How does Hadoop process records split across block boundaries?
  6. Name node is in safe mode. Not able to leave
  7. Is there a .NET equivalent to Apache Hadoop?
  8. How does the MapReduce sort algorithm work?
  9. Map and Reduce in .NET
  10. What is the purpose of shuffling and sorting phase in the reducer in Map Reduce Programming?
  11. What is Map/Reduce?
  12. When do reduce tasks start in Hadoop?
  13. merge output files after reduce phase
  14. Integration testing Hive jobs
  15. Does MongoDB's $in clause guarantee order
  16. Container is running beyond memory limits
  17. MongoDB Stored Procedure Equivalent

  18. Is Mongodb Aggregation framework faster than map/reduce?
  19. Can apache spark run without hadoop?
  20. Where does hadoop mapreduce framework send my System.out.print() statements ? (stdout)
  21. Find all duplicate documents in a MongoDB collection by a key field
  22. Is it better to use the mapred or the mapreduce package to create a Hadoop Job?
  23. What is Hive: Return Code 2 from org.apache.hadoop.hive.ql.exec.MapRedTask
  24. MongoDB: Terrible MapReduce Performance
  25. How to write 'map only' hadoop jobs?
  26. Difference between Fork/Join and Map/Reduce
  27. Reduce a key-value pair into a key-list pair with Apache Spark
  28. Mapreduce program examples for beginners
  29. data block size in HDFS, why 64MB?
  30. Explode the Array of Struct in Hive
  31. MongoDB aggregation comparison: group(), $group and MapReduce
  32. How to get the input file name in the mapper in a Hadoop program?
  33. Hadoop one Map and multiple Reduce
  34. hadoop.mapred vs hadoop.mapreduce?
  35. gzip support in Spark
  36. In MongoDB mapreduce, how can I flatten the values object?
  37. Hadoop DistributedCache is deprecated - what is the preferred API?
  38. What are SUCCESS and part-r-00000 files in hadoop
  39. Best way to do one-to-many “JOIN” in CouchDB
  40. Hadoop truncated/inconsistent counter name
  41. What type of problems can mapreduce solve?
  42. Setting the number of map tasks and reduce tasks
  43. How does Hadoop perform input splits?
  44. Sorting large data using MapReduce/Hadoop
  45. What are some scenarios for which MPI is a better fit than MapReduce?
  46. Map-Reduce performance in MongoDb 2.2, 2.4, and 2.6
  47. MapReduce implementation in Scala
  48. Advantages of using NullWritable in Hadoop
  49. What is a container in YARN?
  50. No such method exception Hadoop <init>