mapreduce 254

  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. merge output files after reduce phase
  13. When do reduce tasks start in Hadoop?
  14. Integration testing Hive jobs
  15. Does MongoDB's $in clause guarantee order
  16. Is Mongodb Aggregation framework faster than map/reduce?
  17. Container is running beyond memory limits
  18. Simple Java Map/Reduce framework
  19. Find all duplicate documents in a MongoDB collection by a key field
  20. Where does hadoop mapreduce framework send my System.out.print() statements ? (stdout)
  21. MongoDB: Terrible MapReduce Performance
  22. Is it better to use the mapred or the mapreduce package to create a Hadoop Job?
  23. MongoDB aggregation comparison: group(), $group and MapReduce
  24. gzip support in Spark
  25. Hadoop DistributedCache is deprecated - what is the preferred API?
  26. 20 Billion Rows/Month - Hbase / Hive / Greenplum / What?
  27. hadoop.mapred vs hadoop.mapreduce?
  28. Sorting large data using MapReduce/Hadoop
  29. Explode the Array of Struct in Hive
  30. data block size in HDFS, why 64MB?
  31. Setting the number of map tasks and reduce tasks
  32. Hadoop : java.lang.ClassCastException: org.apache.hadoop.io.LongWritable cannot be cast to org.apache.hadoop.io.Text
  33. Hive unable to manually set number of reducers
  34. Change File Split size in Hadoop
  35. Hadoop MapReduce provide nested directories as job input
  36. Renaming Part Files in Hadoop Map Reduce
  37. hadoop map reduce secondary sorting
  38. Calling a mapreduce job from a simple java program
  39. Pig vs Hive vs Native Map Reduce
  40. Yarn MapReduce Job Issue - AM Container launch error in Hadoop 2.3.0
  41. MultipleOutputFormat in hadoop
  42. Getting Started with Avro
  43. Difference in calling the job
  44. Hadoop on windows server
  45. How do you use MapReduce/Hadoop?
  46. How to specify KeyValueTextInputFormat Separator in Hadoop-.20 api?
  47. Mongo Map Reduce first time
  48. How to translate from SQL to NoSQL/MapReduce?
  49. On what basis mapreduce framework decides whether to launch a combiner or not
  50. How to sum fields of collection elements without mapping them first (like foldLeft/reduceLeft)?