Apache Hadoop MapReduce Core errors

A software framework for easily writing applications which process vast amounts of data in-parallel on large clusters of commodity hardware in a reliable, fault-tolerant manner

https://hadoop.apache.org/docs/r1.2.1/mapred_tutorial.html
Solution coverage:
Summary coverage:

Nothing to list here.
Package nameClass namePatterns foundSolution coverageSummary coverage
org.apache.hadoop.mapredMapTask130
org.apache.hadoop.mapredJobClient84
org.apache.hadoop.mapredJobTracker27
org.apache.hadoop.mapredFileInputFormat25
org.apache.hadoop.mapredReduceTask23
org.apache.hadoop.mapredJobConf21
org.apache.hadoop.mapredMapTask$MapOutputBuffer17
org.apache.hadoop.mapredMapRunner8
org.apache.hadoop.mapredLineRecordReader7
org.apache.hadoop.mapredMapTask$NewDirectOutputCollector6
org.apache.hadoop.mapredJobInProgress5
org.apache.hadoop.mapredMapTask$TrackedRecordReader5
org.apache.hadoop.mapredJobClient$24
org.apache.hadoop.mapredMapTask$NewOutputCollector4
org.apache.hadoop.mapredMapTask$MapOutputBuffer$Buffer4
org.apache.hadoop.mapredFileOutputFormat3
org.apache.hadoop.mapredTextInputFormat3
org.apache.hadoop.mapredTextOutputFormat3
org.apache.hadoop.mapredSequenceFileInputFormat3
org.apache.hadoop.mapredMapTask$NewTrackingRecordReader2
org.apache.hadoop.mapredMapOutputFile2
org.apache.hadoop.mapredSequenceFileRecordReader2
org.apache.hadoop.mapredTask2
org.apache.hadoop.mapredFileOutputCommitter2
org.apache.hadoop.mapredIFile$Writer2
org.apache.hadoop.mapredReduceTask$NewTrackingRecordWriter2
org.apache.hadoop.mapredMapTask$OldOutputCollector2
org.apache.hadoop.mapredTaskLog2
org.apache.hadoop.mapredSequenceFileOutputFormat1
org.apache.hadoop.mapredIFile$Reader1
org.apache.hadoop.mapredMapFileOutputFormat1
org.apache.hadoop.mapredTask$NewCombinerRunner$OutputConverter1
org.apache.hadoop.mapredMerger1
org.apache.hadoop.mapredJobClient$NetworkedJob1
org.apache.hadoop.mapredSpillRecord1
org.apache.hadoop.mapredMerger$MergeQueue1
org.apache.hadoop.mapredJobClient$11
org.apache.hadoop.mapredTask$CombinerRunner1
org.apache.hadoop.mapredTask$CombineOutputCollector1
org.apache.hadoop.mapredReduceTask$OldTrackingRecordWriter1
org.apache.hadoop.mapredTaskAttemptID1
org.apache.hadoop.mapredOutputCommitter1
org.apache.hadoop.mapredCounters1
org.apache.hadoop.mapredReduceTaskStatus1
org.apache.hadoop.mapredTaskStatus1
org.apache.hadoop.mapredMerger$Segment1
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