性能好像好了很多。
之前0.19.1版本运行完至少要1分钟
这个10秒都不用…
标签：hadoop, hadoop-0.19.1, hadoop-0.20.0bin/hadoop jar hadoop-0.20.0-examples.jar wordcount dir dir-out1
09/05/01 14:28:30 INFO jvm.JvmMetrics: Initializing JVM Metrics with processName=JobTracker, sessionId=
09/05/01 14:28:30 INFO input.FileInputFormat: Total input paths to process : 1
09/05/01 14:28:31 INFO mapred.JobClient: Running job: job_local_0001
09/05/01 14:28:31 INFO input.FileInputFormat: Total input paths to process : 1
09/05/01 14:28:31 INFO mapred.MapTask: io.sort.mb = 100
09/05/01 14:28:31 INFO mapred.MapTask: data buffer = 79691776/99614720
09/05/01 14:28:31 INFO mapred.MapTask: record buffer = 262144/327680
09/05/01 14:28:32 INFO mapred.MapTask: Starting flush of map output
09/05/01 14:28:32 INFO mapred.JobClient: map 0% reduce 0%
09/05/01 14:28:32 INFO mapred.MapTask: Finished spill 0
09/05/01 14:28:32 INFO mapred.TaskRunner: Task:attempt_local_0001_m_000000_0 is done. And is in the process of commiting
09/05/01 14:28:32 INFO mapred.LocalJobRunner:
09/05/01 14:28:32 INFO mapred.TaskRunner: Task ‘attempt_local_0001_m_000000_0′ done.
09/05/01 14:28:32 INFO mapred.LocalJobRunner:
09/05/01 14:28:32 INFO mapred.Merger: Merging 1 sorted segments
09/05/01 14:28:32 INFO mapred.Merger: Down to the last merge-pass, with 1 segments left of total size: 267034 bytes
09/05/01 14:28:32 INFO mapred.LocalJobRunner:
09/05/01 14:28:33 INFO mapred.JobClient: map 100% reduce 0%
09/05/01 14:28:33 INFO mapred.TaskRunner: Task:attempt_local_0001_r_000000_0 is done. And is in the process of commiting
09/05/01 14:28:33 INFO mapred.LocalJobRunner:
09/05/01 14:28:33 INFO mapred.TaskRunner: Task attempt_local_0001_r_000000_0 is allowed to commit now
09/05/01 14:28:33 INFO output.FileOutputCommitter: Saved output of task ‘attempt_local_0001_r_000000_0′ to dir-out1
09/05/01 14:28:33 INFO mapred.LocalJobRunner: reduce > reduce
09/05/01 14:28:33 INFO mapred.TaskRunner: Task ‘attempt_local_0001_r_000000_0′ done.
09/05/01 14:28:34 INFO mapred.JobClient: map 100% reduce 100%
09/05/01 14:28:34 INFO mapred.JobClient: Job complete: job_local_0001
09/05/01 14:28:34 INFO mapred.JobClient: Counters: 14
09/05/01 14:28:34 INFO mapred.JobClient: FileSystemCounters
09/05/01 14:28:34 INFO mapred.JobClient: FILE_BYTES_READ=551968
09/05/01 14:28:34 INFO mapred.JobClient: HDFS_BYTES_READ=1383924
09/05/01 14:28:34 INFO mapred.JobClient: FILE_BYTES_WRITTEN=569086
09/05/01 14:28:34 INFO mapred.JobClient: HDFS_BYTES_WRITTEN=515816
09/05/01 14:28:34 INFO mapred.JobClient: Map-Reduce Framework
09/05/01 14:28:34 INFO mapred.JobClient: Reduce input groups=0
09/05/01 14:28:34 INFO mapred.JobClient: Combine output records=18042
09/05/01 14:28:34 INFO mapred.JobClient: Map input records=12761
09/05/01 14:28:34 INFO mapred.JobClient: Reduce shuffle bytes=0
09/05/01 14:28:34 INFO mapred.JobClient: Reduce output records=0
09/05/01 14:28:34 INFO mapred.JobClient: Spilled Records=36084
09/05/01 14:28:34 INFO mapred.JobClient: Map output bytes=1086784
09/05/01 14:28:34 INFO mapred.JobClient: Combine input records=109855
09/05/01 14:28:34 INFO mapred.JobClient: Map output records=109855
09/05/01 14:28:34 INFO mapred.JobClient: Reduce input records=18042
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