1、 查看数据源的文件是否存在，权限等信息

[hadoop@hadoop1 conf]$ hadoop fs -ls 192.168.2.31:9000/tmp/pageview.log

Found 1 items

-r--r--r-- 2 hc supergroup 187764409 2013-06-07 14:21 /tmp/pageview.log

2、使用distcp命令进行拷贝

[hadoop@hadoop1 conf]$ hadoop distcp -overwrite hdfs://192.168.2.31:9000/tmp/pageview.log hdfs://hadoop1:9000/tmp/pageview.log

13/06/13 13:29:55 INFO tools.DistCp: srcPaths=[hdfs://192.168.2.31:9000/tmp/pageview.log]

13/06/13 13:29:55 INFO tools.DistCp: destPath=hdfs://hadoop1:9000/tmp/pageview.log

13/06/13 13:29:57 INFO tools.DistCp: hdfs://hadoop1:9000/tmp/pageview.log does not exist.

13/06/13 13:29:57 INFO tools.DistCp: sourcePathsCount=1

13/06/13 13:29:57 INFO tools.DistCp: filesToCopyCount=1

13/06/13 13:29:57 INFO tools.DistCp: bytesToCopyCount=179.1m

13/06/13 13:29:57 INFO mapred.JobClient: Running job: job_201305151449_0064

13/06/13 13:29:58 INFO mapred.JobClient: map 0% reduce 0%

13/06/13 13:30:30 INFO mapred.JobClient: map 100% reduce 0%

13/06/13 13:30:35 INFO mapred.JobClient: Job complete: job_201305151449_0064

13/06/13 13:30:35 INFO mapred.JobClient: Counters: 22

13/06/13 13:30:35 INFO mapred.JobClient: Job Counters

13/06/13 13:30:35 INFO mapred.JobClient: SLOTS_MILLIS_MAPS=34609

13/06/13 13:30:35 INFO mapred.JobClient: Total time spent by all reduces waiting after reserving slots (ms)=0

13/06/13 13:30:35 INFO mapred.JobClient: Total time spent by all maps waiting after reserving slots (ms)=0

13/06/13 13:30:35 INFO mapred.JobClient: Launched map tasks=1

13/06/13 13:30:35 INFO mapred.JobClient: SLOTS_MILLIS_REDUCES=0

13/06/13 13:30:35 INFO mapred.JobClient: File Input Format Counters

13/06/13 13:30:35 INFO mapred.JobClient: Bytes Read=222

13/06/13 13:30:35 INFO mapred.JobClient: File Output Format Counters

13/06/13 13:30:35 INFO mapred.JobClient: Bytes Written=0

13/06/13 13:30:35 INFO mapred.JobClient: FileSystemCounters

13/06/13 13:30:35 INFO mapred.JobClient: HDFS_BYTES_READ=187764783

13/06/13 13:30:35 INFO mapred.JobClient: FILE_BYTES_WRITTEN=22404

13/06/13 13:30:35 INFO mapred.JobClient: HDFS_BYTES_WRITTEN=187764409

13/06/13 13:30:35 INFO mapred.JobClient: distcp

13/06/13 13:30:35 INFO mapred.JobClient: Files copied=1

13/06/13 13:30:35 INFO mapred.JobClient: Bytes copied=187764409

13/06/13 13:30:35 INFO mapred.JobClient: Bytes expected=187764409

13/06/13 13:30:35 INFO mapred.JobClient: Map-Reduce Framework

13/06/13 13:30:35 INFO mapred.JobClient: Map input records=1

13/06/13 13:30:35 INFO mapred.JobClient: Physical memory (bytes) snapshot=59801600

13/06/13 13:30:35 INFO mapred.JobClient: Spilled Records=0

13/06/13 13:30:35 INFO mapred.JobClient: CPU time spent (ms)=12550

13/06/13 13:30:35 INFO mapred.JobClient: Total committed heap usage (bytes)=7864320

13/06/13 13:30:35 INFO mapred.JobClient: Virtual memory (bytes) snapshot=880443392

13/06/13 13:30:35 INFO mapred.JobClient: Map input bytes=122

13/06/13 13:30:35 INFO mapred.JobClient: Map output records=0

2、 监测原文件和目的文件是否一致

[hadoop@hadoop1 conf]$ hadoop fs -ls hdfs://192.168.2.31:9000/tmp/pageview.log

Found 1 items

-r--r--r-- 2 hc supergroup 187764409 2013-06-07 14:21 /tmp/pageview.log