hadoop jar ./share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.2.0-tests.jar TestDFSIO -write -nrFiles 10 -size 100MB
14/07/21 21:29:42 INFO mapreduce.Job: Counters: 45 File System Counters FILE: Number of bytes read=856 FILE: Number of bytes written=872121 FILE: Number of read operations=0 FILE: Number of large read operations=0 FILE: Number of write operations=0 HDFS: Number of bytes read=2320 HDFS: Number of bytes written=1048576079 HDFS: Number of read operations=43 HDFS: Number of large read operations=0 HDFS: Number of write operations=12 Job Counters Killed map tasks=3 Launched map tasks=13 Launched reduce tasks=1 Data-local map tasks=6 Rack-local map tasks=7 Total time spent by all maps in occupied slots (ms)=1109317 Total time spent by all reduces in occupied slots (ms)=91582 Map-Reduce Framework Map input records=10 Map output records=50 Map output bytes=750 Map output materialized bytes=910 Input split bytes=1200 Combine input records=0 Combine output records=0 Reduce input groups=5 Reduce shuffle bytes=910 Reduce input records=50 Reduce output records=5 Spilled Records=100 Shuffled Maps =10 Failed Shuffles=0 Merged Map outputs=10 GC time elapsed (ms)=7691 CPU time spent (ms)=30730 Physical memory (bytes) snapshot=2555801600 Virtual memory (bytes) snapshot=11073003520 Total committed heap usage (bytes)=1874329600 Shuffle Errors BAD_ID=0 CONNECTION=0 IO_ERROR=0 WRONG_LENGTH=0 WRONG_MAP=0 WRONG_REDUCE=0 File Input Format Counters Bytes Read=1120 File Output Format Counters Bytes Written=79 14/07/21 21:29:42 INFO fs.TestDFSIO: ----- TestDFSIO ----- : write 14/07/21 21:29:42 INFO fs.TestDFSIO: Date & time: Mon Jul 21 21:29:42 CST 2014 14/07/21 21:29:42 INFO fs.TestDFSIO: Number of files: 10 14/07/21 21:29:42 INFO fs.TestDFSIO: Total MBytes processed: 1000.0 14/07/21 21:29:42 INFO fs.TestDFSIO: Throughput mb/sec: 3.403479036270876 14/07/21 21:29:42 INFO fs.TestDFSIO: Average IO rate mb/sec: 4.484561443328857 14/07/21 21:29:42 INFO fs.TestDFSIO: IO rate std deviation: 1.7674698292439088 14/07/21 21:29:42 INFO fs.TestDFSIO: Test exec time sec: 190.944
hadoop jar ./share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.2.0-tests.jar TestDFSIO -write -nrFiles 10 -size 1GB
14/07/21 22:09:57 INFO mapreduce.Job: Counters: 47 File System Counters FILE: Number of bytes read=875 FILE: Number of bytes written=872159 FILE: Number of read operations=0 FILE: Number of large read operations=0 FILE: Number of write operations=0 HDFS: Number of bytes read=2320 HDFS: Number of bytes written=10737418320 HDFS: Number of read operations=43 HDFS: Number of large read operations=0 HDFS: Number of write operations=12 Job Counters Failed map tasks=7 Killed map tasks=1 Launched map tasks=18 Launched reduce tasks=1 Other local map tasks=8 Data-local map tasks=6 Rack-local map tasks=4 Total time spent by all maps in occupied slots (ms)=4322906 Total time spent by all reduces in occupied slots (ms)=155182 Map-Reduce Framework Map input records=10 Map output records=50 Map output bytes=769 Map output materialized bytes=929 Input split bytes=1200 Combine input records=0 Combine output records=0 Reduce input groups=5 Reduce shuffle bytes=929 Reduce input records=50 Reduce output records=5 Spilled Records=100 Shuffled Maps =10 Failed Shuffles=0 Merged Map outputs=10 GC time elapsed (ms)=26386 CPU time spent (ms)=119850 Physical memory (bytes) snapshot=2830766080 Virtual memory (bytes) snapshot=11052699648 Total committed heap usage (bytes)=2014642176 Shuffle Errors BAD_ID=0 CONNECTION=0 IO_ERROR=0 WRONG_LENGTH=0 WRONG_MAP=0 WRONG_REDUCE=0 File Input Format Counters Bytes Read=1120 File Output Format Counters Bytes Written=80 14/07/21 22:09:59 INFO fs.TestDFSIO: ----- TestDFSIO ----- : write 14/07/21 22:10:00 INFO fs.TestDFSIO: Date & time: Mon Jul 21 22:09:59 CST 2014 14/07/21 22:10:00 INFO fs.TestDFSIO: Number of files: 10 14/07/21 22:10:00 INFO fs.TestDFSIO: Total MBytes processed: 10240.0 14/07/21 22:10:00 INFO fs.TestDFSIO: Throughput mb/sec: 6.388915232072354 14/07/21 22:10:00 INFO fs.TestDFSIO: Average IO rate mb/sec: 11.30741024017334 14/07/21 22:10:00 INFO fs.TestDFSIO: IO rate std deviation: 7.81592713288423 14/07/21 22:10:00 INFO fs.TestDFSIO: Test exec time sec: 556.575
环境信息:
x220, i5-2430M, 4G*2, 320G
Windows 7 Ultimate, Vmware 8
Virtual Workstation: 2 cores, 2G, 40G
Hadoop 2.2.0