hadoop-common-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "yingnan.ma" <yingnan...@ipinyou.com>
Subject about hadoop lzo compression
Date Wed, 23 May 2012 10:05:16 GMT
Hi,

I encounter a problem about when I install the LZO,
after i install it, I found that it can run on Pig scripts
and streaming scripts and when I check these jobs though
 jobtracker , it shows that
mapred.compress.map.output true,
io.compression.codecs 
org.apache.hadoop.io.compress.GzipCodec,
org.apache.hadoop.io.compress.DefaultCodec,
com.hadoop.compression.lzo.LzoCodec,
com.hadoop.compression.lzo.LzopCodec

io.compression.codec.lzo.classcom.hadoop.compression.lzo.LzoCodec

and the pig && streaming can run also.

However, I found that it would gave me some error notices

such as:

2012-05-23 17:32:57,052 [Thread-6] ERROR com.hadoop.compression.lzo.GPLNativeCodeLoader -
Could not load native gpl library
java.lang.UnsatisfiedLinkError: no gplcompression in java.library.path
        at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1738)
        at java.lang.Runtime.loadLibrary0(Runtime.java:823)
        at java.lang.System.loadLibrary(System.java:1028)
        at com.hadoop.compression.lzo.GPLNativeCodeLoader.<clinit>(GPLNativeCodeLoader.java:32)
        at com.hadoop.compression.lzo.LzoCodec.<clinit>(LzoCodec.java:71)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:247)
        at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:943)
        at org.apache.hadoop.io.compress.CompressionCodecFactory.getCodecClasses(CompressionCodecFactory.java:89)
        at org.apache.hadoop.io.compress.CompressionCodecFactory.<init>(CompressionCodecFactory.java:134)
        at org.apache.hadoop.mapreduce.lib.input.TextInputFormat.isSplitable(TextInputFormat.java:46)
        at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:254)
        at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.getSplits(PigInputFormat.java:268)
        at org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:944)
        at org.apache.hadoop.mapred.JobClient.writeSplits(JobClient.java:961)
        at org.apache.hadoop.mapred.JobClient.access$500(JobClient.java:170)
        at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:880)
        at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:833)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1115)
        at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:833)
        at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:807)
        at org.apache.hadoop.mapred.jobcontrol.Job.submit(Job.java:378)
        at org.apache.hadoop.mapred.jobcontrol.JobControl.startReadyJobs(JobControl.java:247)
        at org.apache.hadoop.mapred.jobcontrol.JobControl.run(JobControl.java:279)
        at java.lang.Thread.run(Thread.java:662)
2012-05-23 17:32:57,053 [Thread-6] ERROR com.hadoop.compression.lzo.LzoCodec - Cannot load
native-lzo without native-hadoop
2012-05-23 17:32:57,070 [Thread-6] INFO  org.apache.pig.backend.hadoop.executionengine.util.MapRedUtil
- Total input paths (combined) to process : 1
2012-05-23 17:32:58,419 [main] INFO  org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher
- HadoopJobId: job_201204051731_1249
2012-05-23 17:32:58,419 [main] INFO  org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher
- More information at: http://hdjt:50030/jobdetails.jsp?jobid=job_201204051731_1249
2012-05-23 17:33:14,526 [main] INFO  org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher
- 50% complete
2012-05-23 17:33:18,134 [main] INFO  org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher
- 100% complete
2012-05-23 17:33:18,136 [main] INFO  org.apache.pig.tools.pigstats.PigStats - Script Statistics:

HadoopVersion   PigVersion      UserId  StartedAt       FinishedAt      Features
0.20.2-cdh3u0   0.8.0-cdh3u0    root    2012-05-23 17:32:54     2012-05-23 17:33:18    FILTER
Success!
Job Stats (time in seconds):
JobId   Maps    Reduces MaxMapTime      MinMapTIme      AvgMapTime      MaxReduceTime  MinReduceTime
  AvgReduceTime   Alias   Feature Outputs
job_201204051731_1249   1       0       10      10      10      0       0     A,B      MAP_ONLY
       hdfs://hdmaster:54310/tmp/temp-1842686846/tmp-2027515206,

It make me confuse because if it has some issues, it would not work, however it may work.
So I need some help, thank you for your help!

Best Regards

Malone


2012-05-23 


2012-05-23 

  
Yingnan.Ma
E    yingnan.ma@ipinyou.com
MSN:  mayingnan_blue@hotmail.com
QQ: 230624226
北京市朝阳区八里庄西里100号东区 住邦2000,1号楼A座2101室,100025
      北京・上海・硅谷
http://www.ipinyou.com
Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message