It seems that Dain's snappy is buggy. I tried the Hadoop codec as well as directly using streams. However, I just changed it to the xerial version in POM and it now works correctly.
I will contact dain and try to sort out things. Please update the trunk and rebuild. Sorry for the inconvenience. 2012/2/23 Thomas Jungblut <[email protected]> > Yep, maybe this is the issue. In the Maven POM is the dain version, in > impor statements the xerial version. Sorry for the inconsistency. I fix it. > > > 2012/2/23 Thomas Jungblut <[email protected]> > >> Wait a minute, I guess this is the wrong library. >> >> My intention was to use the https://github.com/dain/snappy lib, since >> it is faster than the JNI port. >> I investigate it after launch. >> >> >> 2012/2/23 Edward J. Yoon <[email protected]> >> >>> Hmm, the snappy-0.2.jar is already in lib folder. >>> >>> edward@slave:~/workspace/hama-trunk$ ls lib/ >>> ant-1.7.1.jar commons-configuration-1.6.jar >>> hadoop-test-1.0.0.jar jetty-util-6.1.14.jar >>> netty-3.2.6.Final.jar zookeeper-3.3.3.jar >>> ant-launcher-1.7.1.jar commons-lang-2.6.jar >>> jackson-core-asl-1.9.2.jar jsp-2.1-6.1.14.jar >>> servlet-api-6.0.32.jar >>> avro-1.6.0.jar commons-logging-1.1.1.jar >>> jackson-mapper-asl-1.9.2.jar jsp-api-2.1-6.1.14.jar >>> slf4j-api-1.5.8.jar >>> avro-ipc-1.6.0.jar guava-10.0.1.jar >>> jetty-6.1.14.jar junit-4.8.1.jar >>> slf4j-log4j12-1.5.8.jar >>> commons-cli-1.2.jar hadoop-core-1.0.0.jar >>> jetty-annotations-6.1.14.jar log4j-1.2.16.jar snappy-0.2.jar >>> >>> >>> On Thu, Feb 23, 2012 at 4:51 PM, Thomas Jungblut >>> <[email protected]> wrote: >>> > You have to update your jars, Snappy is a new dependency for >>> compression. >>> > >>> > 2012/2/23 Edward J. Yoon <[email protected]> >>> > >>> >> I received below error message with pi example. >>> >> >>> >> 12/02/23 15:26:16 DEBUG sync.ZooKeeperSyncClientImpl: leaveBarrier() >>> >> at superstep:-1 znode size: (0) znodes:[] >>> >> 12/02/23 15:26:16 WARN bsp.GroomServer: Error running child >>> >> java.lang.NoClassDefFoundError: org/xerial/snappy/SnappyInputStream >>> >> at java.lang.Class.forName0(Native Method) >>> >> at java.lang.Class.forName(Class.java:247) >>> >> at >>> >> >>> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:819) >>> >> at >>> >> >>> org.apache.hama.bsp.message.compress.BSPMessageCompressorFactory.getCompressor(BSPMessageCompressorFactory.java:37) >>> >> at >>> >> >>> org.apache.hama.bsp.message.CompressableMessageManager.initCompression(CompressableMessageManager.java:36) >>> >> at >>> >> >>> org.apache.hama.bsp.message.AvroMessageManagerImpl.init(AvroMessageManagerImpl.java:60) >>> >> at org.apache.hama.bsp.BSPPeerImpl.<init>(BSPPeerImpl.java:145) >>> >> at >>> >> >>> org.apache.hama.bsp.GroomServer$BSPPeerChild.main(GroomServer.java:969) >>> >> Caused by: java.lang.ClassNotFoundException: >>> >> org.xerial.snappy.SnappyInputStream >>> >> at java.net.URLClassLoader$1.run(URLClassLoader.java:202) >>> >> at java.security.AccessController.doPrivileged(Native Method) >>> >> at java.net.URLClassLoader.findClass(URLClassLoader.java:190) >>> >> at java.lang.ClassLoader.loadClass(ClassLoader.java:306) >>> >> at >>> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) >>> >> at java.lang.ClassLoader.loadClass(ClassLoader.java:247) >>> >> >>> >> >>> >> -- >>> >> Best Regards, Edward J. Yoon >>> >> @eddieyoon >>> >> >>> > >>> > >>> > >>> > -- >>> > Thomas Jungblut >>> > Berlin <[email protected]> >>> >>> >>> >>> -- >>> Best Regards, Edward J. Yoon >>> @eddieyoon >>> >> >> >> >> -- >> Thomas Jungblut >> Berlin <[email protected]> >> > > > > -- > Thomas Jungblut > Berlin <[email protected]> > -- Thomas Jungblut Berlin <[email protected]>
