Is there currently no way to disable the message compression? On Fri, Feb 24, 2012 at 4:50 PM, Thomas Jungblut <[email protected]> wrote: > I have reworked the Avro testcase to test these issues. > (org.apache.hama.bsp.message.TestAvroMessageManager). > > There I am sending 3 types of messages, booleans, doubles and ints. They > are packed into a single bundle, compressed and transfered and back at home > they get deserialized. > The boolean package seem to get to the desitnation correctly since B is the > first in the alphabet. > However, it seems that Integers and Doubles aren't transferred correctly: > EOF Exception while deserializing. > > Don't waste your time with it, I write him a mail later on. > The JNI version works correctly and is just a bit slower on compression, > whereas it is faster on decompression. > > No need to waste the time ;) > > 2012/2/24 Apurv Verma <[email protected]> > >> OK, I see it now. You mean to say the JNI-Snappy which is in org.xerial >> package works correctly but not Dain's snappy which is in org.iq80 , which >> is pure Java. >> >> I would try to check all of these after my exams, once again.(Day After >> tomorrow) I remember that I used 0.3-Incubating version of Dain's snappy >> and it seemed to work fine. I was able to run Pi Example with it. >> >> Now if we are to use the JNI version of snappy it might be slow so instead >> of using it as a default compressor, we would like to give option of >> choosing between compression and no-compression? >> >> >> >> -- >> thanks and regards, >> >> Apurv Verma >> B. Tech.(CSE) >> IIT- Ropar >> >> >> >> >> >> >> On Fri, Feb 24, 2012 at 4:36 AM, Apurv Verma <[email protected]> wrote: >> >> > What is buggy in Dain's snappy, can you let me know? >> > >> > -- >> > thanks and regards, >> > >> > Apurv Verma >> > B. Tech.(CSE) >> > IIT- Ropar >> > >> > >> > >> > >> > >> > >> > On Thu, Feb 23, 2012 at 5:06 PM, Thomas Jungblut < >> > [email protected]> wrote: >> > >> >> 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]> >> >> >> > >> > >> > > > > -- > Thomas Jungblut > Berlin <[email protected]>
-- Best Regards, Edward J. Yoon @eddieyoon
