Are the tasks on the slaves also running as root? If not, that might explain the problem.
dean Dean Wampler, Ph.D. Author: Programming Scala, 2nd Edition <http://shop.oreilly.com/product/0636920033073.do> (O'Reilly) Typesafe <http://typesafe.com> @deanwampler <http://twitter.com/deanwampler> http://polyglotprogramming.com On Tue, Apr 28, 2015 at 8:30 PM, Lin Hao Xu <xulin...@cn.ibm.com> wrote: > 1. The full command line is written in a shell script: > > LIB=/home/spark/.m2/repository > > /opt/spark/bin/spark-submit \ > --class spark.pcap.run.TestPcapSpark \ > --jars > $LIB/org/pcap4j/pcap4j-core/1.4.0/pcap4j-core-1.4.0.jar,$LIB/org/pcap4j/pcap4j-packetfactory-static/1.4.0/pcap4j-packetfactory-static-1.4.0.jar,$LIB/ > org/slf4j/slf4j-api/1.7.6/slf4j-api-1.7.6.jar,$LIB/org/slf4j/slf4j-log4j12/1.7.6/slf4j-log4j12-1.7.6.jar,$LIB/net/java/dev/jna/jna/4.1.0/jna-4.1.0.jar > \ > /home/spark/napa/napa.jar > > 2. And we run this script with *sudo*, if you do not use sudo, then you > cannot access network interface. > > 3. We also tested List<PcapNetworkInterface> nifs = Pcaps.findAllDevs() in > a standard Java program, it really worked like a champion. > > Best regards, > > Lin Hao XU > IBM Research China > Email: xulin...@cn.ibm.com > My Flickr: http://www.flickr.com/photos/xulinhao/sets > > [image: Inactive hide details for Dean Wampler ---2015/04/28 > 20:07:54---It's probably not your code. What's the full command line you > u]Dean > Wampler ---2015/04/28 20:07:54---It's probably not your code. What's the > full command line you use to submit the job? > > From: Dean Wampler <deanwamp...@gmail.com> > To: Hai Shan Wu/China/IBM@IBMCN > Cc: user <user@spark.apache.org>, Lin Hao Xu/China/IBM@IBMCN > Date: 2015/04/28 20:07 > Subject: Re: A problem of using spark streaming to capture network packets > ------------------------------ > > > > It's probably not your code. > > What's the full command line you use to submit the job? > > Are you sure the job on the cluster has access to the network interface? > Can you test the receiver by itself without Spark? For example, does this > line work as expected: > > List<PcapNetworkInterface> nifs = Pcaps.findAllDevs(); > > dean > > Dean Wampler, Ph.D. > Author: *Programming Scala, 2nd Edition* > <http://shop.oreilly.com/product/0636920033073.do> (O'Reilly) > *Typesafe* <http://typesafe.com/> > *@deanwampler* <http://twitter.com/deanwampler> > *http://polyglotprogramming.com* <http://polyglotprogramming.com/> > > On Mon, Apr 27, 2015 at 4:03 AM, Hai Shan Wu <*wuh...@cn.ibm.com* > <wuh...@cn.ibm.com>> wrote: > > Hi Everyone > > We use pcap4j to capture network packets and then use spark streaming > to analyze captured packets. However, we met a strange problem. > > If we run our application on spark locally (for example, spark-submit > --master local[2]), then the program runs successfully. > > If we run our application on spark standalone cluster, then the > program will tell us that NO NIFs found. > > I also attach two test files for clarification. > > So anyone can help on this? Thanks in advance! > > > * (See attached file: PcapReceiver.java)(See attached file: > TestPcapSpark.java)* > > Best regards, > > - Haishan > > Haishan Wu (吴海珊) > > IBM Research - China > Tel: 86-10-58748508 > Fax: 86-10-58748330 > Email: *wuh...@cn.ibm.com* <wuh...@cn.ibm.com> > Lotus Notes: Hai Shan Wu/China/IBM > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: *user-unsubscr...@spark.apache.org* > <user-unsubscr...@spark.apache.org> > For additional commands, e-mail: *user-h...@spark.apache.org* > <user-h...@spark.apache.org> > > >
