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Steve Corona commented on CASSANDRA-2845: ----------------------------------------- I actually figured this out- it's more of a cassandra packaging issue than an issue with the actual code. I extracted the cassandra-0.8.1.deb file and diff'ed all of the files with apache-cassandra-0.8.1-bin.tar.gz. I noticed that apache-cassandra-0.8.1.jar was off by a few bytes. I extracted the jar and determined that the deb file was using a different version of the following classes: cli/CliLexer.class cli/CliParser.class cql/CqlLexer.class cql/CqlParser.class I repackaged the .deb using apache-cassandra-0.8.1.jar from the bin.tar.gz (will post instructions below) and it installed on Ubuntu 11.04 without a hitch. I'm not sure if the .jar/.class files used to package the deb were corrupted or just are a different/incomplete/broken version. Poor mans .deb repackaging until it's officially fixed: cd /tmp mkdir work && cd work wget http://www.fightrice.com/mirrors/apache/cassandra/0.8.1/apache-cassandra-0.8.1-bin.tar.gz tar -zxvf apache-cassandra-0.8.1-bin.tar.gz mkdir deb && cd deb wget http://www.apache.org/dist/cassandra/debian/pool/main/c/cassandra/cassandra_0.8.1_all.deb # need bintools to get ar utility sudo apt-get install binutils ar vx cassandra_0.8.1_all.deb tar -zxvf data.tar.gz rm data.tar.gz cd ./usr/share/cassandra mv /tmp/work/apache-cassandra-0.8.1/lib/apache-cassandra-0.8.1.jar . cd /tmp/work/deb tar -czvf data.tar.gz etc/ usr/ var/ rm cassandra_0.8.1_all.deb ar rc cassandra_0.8.1_all.deb debian-binary control.tar.gz data.tar.gz sudo apt-get install openjdk-6-jdk sudo dpkg -i cassandra_0.8.1_all.deb Alternatively, you can use policy-rc.d to prevent cassandra.deb's post-init script from running on install and replace the messed up .jar after it has been installed. Instructions here: http://lifeonubuntu.com/how-to-prevent-server-daemons-from-starting-during-apt-get-install/ > Cassandra uses 100% system CPU on Ubuntu Natty (11.04) > ------------------------------------------------------ > > Key: CASSANDRA-2845 > URL: https://issues.apache.org/jira/browse/CASSANDRA-2845 > Project: Cassandra > Issue Type: Bug > Components: Core > Affects Versions: 0.8.0, 0.8.1 > Environment: Default install of Ubuntu 11.04 > Reporter: Steve Corona > > Step 1. Boot up a brand new, default Ubuntu 11.04 Server install > Step 2. Install Cassandra from Apache APT Respository (deb > http://www.apache.org/dist/cassandra/debian 08x main) > Step 3. apt-get install cassandra, as soon as it cassandra starts it will > freeze the machine > What's happening is that as soon as cassandra starts up it immediately sucks > up 100% of CPU and starves the machine. This effectively bricks the box until > you boot into single user mode and disable the cassandra init.d script. > Under htop, the CPU usage shows up as "system" cpu, not user. > The machine I'm testing this on is a Quad-Core Sandy Bridge w/ 16GB of > Memory, so it's not a system resource issue. I've also tested this on > completely different hardware (Dual 64-Bit Xeons & AMD X4) and it has the > same effect. > Ubuntu 10.10 does not exhibit the same issue. I have only tested 0.8 and > 0.8.1. > root@cassandra01:/# java -version > java version "1.6.0_22" > OpenJDK Runtime Environment (IcedTea6 1.10.2) (6b22-1.10.2-0ubuntu1~11.04.1) > OpenJDK 64-Bit Server VM (build 20.0-b11, mixed mode) > root@cassandra:/# uname -a > Linux cassandra01 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC > 2011 x86_64 x86_64 x86_64 GNU/Linux > /proc/cpu > Intel(R) Xeon(R) CPU E31270 @ 3.40GHz > /proc/meminfo > MemTotal: 16459776 kB > MemFree: 14190708 kB -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira