Cassandra uses 100% system CPU on Ubuntu Natty (11.04)
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Key: CASSANDRA-2845
URL: https://issues.apache.org/jira/browse/CASSANDRA-2845
Project: Cassandra
Issue Type: Bug
Components: Core
Affects Versions: 0.8.1, 0.8.0
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
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