Hey guys, I am getting an out of memory (mmap failed) error with Cassandra 1.0.2. The relevant log lines are pasted at http://pastebin.com/UM28ZC1g.
Cassandra works fine until it reaches about 300-400GB of load (on one instance, I have 12 nodes RF=2). Then nodes start failing with such errors. The nodes are pretty beefy, 32GB of ram, 8 cores. Increasing the JVM heap size does not help. I am running on a 64bit jvm. I am using jna. I have memlock unlimited for the user. (I confirmed this by looking at /proc/<pid>/limits). I also tried restarting the process as root, but it crashes with the same error. Also the number of files that I have in the data directory is about ~300, so it should not be exceeding the open files limit. I don't know if this is relevant. I just have two column families, counter_object and counter_time. I am using very wide columns, so row sizes can be huge. You can see from the log link, that the *.db files are sometimes pretty big. Please help! Thank you! -- Regards, Ajeet
