I have row cache - it's about 20GB big in this case. The problem can be reproduced with our load test - we are using 20 reader threads on single Cassandra node.
I will retest it with Java 6 - still it looks to me like JNA problem and JDK in this case should not matter, but we will see. On Thu, Mar 22, 2012 at 8:27 PM, Benoit Perroud <ben...@noisette.ch> wrote: > Sounds like a race condition in the off heap caching while calling > Unsafe.free(). > > Do you use cache ? What is your use case when you encounter this error > ? Are you able to reproduce it ? > > > 2012/3/22 Maciej Miklas <mac.mik...@googlemail.com>: > > Hi *, > > > > My Cassandra installation runs on flowing system: > > > > Linux with Kernel 2.6.32.22 > > jna-3.3.0 > > Java 1.7.0-b147 > > > > Sometimes we are getting following error: > > > > *** glibc detected *** /var/opt/java1.7/bin/java: free(): invalid > pointer: > > 0x00007f66088a6000 *** > > ======= Backtrace: ========= > > /lib/libc.so.6[0x7f661d7099a8] > > /lib/libc.so.6(cfree+0x76)[0x7f661d70bab6] > > /lib64/ld-linux-x86-64.so.2(_dl_deallocate_tls+0x59)[0x7f661e02f349] > > /lib/libpthread.so.0[0x7f661de09237] > > /lib/libpthread.so.0[0x7f661de0931a] > > /lib/libpthread.so.0[0x7f661de0a0bd] > > /lib/libc.so.6(clone+0x6d)[0x7f661d76564d] > > ======= Memory map: ======== > > 00400000-00401000 r-xp 00000000 68:07 537448203 > > /var/opt/jdk1.7.0/bin/java > > 00600000-00601000 rw-p 00000000 68:07 537448203 > > /var/opt/jdk1.7.0/bin/java > > 01bae000-01fd0000 rw-p 00000000 00:00 0 > > [heap] > > 01fd0000-15798000 rw-p 00000000 00:00 0 > > [heap] > > 40002000-40005000 ---p 00000000 00:00 0 > > 40005000-40023000 rw-p 00000000 00:00 0 > > 40030000-40033000 ---p 00000000 00:00 0 > > 40033000-40051000 rw-p 00000000 00:00 0 > > > > Does anyone have similar problems? or maybe some hints? > > > > Thanks, > > Maciej > > > > -- > sent from my Nokia 3210 >
