Have you read this? http://forums.sun.com/thread.jspa?messageID=9734530
<http://forums.sun.com/thread.jspa?messageID=9734530>I don't think EC2 instances have any swap. On Tue, Apr 27, 2010 at 10:16 AM, Lee Parker <l...@socialagency.com> wrote: > Can anyone help with this? It is preventing me from getting backups of our > cluster. > > Lee Parker > On Mon, Apr 26, 2010 at 10:02 PM, Lee Parker <l...@socialagency.com> wrote: > >> I was attempting to get a snapshot on our cassandra nodes. I get the >> following error every time I run nodetool ... snapshot. >> >> Exception in thread "main" java.io.IOException: Cannot run program "ln": >> java.io.IOException: error=12, Cannot allocate memory >> at java.lang.ProcessBuilder.start(ProcessBuilder.java:459) >> at >> org.apache.cassandra.io.util.FileUtils.createHardLink(FileUtils.java:221) >> at >> org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1060) >> at org.apache.cassandra.db.Table.snapshot(Table.java:256) >> at >> org.apache.cassandra.service.StorageService.takeAllSnapshot(StorageService.java:1005) >> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >> at >> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) >> at >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) >> at java.lang.reflect.Method.invoke(Method.java:597) >> at >> com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:93) >> at >> com.sun.jmx.mbeanserver.StandardMBeanIntrospector.invokeM2(StandardMBeanIntrospector.java:27) >> at >> com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:208) >> at com.sun.jmx.mbeanserver.PerInterface.invoke(PerInterface.java:120) >> at com.sun.jmx.mbeanserver.MBeanSupport.invoke(MBeanSupport.java:262) >> at >> com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836) >> at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761) >> at >> javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1426) >> at >> javax.management.remote.rmi.RMIConnectionImpl.access$200(RMIConnectionImpl.java:72) >> at >> javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1264) >> at >> javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1359) >> at >> javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:788) >> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >> at >> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) >> at >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) >> at java.lang.reflect.Method.invoke(Method.java:597) >> at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305) >> at sun.rmi.transport.Transport$1.run(Transport.java:159) >> at java.security.AccessController.doPrivileged(Native Method) >> at sun.rmi.transport.Transport.serviceCall(Transport.java:155) >> at >> sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535) >> at >> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790) >> at >> sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649) >> at >> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) >> at >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) >> at java.lang.Thread.run(Thread.java:619) >> Caused by: java.io.IOException: java.io.IOException: error=12, Cannot >> allocate memory >> at java.lang.UNIXProcess.<init>(UNIXProcess.java:148) >> at java.lang.ProcessImpl.start(ProcessImpl.java:65) >> at java.lang.ProcessBuilder.start(ProcessBuilder.java:452) >> ... 34 more >> >> The nodes are both Amazon EC2 Large instances with 7.5G RAM (6 allocated >> for Java heap) with two cores and only 70G of data in casssandra. They have >> plenty of available RAM and HD space. Has anyone else run into this error? >> >> Lee Parker >> > >
