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From "Dr. Andrew Perella" <...@eutechnyx.com>
Subject Unstable cassandra - , Cannot allocate memory
Date Wed, 15 Dec 2010 11:20:47 GMT
This is a crash with Cassandra 0.7.0-beta3 but I am pretty sure I also have got this on a rc1
server too ( We are dropping and recreating keyspaces when this happens)

I do have the JNA enabled but it looks like it is still calling an external program - presumably
this would cause it to ask for the same memory as the parent process and hence die?


      at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        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:662)
Caused by: java.io.IOException: Cannot run program "ln": java.io.IOException: error=12, Cannot
allocate memory
        at java.lang.ProcessBuilder.start(ProcessBuilder.java:460)
        at org.apache.cassandra.io.util.FileUtils.createHardLinkWithExec(FileUtils.java:263)
        at org.apache.cassandra.io.util.FileUtils.createHardLink(FileUtils.java:229)
        at org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1539)
        ... 9 more
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:453)
        ... 12 more
ERROR 12:11:15,673 Fatal exception in thread Thread[MigrationStage:1,5,main]
java.io.IOError: java.io.IOException: Cannot run program "ln": java.io.IOException: error=12,
Cannot allocate memory
        at org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1547)
        at org.apache.cassandra.db.Table.snapshot(Table.java:177)
        at org.apache.cassandra.db.migration.DropKeyspace.beforeApplyModels(DropKeyspace.java:61)
        at org.apache.cassandra.db.migration.Migration.apply(Migration.java:109)
        at org.apache.cassandra.thrift.CassandraServer$2.call(CassandraServer.java:672)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        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:662)
Caused by: java.io.IOException: Cannot run program "ln": java.io.IOException: error=12, Cannot
allocate memory
        at java.lang.ProcessBuilder.start(ProcessBuilder.java:460)
        at org.apache.cassandra.io.util.FileUtils.createHardLinkWithExec(FileUtils.java:263)
        at org.apache.cassandra.io.util.FileUtils.createHardLink(FileUtils.java:229)
        at org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1539)
        ... 9 more
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:453)
        ... 12 more

Dr. Andrew Perella
CTO / Chief  Software Architect

Eutechnyx Limited. Metro Centre East Business Park, Waterside Drive, Gateshead, Tyne &
Wear  NE11 9HU  UK   Co.Reg.No. 2172322

T +44 (0) 191 460 6060           F +44 (0) 191 460 2266           E ajp@eutechnyx.com<mailto:ajp@eutechnyx.com>
          W www.eutechnyx.com<http://www.eutechnyx.com/>




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