Sounds like either you are running on a 32bit architecture or JVM or you don't have OS level permissions to mmap large Cassandra data files.
One workaround may be to switch to mmap_index_only mode. On Wed, Oct 27, 2010 at 1:49 PM, Matthew Dennis <mden...@riptano.com> wrote: > 2 GiB is pretty small for a C* node. You can also try reducing all the > caching to zero with so little memory. If you have lots of CFs you probably > want to reduce the memtable throughput too. > > On Wed, Oct 27, 2010 at 12:43 PM, Koert Kuipers > <koert.kuip...@diamondnotch.com> wrote: >> >> While bootstrapping a new node, the existing node that is supposed to >> provide the data throws an error, and the bootstrapping hangs. The log from >> the existing node is below. Both nodes have little memory (only 2 Gig, >> windows machines). I used default configurations (Cassandra 0.7). Any >> suggestions how to fix this? Should I just add memory? Thanks Koert >> >> >> >> INFO [STREAM_STAGE:1] 2010-10-27 11:53:09,905 StreamOut.java (line 127) >> Beginning transfer process to /192.168.162.102 - 62825437862633 for ranges >> (124804735337540159479107746638263794797,47070309318543332246917226414989217721] >> >> INFO [STREAM_STAGE:1] 2010-10-27 11:53:09,905 StreamOut.java (line 101) >> Flushing memtables for timeseries... >> >> INFO [STREAM_STAGE:1] 2010-10-27 11:53:09,905 StreamOut.java (line 205) >> Stream context metadata >> [C:\Devel\cassandra\data\timeseries\tickdata-e-82-Data.db/[(0,645809447), >> (1630778211,2136523711)], >> C:\Devel\cassandra\data\timeseries\tickdata-e-83-Data.db/[(0,51509)]], 2 >> sstables. >> >> INFO [STREAM_STAGE:1] 2010-10-27 11:53:09,905 StreamOut.java (line 179) >> Streaming file >> C:\Devel\cassandra\data\timeseries\tickdata-e-82-Data.db/[(0,645809447), >> (1630778211,2136523711)] to /192.168.162.102 >> >> ERROR [MESSAGE-STREAMING-POOL:3] 2010-10-27 11:53:10,124 >> DebuggableThreadPoolExecutor.java (line 102) Error in ThreadPoolExecutor >> >> java.lang.RuntimeException: java.io.IOException: Map failed >> >> at >> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:34) >> >> 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: Map failed >> >> at >> sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:758) >> >> at >> sun.nio.ch.FileChannelImpl.transferToTrustedChannel(FileChannelImpl.java:447) >> >> at >> sun.nio.ch.FileChannelImpl.transferTo(FileChannelImpl.java:520) >> >> at >> org.apache.cassandra.net.FileStreamTask.stream(FileStreamTask.java:96) >> >> at >> org.apache.cassandra.net.FileStreamTask.runMayThrow(FileStreamTask.java:61) >> >> at >> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30) >> >> ... 3 more >> >> Caused by: java.lang.OutOfMemoryError: Map failed >> >> at sun.nio.ch.FileChannelImpl.map0(Native Method) >> >> at >> sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:755) >> >> ... 8 more >> >> ERROR [MESSAGE-STREAMING-POOL:3] 2010-10-27 11:53:10,124 >> CassandraDaemon.java (line 75) Fatal exception in thread >> Thread[MESSAGE-STREAMING-POOL:3,5,main] >> >> java.lang.RuntimeException: java.io.IOException: Map failed >> >> at >> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:34) >> >> 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: Map failed >> >> at >> sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:758) >> >> at >> sun.nio.ch.FileChannelImpl.transferToTrustedChannel(FileChannelImpl.java:447) >> >> at >> sun.nio.ch.FileChannelImpl.transferTo(FileChannelImpl.java:520) >> >> at >> org.apache.cassandra.net.FileStreamTask.stream(FileStreamTask.java:96) >> >> at >> org.apache.cassandra.net.FileStreamTask.runMayThrow(FileStreamTask.java:61) >> >> at >> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30) >> >> ... 3 more >> >> Caused by: java.lang.OutOfMemoryError: Map failed >> >> at sun.nio.ch.FileChannelImpl.map0(Native Method) >> >> at >> sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:755) >> >> ... 8 more > > > -- > Riptano > Software and Support for Apache Cassandra > http://www.riptano.com/ > mden...@riptano.com > m: 512.587.0900 f: 866.583.2068 > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
