What's the 'ulimit -a' output of the user cassandra runs as? From this and your previous OOM thread, is sounds like you skipped the requisite OS configuration.
On Wed, Sep 17, 2014 at 9:43 AM, Yatong Zhang <bluefl...@gmail.com> wrote: > Hi there, > > I am using leveled compaction strategy and have many sstable files. The > error was during the startup, so any idea about this? > > >> ERROR [FlushWriter:4] 2014-09-17 22:36:59,383 CassandraDaemon.java (line >> 199) Exception in thread Thread[FlushWriter:4,5,main] >> java.lang.OutOfMemoryError: unable to create new native thread >> at java.lang.Thread.start0(Native Method) >> at java.lang.Thread.start(Thread.java:693) >> at >> java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:949) >> at >> java.util.concurrent.ThreadPoolExecutor.processWorkerExit(ThreadPoolExecutor.java:1017) >> at >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1163) >> at >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) >> at java.lang.Thread.run(Thread.java:724) >> ERROR [FlushWriter:2] 2014-09-17 22:36:59,472 CassandraDaemon.java (line >> 199) Exception in thread Thread[FlushWriter:2,5,main] >> FSReadError in >> /data5/cass/system/compactions_in_progress/system-compactions_in_progress-jb-23-Index.db >> at >> org.apache.cassandra.io.util.MmappedSegmentedFile$Builder.createSegments(MmappedSegmentedFile.java:200) >> at >> org.apache.cassandra.io.util.MmappedSegmentedFile$Builder.complete(MmappedSegmentedFile.java:168) >> at >> org.apache.cassandra.io.sstable.SSTableWriter.closeAndOpenReader(SSTableWriter.java:334) >> at >> org.apache.cassandra.io.sstable.SSTableWriter.closeAndOpenReader(SSTableWriter.java:324) >> at >> org.apache.cassandra.db.Memtable$FlushRunnable.writeSortedContents(Memtable.java:394) >> at >> org.apache.cassandra.db.Memtable$FlushRunnable.runWith(Memtable.java:342) >> at >> org.apache.cassandra.io.util.DiskAwareRunnable.runMayThrow(DiskAwareRunnable.java:48) >> at >> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) >> at >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) >> at >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) >> at java.lang.Thread.run(Thread.java:724) >> Caused by: java.io.IOException: Map failed >> at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:849) >> at >> org.apache.cassandra.io.util.MmappedSegmentedFile$Builder.createSegments(MmappedSegmentedFile.java:192) >> ... 10 more >> Caused by: java.lang.OutOfMemoryError: Map failed >> at sun.nio.ch.FileChannelImpl.map0(Native Method) >> at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:846) >> ... 11 more >> > >
