What is your sstable size set to for each of the sstables, using LCS? Are you at the default of 5 MB?
Rahul Neelakantan > On Sep 17, 2014, at 10:58 AM, Yatong Zhang <bluefl...@gmail.com> wrote: > > sorry, about 300k+ > >> On Wed, Sep 17, 2014 at 10:56 PM, Yatong Zhang <bluefl...@gmail.com> wrote: >> no, I am running 64 bit JVM。 But I have many sstable files, about 30k+ >> >>> On Wed, Sep 17, 2014 at 10:50 PM, graham sanderson <gra...@vast.com> wrote: >>> Are you running on a 32 bit JVM? >>> >>>> On 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 >
