Sounds like you changed your partitioner type after it already had data from the old one in it.
On Fri, May 14, 2010 at 6:12 PM, AJ Chen <ajc...@web2express.org> wrote: > when starting cassandra, there is "Keys must be written in ascending order." > error. and, when my application reads the datastore, it throws outofmemory > exception. > what causes this error? how should I go about to fix the problem? thanks, > -aj > > INFO 15:55:19,713 Creating new commitlog segment > C:\dev\content\cassandra\commitlog\CommitLog-1273877719713.log > INFO 15:55:19,822 Last written key : > DecoratedKey(61078635599166706937511052402724559481:L, > 61078635599166706937511052402724559481:L) > INFO 15:55:19,822 Current key : > DecoratedKey(136380791207214638541884810421800860241:Bootstrap, > 136380791207214638541884810421800860241:Bootstrap) > INFO 15:55:19,822 Writing into file > C:\dev\content\cassandra\data\system\LocationInfo-tmp-10-Data.db > ERROR 15:55:20,385 Error in executor futuretask > java.util.concurrent.ExecutionException: java.io.IOException: Keys must be > written in ascending order. > at > java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222) > at java.util.concurrent.FutureTask.get(FutureTask.java:83) > at > org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor.afterExecute(DebuggableThreadPoolExecutor.java:86) > at > org.apache.cassandra.db.CompactionManager$CompactionExecutor.afterExecute(CompactionManager.java:582) > at > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:888) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) > at java.lang.Thread.run(Thread.java:619) > Caused by: java.io.IOException: Keys must be written in ascending order. > at > org.apache.cassandra.io.SSTableWriter.beforeAppend(SSTableWriter.java:71) > at > org.apache.cassandra.io.SSTableWriter.append(SSTableWriter.java:95) > at > org.apache.cassandra.db.CompactionManager.doCompaction(CompactionManager.java:304) > at > org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:102) > at > org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:83) > at > java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) > at java.util.concurrent.FutureTask.run(FutureTask.java:138) > > > -- > AJ Chen, PhD > Chair, Semantic Web SIG, sdforum.org > http://web2express.org > twitter @web2express > Palo Alto, CA, USA > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
