Means Cassandra couldn't create an empty file in the data directory designating a sstable as compacted. I'd look for permissions problems.
Short term there is no dire consequence, although it will keep re-compacting that sstable. Longer term you'll run out of disk space since nothing gets deleted. On Wed, Sep 21, 2011 at 1:44 PM, Daning <dan...@netseer.com> wrote: > I got this exception in system.log several times a day, do you have idea > what caused this problem and what is the consequence? > > > ERROR [CompactionExecutor:12] 2011-09-15 14:29:19,578 > AbstractCassandraDaemon.java (line 139) Fatal exception in thread > Thread[CompactionExecutor:12,1,main] > java.io.IOError: java.io.IOException: Unable to create compaction marker > at > org.apache.cassandra.io.sstable.SSTableReader.markCompacted(SSTableReader.java:642) > at > org.apache.cassandra.db.DataTracker.removeOldSSTablesSize(DataTracker.java:280) > at org.apache.cassandra.db.DataTracker.replace(DataTracker.java:253) > at > org.apache.cassandra.db.DataTracker.replaceCompactedSSTables(DataTracker.java:214) > at > org.apache.cassandra.db.ColumnFamilyStore.replaceCompactedSSTables(ColumnFamilyStore.java:1094) > at > org.apache.cassandra.db.compaction.CompactionManager.doCompactionWithoutSizeEstimation(CompactionManager.java:599) > at > org.apache.cassandra.db.compaction.CompactionManager.doCompaction(CompactionManager.java:507) > at > org.apache.cassandra.db.compaction.CompactionManager$1.call(CompactionManager.java:142) > at > org.apache.cassandra.db.compaction.CompactionManager$1.call(CompactionManager.java:108) > at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) > at java.util.concurrent.FutureTask.run(Unknown Source) > at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown > Source) > at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) > at java.lang.Thread.run(Unknown Source) > Caused by: java.io.IOException: Unable to create compaction marker > at > org.apache.cassandra.io.sstable.SSTableReader.markCompacted(SSTableReader.java:638) > ... 13 more > > > Thank you in advance. > > Daning > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com
