> First, Cassandra suddenly dies during compaction. Java core dump says that > the last thread run was "COMPACTION-POOL:1". > I suspect that my business logic could lead size of columns in a column > family per a row to be greater than two gigabytes. (but i couldn't confirm > it yet)
Are you running out of memory (java heap)? If you're running cassandra with default options, it will be running with -XX:+HeapDumpOnOutOfMemoryError Have you checked the cassandra system.log for garbage collection messages? What is in the last minute or two of logs? -- / Peter Schuller