On Thu, Apr 29, 2010 at 8:01 AM, Boris Shulman <shulm...@gmail.com> wrote: > Hi, > I've noticed that the writing commit log is performed for a 'row', > i.e. list of ColumnFamilies for a key in: 'public > CommitLogSegment.CommitLogContext write(RowMutation rowMutation, > Object serializedRow).' > Does that mean that writes are atomic for a row and not for a CF?
Yes. > What > will happen if a failure will occur after writing the headers but > before writing the data & checksum? Headers are only written after flush, so the question doesn't make sense. > What will happen if the failure > will occur after writing the data but before the checksum? Is the > write op considered committed only after checksum is written? Yes. -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
