> If you use the remove function to delete an entire row, is that an atomic > operation?
Yes. Row level deletes are atomic. cheers ----------------- Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 17/08/2012, at 3:39 PM, Derek Williams <de...@fyrie.net> wrote: > On Thu, Aug 16, 2012 at 9:08 PM, Terry Cumaranatunge <cumar...@gmail.com> > wrote: > We have a Cassandra 1.0 cluster that we run with RF=3 and perform operations > using a consistency level of quorum. We use batch_mutate for all inserts and > updates for atomicity across column families with the same row key, but use > the thrift interface remove API call in C++ to delete a row so that we can > delete an entire row without having to specify individual column names. If > you use the remove function to delete an entire row, is that an atomic > operation? In other words, can it delete a partial number of columns in the > row and leave other columns around? > > It all depends on the timestamp for the column. A row level delete will place > a row tombstone at the timestamp given, causing all columns with an earlier > timestamp to be deleted. If a column has a later timestamp then the row > tombstone, then it wont be deleted. > > More info here: http://wiki.apache.org/cassandra/DistributedDeletes > > -- > Derek Williams >
