Patent attributes
A distributed database system may implement reduced transaction I/O. In various embodiments, a plurality of log records may be stored in persistent storage for a plurality of pages of a log-structured storage system. A coalesce operation may be performed for at least some of the plurality of data pages for the log-structured storage system. The coalesce operation may, in some embodiments, coalesce two or more log records for one of the plurality of pages to generate an instance of the page and store the instance of the page to a new location in the persistent storage. Log records for one or more of the plurality of pages may be excluded from the coalesce operation. These excluded log records may not be dependent on a prior version of the page or portion of the page corresponding to the log record. Excluded log records may include one or more of redo records, undo records, or transaction table records.
