Search International and National Patent Collections

1. (WO2018200475) SYSTEM AND METHOD TO ACCELERATE COMPACTION

Pub. No.:    WO/2018/200475    International Application No.:    PCT/US2018/029074
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Wed Apr 25 01:59:59 CEST 2018
IPC: G06F 7/00
G06F 17/30
G06F 12/00
G06F 13/00
G06F 21/76
Applicants: RENIAC, INC.
Inventors: KULKARNI, Chidamber
SUNDARARAJAN, Prasanna
Title: SYSTEM AND METHOD TO ACCELERATE COMPACTION
Abstract:
A system and method for accelerating compaction includes a compaction accelerator. The accelerator includes a compactor separate from a processor performing read and write operations for a database or a data store. The compactor is configured to receive a table to be compacted and entries written in the table, each of the entries being associated with a timestamp indicating when they were respectively written; identify, using a plurality of sort engines operating in parallel, the entries that were written last based on the timestamps; mark, using a plurality of marker engines operating in parallel, older copies of the entries for deletion; create, using the plurality of marker engines, tombstones for the older copies; create a compacted table, including the entries that were last written; delete the tombstones and the entries associated with the tombstones; and generate a freemap based on storage locations of the entries associated with the tombstones.