14 of a chunk oset is specied by gfs november 5th

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: axed Consistency –  Chunks are stored as local files –  Linux’s buffer cache already keeps frequently accessed data in memory L23.13 Colorado State University, Sangmi Pallickara 2/8/13 CS480 Principles of Data Management Spring 2013 L23.14 November 5th, 2012 CS480 Principles of Data Management Spring 2013 In GFS the state of file region after mutation depends on … Mutations •  Muta%on changes the content or metadata of a chunk •  TYPE of the mutaIon •  SUCCESS/FAILURE of the mutaIon •  Whether there were CONCURRENT mutaIons –  Write •  Writes data at an applicaIon ­specific file offset –  Append •  Appends atomically at least once even in the presence of concurrent mutaIon •  Each mutaIon is performed at all chunk replicas •  Append is done based on record. (1/4 of a chunk) –  Offset is specified by GFS November 5th, 2012 CS480 Principles of D...
View Full Document

This note was uploaded on 02/11/2014 for the course CS 480 taught by Professor Staff during the Spring '08 term at Colorado State.

Ask a homework question - tutors are online