COMP5349_2014 Semester1_week3_lecture_03_gfs_hdfs

Outline

!?Introduction to MapReduce & Hadoop !?GFS Overall Architecture

!?Scalability and Consistency Strategies !?High Availability Strategy

!?Measurements

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??Client translates file name and byte offset to chunk index. lease

COMP5349 "Cloud Computing" - 2014 (U. R?hm)

COMP5349 "Cloud Computing" - 2014 (U. R?hm)

Very small meta data on master Individual chunkserver

meta data is also small Master is not a bottleneck.