Table of Contents
Secondary name node
Uses
How it works
Secondary name node
See
Name node
.
NOT HIGH AVAILBILITY
Uses
“System restore” for
Name node
Resopnsibole of keeping less dataloss if the
Name node
is failed
How it works
Structure
fsImage
Edit Logs
Every hour copy
Edit log
and
fsImage
from
Name node
If
Name node
failed - marges
fsImage
with
Edit log
of
Secondary name node
and reconstruct the
Name node
