Hadoop and MapReduce Extra Credits (2 points)
Name:________________________
Liao
Puyn
Follow along with the videos and answer all questions below, and bring back next class!
6. How many times Hadoop replicates each block
within a HDFS? _____
3 copies
7. What is the HDFS block size in this video?
___ MB, this is the default for Apache Hadoop.
64
8. Try your best to draw how Hadoop file system works
with data nodes, name nodes, and build-in redundancy,
etc.
S
↓X
⑳
⑧ ↓
⑱
⑧
Block
~
patanode.