Midterm Quizzes Flashcards
TF GFS does support the complete standard APIs such as POSIX
false
TF the master in GFS maintains the locations of chunks only in the memory
T
TF A GFS1 cluster consists of a single master and multiple chunk servers
T
TF GFS garuntees that all the replicas of a chunk are stored in a single chunk server
F
TF CAP theorem states its impossible to provide all 3 of consistancy, atomicity, and partition tolerance
F
list all the R and W locks required to preform this snapshot
TF In hadoops YARN, when a mapreduce job is createdm the users JAR file is passsed to the resource manager as one of its parameters
true
TF in hadoops YARN implementation, the node manager peroidicly pings the yarnchild to monitor the task
F
In hadoop yarn framwork, if the reducers just completed the copy phase, what would the progress estimated by YARN for the reduce phase
1/3
TF The hadoops combiner must have the same input and output format as that of the mappers output
T
TF In hadoop YARN framework, a single partition is allowed to contain only one key
False
in a transition matrix M for pagerank what is m_ij
The probability that a surfer at node j will move to node i in the next step
in the pagerank equation, what is v_j
the probablity that the surfer was at node j at the previous step
2 poss with a bloom filter
might be part of a set
not a part of set
4 modulo 15
4
process to test this
do each hash function
If all 3 match up with a 1 then might be mem of set
if any are 0, then not member of set
