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Hadoop
Basic Hadoop
Quiz 1
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Q.1
__________ is a REST API for HCatalog.
a) WebHCat
b) WbHCat
c) InpHCat
d) None of the mentioned
Q.2
Point out the correct statement.
a) There is no guaranteed read consistency when a partition is dropped
b) Unpartitioned tables effectively have one default partition that must be created at table creation time
c) Once a partition is created, records cannot be added to it, removed from it, or updated in it
d) All of the mentioned
Q.3
With HCatalog _________ does not need to modify the table structure.
a) Partition
b) Columns
c) Robert
d) All of the mentioned
Q.4
Sally in data processing uses __________ to cleanse and prepare the data.
a) Pig
b) Hive
c) HCatalog
d) Impala
Q.5
Point out the wrong statement.
a) The original name of WebHCat was Templeton
b) Robert in client management uses Hive to analyze his clients’ results
c) With HCatalog, HCatalog cannot send a JMS message that data is available
d) All of the mentioned
Q.6
For ___________ partitioning jobs, simply specifying a custom directory is not good enough.
a) static
b) semi cluster
c) dynamic
d) all of the mentioned
Q.7
___________ property allows us to specify a custom dir location pattern for all the writes, and will interpolate each variable.
a) hcat.dynamic.partitioning.custom.pattern
b) hcat.append.limit
c) hcat.pig.storer.external.location
d) hcatalog.hive.client.cache.expiry.time
Q.8
HCatalog maintains a cache of _________ to talk to the metastore.
a) HiveServer
b) HiveClients
c) HCatClients
d) All of the mentioned
Q.9
On the write side, it is expected that the user pass in valid _________ with data correctly.
a) HRecords
b) HCatRecos
c) HCatRecords
d) None of the mentioned
Q.10
A float parameter, defaults to 0.0001f, which means we can deal with 1 error every __________ rows.
a) 1000
b) 10000
c) 1 million rows
d) None of the mentioned
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