Hadoop interview questions part 5
Hadoop interview questions part 5
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Total Questions: 20
1. The Apache Jenkins server runs the ______________ job whenever code is committed to the trunk branch.
Correct Answer is : “Bigtop-trunk”
2. The Bigtop Jenkins server runs daily jobs for the _______ and trunk branches.
Correct Answer is : 0.3
3. Which of the following builds an APT or YUM package repository ?
Correct Answer is : Bigtop-trunk-repository
4. ___________ builds virtual machines of branches trunk and 0.3 for KVM, VMWare and VirtualBox.
Correct Answer is : Bigtop-VM-matrix
5. A _________ grants initial permissions, and subsequently a user may or may not be given the permission to grant/revoke permissions.
Correct Answer is : superuser
6. Point out the correct statement :
Correct Answer is : Cassandra uses a storage structure similar to a Log-Structured Merge Tree
7. __________ is one of many possible IAuthorizer implementations, and the one that stores permissions in the system_auth.permissions table to support all authorization-related CQL statements.
Correct Answer is : CassandraAuthorizer
8. Cassandra creates a ___________ for each table, which allows you to symlink a table to a chosen physical drive or data volume.
Correct Answer is : subdirectory
9. Point out the wrong statement :
Correct Answer is : The hinted handoff feature and Cassandra conformance and conformance to the ACID
10. When ___________ contents exceed a configurable threshold, the memtable data, which includes indexes, is put in a queue to be flushed to disk
Correct Answer is : memtable
11. Data in the commit log is purged after its corresponding data in the memtable is flushed to an _________ .
Correct Answer is : SSTable
12. For each SSTable, Cassandra creates _________ index .
Correct Answer is : partition
13. Cassandra marks data to be deleted using :
Correct Answer is : tombstone
14. Tombstones exist for a configured time period defined by the _______ value set on the table.
Correct Answer is : gc_grace_seconds
15. _________ is a Cassandra feature that optimizes the cluster consistency process
Correct Answer is : Hinted handoff
16. Point out the correct statement :
Correct Answer is : All of the mentioned
17. Cassandra searches the __________ to determine the approximate location on disk of the index entry.
Correct Answer is : partition summary
18. You configure sample frequency by changing the ________ property in the table definition.
Correct Answer is : index_interval
19. Point out the wrong statement :
Correct Answer is : When the cluster cannot meet the consistency level specified by the client, Cassandra does store a hint
20. The compression offset map grows to ____ GB per terabyte compressed.
Correct Answer is : 45294
