Hadoop Questions and Answers – Metrics in Hbase

This set of Interview Questions & Answers focuses on “Metrics in Hbase”.

1. _______ can change the maximum number of cells of a column family.
a) set
b) reset
c) alter
d) select
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2. Point out the correct statement.
a) You can add a column family to a table using the method addColumn()
b) Using alter, you can also create a column family
c) Using disable-all, you can truncate a column family
d) None of the mentioned
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3. Which of the following is not a table scope operator?
a) MEMSTORE_FLUSH
b) MEMSTORE_FLUSHSIZE
c) MAX_FILESIZE
d) All of the mentioned
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4. You can delete a column family from a table using the method _________ of HBAseAdmin class.
a) delColumn()
b) removeColumn()
c) deleteColumn()
d) all of the mentioned
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5. Point out the wrong statement.
a) To read data from an HBase table, use the get() method of the HTable class
b) You can retrieve data from the HBase table using the get() method of the HTable class
c) While retrieving data, you can get a single row by id, or get a set of rows by a set of row ids, or scan an entire table or a subset of rows
d) None of the mentioned
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6. __________ class adds HBase configuration files to its object.
a) Configuration
b) Collector
c) Component
d) None of the mentioned
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7. The ________ class provides the getValue() method to read the values from its instance.
a) Get
b) Result
c) Put
d) Value
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8. ________ communicate with the client and handle data-related operations.
a) Master Server
b) Region Server
c) Htable
d) All of the mentioned
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9. _________ is the main configuration file of HBase.
a) hbase.xml
b) hbase-site.xml
c) hbase-site-conf.xml
d) none of the mentioned
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10. HBase uses the _______ File System to store its data.
a) Hive
b) Imphala
c) Hadoop
d) Scala
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