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____________ method will be called by Pig both in the front end and back end to pass a unique signature to the Loader.
(a) relativeToAbsolutePath()
(b) setUdfContextSignature()
(c) getCacheFiles()
(d) getShipFiles()
The correct choice is (b) setUdfContextSignature()The explanation is: The signature can be used to store into the UDFContext any information which the Loader needs to store between various method invocations in the front end and back end.
The correct choice is (b) setUdfContextSignature()
The explanation is: The signature can be used to store into the UDFContext any information which the Loader needs to store between various method invocations in the front end and back end.
See lessAvro supports ______ kinds of complex types.
(a) 3
(b) 4
(c) 6
(d) 7
Correct option is (d) 7To elaborate: Avro supports six kinds of complex types: records, enums, arrays, maps, unions and fixed.
Correct option is (d) 7
To elaborate: Avro supports six kinds of complex types: records, enums, arrays, maps, unions and fixed.
See lessTypes that may be null must be defined as a ______ of that type and Null within Avro.
(a) Union
(b) Intersection
(c) Set
(d) All of the mentioned
Correct choice is (a) UnionEasiest explanation: A null in a field that is not so defined will result in an exception during the save. No changes need be made to the Hive schema to support this, as all fields in Hive can be null.
Correct choice is (a) Union
Easiest explanation: A null in a field that is not so defined will result in an exception during the save. No changes need be made to the Hive schema to support this, as all fields in Hive can be null.
See lessPoint out the correct statement.
(a) Hadoop is ideal for the analytical, post-operational, data-warehouse-ish type of workload
(b) HDFS runs on a small cluster of commodity-class nodes
(c) NEWSQL is frequently the collection point for big data
(d) None of the mentioned
The correct answer is (a) Hadoop is ideal for the analytical, post-operational, data-warehouse-ish type of workloadFor explanation I would say: Hadoop together with a relational data warehouse, they can form very effective data warehouse infrastructure.
The correct answer is (a) Hadoop is ideal for the analytical, post-operational, data-warehouse-ish type of workload
For explanation I would say: Hadoop together with a relational data warehouse, they can form very effective data warehouse infrastructure.
See lessPoint out the correct statement.
(a) Mahout is distributed under a commercially friendly Apache Software license
(b) Mahout is a library of scalable machine-learning algorithms, implemented on top of Apache Hadoop® and using the MapReduce paradigm
(c) Apache Mahout is a project of the Apache Software Foundation to produce free implementations of distributed or otherwise scalable machine learning algorithms
(d) None of the mentioned
Correct choice is (d) None of the mentionedThe explanation is: The goal of Mahout is to build a vibrant, responsive, diverse community to facilitate discussions not only on the project itself but also on potential use cases.
Correct choice is (d) None of the mentioned
The explanation is: The goal of Mahout is to build a vibrant, responsive, diverse community to facilitate discussions not only on the project itself but also on potential use cases.
See lessThe __________ provides a proxy between the web applications exported by an application and an end user.
(a) ProxyServer
(b) WebAppProxy
(c) WebProxy
(d) None of the mentioned
Correct option is (b) WebAppProxyExplanation: If security is enabled it will warn users before accessing a potentially unsafe web application. Authentication and authorization using the proxy is handled just like any other privileged web application.
Correct option is (b) WebAppProxy
Explanation: If security is enabled it will warn users before accessing a potentially unsafe web application. Authentication and authorization using the proxy is handled just like any other privileged web application.
See less__________ maps input key/value pairs to a set of intermediate key/value pairs.
(a) Mapper
(b) Reducer
(c) Both Mapper and Reducer
(d) None of the mentioned
Right option is (a) MapperThe explanation is: Maps are the individual tasks that transform input records into intermediate records.
Right option is (a) Mapper
The explanation is: Maps are the individual tasks that transform input records into intermediate records.
See lessPoint out the correct statement.
(a) BooleanSerializer is used to parse string representations of boolean values into boolean scalar types
(b) BlobRef is a wrapper that holds a BLOB either directly
(c) BooleanParse is used to parse string representations of boolean values into boolean scalar types
(d) All of the mentioned
Correct choice is (b) BlobRef is a wrapper that holds a BLOB either directlyThe best I can explain: BlobRef is used for reference to a file that holds the BLOB data.
Correct choice is (b) BlobRef is a wrapper that holds a BLOB either directly
The best I can explain: BlobRef is used for reference to a file that holds the BLOB data.
See lessA __________ determines which data centers and racks nodes belong to it.
(a) Client requests
(b) Snitch
(c) Partitioner
(d) None of the mentioned
Right option is (b) SnitchThe best I can explain: Client read or write requests can be sent to any node in the cluster because all nodes in Cassandra are peers.
Right option is (b) Snitch
The best I can explain: Client read or write requests can be sent to any node in the cluster because all nodes in Cassandra are peers.
See less__________ is a columnar storage format for Hadoop.
(a) Ranger
(b) Parquet
(c) REEF
(d) None of the mentioned
The correct option is (b) ParquetThe explanation is: The Ranger project is a framework to enable, monitor and manage comprehensive data security across the Hadoop platform.
The correct option is (b) Parquet
The explanation is: The Ranger project is a framework to enable, monitor and manage comprehensive data security across the Hadoop platform.
See less