1.What are the different types of tables available in HIve? There are two types. Managed table and external table. In managed table both the data an schema in under control …
41.In PCB which field is used to store the level of the segment that was processed? Segment level is known as Segment Hierarchy Level Indicator. It contains character data and …
31.How can we access the data in IMS DB? Data can be processed in both the ways: Sequential & Random.
21.What is the return code you get after a successful IMS call? We receive spaces after a successful call.
11.What is the use of PROCOPT? Procopt parameter specifies PROCESSING OPTIONS that define the type of processing performed on a segment.
1.What is a hierarchy path? Hierarchy path is a line that starts at the root, passes through the intermediate levels in the hierarchy, and ends at a segment at the …
41.What does “file could only be replicated to 0 nodes, instead of 1” mean? The namenode does not have any available DataNodes.
31.Default replication factor to a file is 3. Use ‘-setrep’ command to change replication factor of a file to 2. hadoop fs -setrep -w 2 apache_hadoop/sample.txt
21.What is a ‘block’ in HDFS? A ‘block’ is the minimum amount of data that can be read or written. In HDFS, the default block size is 64 MB as …
11.What is Fault Tolerance? Suppose you have a file stored in a system, and due to some technical problem that file gets destroyed. Then there is no chance of getting …
