What is UDF function in hive
UDF stands for User-Defined Function in Hive. A UDF is a function that can be defined and used by a user to perform operations on data stored in Hive tables…. Read more »
UDF stands for User-Defined Function in Hive. A UDF is a function that can be defined and used by a user to perform operations on data stored in Hive tables…. Read more »
ACID (Atomicity, Consistency, Isolation, Durability) is a set of properties that ensure that database transactions are processed reliably. Atomicity requires that either all the operations in a transaction are completed… Read more »
Hive is a data warehousing and SQL-like query language component of Apache Hadoop. It provides a way to manage and query structured data stored in the Hadoop Distributed File System… Read more »
ACID (Atomicity, Consistency, Isolation, Durability) is a set of properties that ensure reliable and secure transaction processing in databases. The ACID properties provide a guarantee that transactions in a database… Read more »
Primitive data types: a. Numeric types: i. TINYINT ii. SMALLINT iii. INT iv. BIGINT v. FLOAT vi. DOUBLE b. String types: i. STRING ii. CHAR iii. VARCHAR c. Date and… Read more »
Vectorization in Hive is a performance optimization technique that allows Hive to process large amounts of data more efficiently. It works by processing multiple rows of data in a single… Read more »
SMB (Sort-Merge-Bucket) join in Hive is a type of join operation that is used when joining two large datasets that cannot fit into memory. The SMB join is performed in… Read more »
Map-side join in Hive is a technique used to improve the performance of join operations in large-scale data processing. In a map-side join, the join operation is performed by the… Read more »
Hive provides several optimization techniques that can be used to improve query performance. Here are some of the most commonly used optimization techniques in Hive: These are some of the… Read more »
Partitioning in Hive is a feature that enables you to divide a large table into smaller, more manageable pieces called “partitions.” Each partition is a sub-directory within the table’s directory… Read more »