{"id":20006,"date":"2018-06-26T14:23:52","date_gmt":"2018-06-26T14:23:52","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=20006"},"modified":"2018-06-26T14:23:52","modified_gmt":"2018-06-26T14:23:52","slug":"hcatalog-features","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/hcatalog-features\/","title":{"rendered":"Top 10 HCatalog Features | Why HCatalog is Popular"},"content":{"rendered":"

In our last HCatalog Tutorial<\/strong>, we discussed HCatalog Command line interface.<\/strong>\u00a0Today, we will discuss HCatalog Features.<\/p>\n

There is always a question occurs that why HCatalog is so popular now-a-days. So, in this HCatalog article, we will learn Top 10 Features of HCatalog which makes it best to use.<\/p>\n

So, let’s start HCatalog features.<\/p>\n

HCatalog Features<\/span><\/h2>\n

Here is the list of Features of HCatalog:<\/span><\/p>\n

i. Table and Storage Management Layer <\/span><\/h3>\n

Basically, it plays a role as a table and storage management layer for Hadoop<\/strong>. And, to make the read and write data on the grid easier, it further enables users with different data processing tools, for example,\u00a0Pig<\/strong>,\u00a0MapReduce<\/strong>, and also Hive<\/strong>.<\/span><\/p>\n

ii. Table Abstraction Layer<\/span><\/h3>\n

Moreover, it creates a table abstraction layer over data which is stored on an HDFS <\/strong>cluster.\u00a0Basically, this layer presents the data in a familiar relational format.\u00a0Also, using familiar query language concepts, make the read and write data easier.<\/span><\/p>\n

iii. Any Format<\/span><\/h3>\n

While working with HCatalog, we need not worry about where or in what format our data is stored. It shows data from the RCFile format, text files, or sequence files in a tabular view. Also, it offers REST APIs to make easy access to these tables\u2019 metadata through external systems.<\/span><\/p>\n

iv. \u00a0Shared Schema and Data Types<\/span><\/h3>\n

One of the best features is that, for Hadoop tools,\u00a0 it\u00a0offers shared schema as well as data types.\u00a0So, there is no need to type the data structures in each program, explicitly.<\/span><\/p>\n

v. Integration With Other Tools<\/span><\/h3>\n

Also, it\u00a0offers integration with other tools and do supply read and write interfaces for Pig, Hive, as well as Map\/Reduce as an advantage.<\/span><\/p>\n

vi. Expose the Information<\/span><\/h3>\n

Moreover,\u00a0\u00a0for external access, HCatalog exposes the information as Rest Interface.<\/span><\/p>\n

vii. Binary Format <\/span><\/h3>\n

In addition, without interpreting or translating it, HCatalog supports for storing data in binary format also. <\/span><\/p>\n

viii. Authentication <\/span><\/h3>\n

While it comes to authentication of user identity, HCatalog offers Kerberos based authentication.<\/span><\/p>\n

ix. Adding Columns to Partitions<\/span><\/h3>\n

Furthermore, even without requiring restating of existing stored data, HCatalog support for adding columns to partitions. <\/span><\/p>\n

x. Hive Tables<\/span><\/h3>\n

Also, it helps to support HBase tables as Hive tables<\/strong>.<\/span>
\nSo, this is all about\u00a0HCatalog Features.<\/p>\n

Conclusion<\/span><\/h2>\n

Hence, we have learned the best HCatalog Features which make it best to use. Now, we got the answers for the popularity of HCatalog with these features of HCatalog. Still, if any doubt regarding HCatalog Features, ask in the comment tab.<\/p>\n","protected":false},"excerpt":{"rendered":"

In our last HCatalog Tutorial, we discussed HCatalog Command line interface.\u00a0Today, we will discuss HCatalog Features. There is always a question occurs that why HCatalog is so popular now-a-days. So, in this HCatalog article,...<\/p>\n","protected":false},"author":7,"featured_media":20198,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[4597,5514,5535,9568,15743,16147,16148],"class_list":["post-20006","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hcatalog","tag-features-of-hcatalog","tag-hcatalog-features","tag-hcatalog-tutorial","tag-popularity-of-hcatalog","tag-what-is-hcatalog","tag-why-hcatalog","tag-why-hcatalog-is-so-popular"],"yoast_head":"\nTop 10 HCatalog Features | Why HCatalog is Popular - DataFlair<\/title>\n<meta name=\"description\" content=\"HCatalog Features, Why HCatalog, reasons for the Popularity of HCatalog, top 10 features of HCatalog, HCatalog Tutorial, Apache HCatalog\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/data-flair.training\/blogs\/hcatalog-features\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Top 10 HCatalog Features | Why HCatalog is Popular - 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