Introduction to Apache Hive
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Hive is a data warehouse infrastructure built on top of Hadoop for providing data summarization, query, and analysis. It presents a SQL-like interface for querying data stored in various databases and file systems that integrate with Hadoop. The document provides links to Hive documentation, tutorials, presentations and other resources for learning about and using Hive. It also includes a table describing common Hive CLI commands and their usage.
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Introduction to Apache Hive
- 4. MapReduce
- 23. Command Description quit Use quit or exit to leave the interactive shell. set key=value Use this to set value of particular configuration variable. One thing to note here is that if you misspell the variable name, cli will not show an error. set This will print a list of configuration variables that are overridden by user or hive. set -v This will print all hadoop and hive configuration variables. add FILE [file] [file]* Adds a file to the list of resources list FILE list all the files added to the distributed cache list FILE [file]* Check if given resources are already added to distributed cache ! [cmd] Executes a shell command from the hive shell dfs [dfs cmd] Executes a dfs command from the hive shell [query] Executes a hive query and prints results to standard out source FILE Used to execute a script file inside the CLI.