How do I load data from HDFS to Hive external table?

How do I load data from HDFS to Hive external table?

Load Data into Hive Table from HDFS

  1. Create a folder on HDFS under /user/cloudera HDFS Path.
  2. Move the text file from local file system into newly created folder called javachain.
  3. Create Empty table STUDENT in HIVE.
  4. Load Data from HDFS path into HIVE TABLE.
  5. Select the values in the Hive table.

Which Hive command will load data from an HDFS file directory to the table?

load data inpath command
load data inpath command is use to load data into hive table. ‘LOCAL’ signifies that the input file is on the local file system. If ‘LOCAL’ is omitted then it looks for the file in HDFS. load data inpath ‘/directory-path/file.

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How do I query an external table in Hive?

The external table data is stored externally, while Hive metastore only contains the metadata schema….How to Query a Hive External Table.

Function Syntax
Query a table according to multiple conditions select * from [table_name] where [condition1] and [condition2];

Which command is used to load the data from local file system?

Use the Hadoop shell commands to import data from the local system into the distributed file system. You can use either the -put command or the -copyFromLocal command from the hadoop fs commands to move a local file or directory into the distributed file system.

What is external table?

An external table is a table whose data come from flat files stored outside of the database. Oracle can parse any file format supported by the SQL*Loader.

What is location in Hive external table?

External tables are stored outside the warehouse directory. They can access data stored in sources such as remote HDFS locations or Azure Storage Volumes. Whenever we drop the external table, then only the metadata associated with the table will get deleted, the table data remains untouched by Hive.

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How do I load a CSV file into hive using spark Scala?

Import CSV Files into HIVE Using Spark

  1. The first step imports functions necessary for Spark DataFrame operations: >>> from pyspark.sql import HiveContext >>> from pyspark.sql.types import * >>> from pyspark.sql import Row.
  2. The RDD can be confirmed by using the type() command: >>> type(csv_data)

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