Action on data

Select the action to be performed on the data to be written in the Hive
table.

With the Insert option, the data to be
written in the Hive table will be appended to the existing data if there is any.

Schema

A schema is a row description. It defines the number of fields
to be processed and passed on to the next component. The schema is either
Built-in or stored remotely in the
Repository.

Built-In: You create and store the
schema locally for this component only. Related topic: see
Talend Studio

User Guide.

Repository: You have already created
the schema and stored it in the Repository. You can reuse it in various projects and
Job designs. Related topic: see
Talend Studio

User Guide.

Edit schema

Click Edit schema to make changes to the schema.
If the current schema is of the Repository type, three
options are available:

• View schema: choose this option to view the
  schema only.

• Change to built-in property: choose this
  option to change the schema to Built-in for
  local changes.

• Update repository connection: choose this
  option to change the schema stored in the repository and decide whether to propagate
  the changes to all the Jobs upon completion. If you just want to propagate the
  changes to the current Job, you can select No
  upon completion and choose this schema metadata again in the [Repository Content] window.

Default table name

Enter the default name of the output table you want to write
data in.

Default schema name

Enter the name of the default database schema to which the
output table to be used is related to.

Table name from connection name is variable

Select this check box when the name of the connection to this component is
set to a variable, such as a context variable.

Use different table name

Select this check box to define a different output table name,
between double quotation marks, in the Table
name field that appears.

If this table is related to a different database schema from
the default one, you also need to enter the name of that database schema. The
syntax is schema_name.table_name.

The target table uses the Parquet format

If the table in which you need to write data is a Parquet table, select this check box.

Then from the Compression list that appears, select the
compression mode you need to use to handle the Parquet file. The default mode is Uncompressed.

Field Partition

In Partition Column,
enter the name, without any quotation marks, of the partition column of the
Hive table you want to write data in.

In Partition Value,
enter the value you want to use, in single quotation marks, for its
corresponding partition column.

Mapping

Specify the metadata mapping file for the database
to be used. The metadata mapping file is used for the data type conversion
between database and Java. For more information about the metadata mapping,
see the related documentation for Type mapping.

tStatCatcher Statistics

Select this check box to collect log data at the component
level.

Global Variables

ERROR_MESSAGE: the error message generated by the
component when an error occurs. This is an After variable and it returns a string. This
variable functions only if the Die on error check box is
cleared, if the component has this check box.

A Flow variable functions during the execution of a component while an After variable
functions after the execution of the component.

To fill up a field or expression with a variable, press Ctrl +
Space to access the variable list and choose the variable to use from it.

For further information about variables, see
Talend Studio

User Guide.

Usage rule

tELTHiveMap is used along with a
tELTHiveInput and tELTHiveOutput. Note that the Output link
to be used with these components must correspond strictly to the
syntax of the table name.

If the Studio used to connect to a Hive database is operated on Windows, you
must manually create a folder called tmp in the root of the disk
where this Studio is installed.