# tHCatalogLoad (deprecated) Availability-note[Deprecated](https://help.talend.com/r/en-US/Cloud/labels-on-talend-help-center/availability-deprecated) This content is deprecated. Information noteDeprecation: This component is deprecated since the 8.0.1-R2024-08 release. Reads data directly from HDFS and writes this data into an established HCatalog managed table. This component is not shipped with your Talend Studio by default. You need to install it using the Feature Manager. For more information, see [Installing features using the Feature Manager](https://help.qlik.com/talend/r/en-US/8.0/studio-user-guide/install-features-to-talend-studio). ## tHCatalogLoad Standard properties These properties are used to configure tHCatalogLoad running in the Standard Job framework. The Standard tHCatalogLoad component belongs to the Big Data family. The component in this framework is available in all Talend products with Big Data and in Talend Data Fabric. ## Basic settings | Properties | Description | | --- | --- | | Property type | Either Built-in or Repository

Built-in: No property data stored
centrally.

Repository: Select the repository
file in which the properties are stored. The fields that follow are
completed automatically using the data retrieved. | | Distribution | Select the cluster you are using from the drop-down list. The options in the
list vary depending on the component you are using. Among these options, the following
ones requires specific configuration:

If available in this Distribution drop-down list, the Microsoft HD Insight option allows you to use a Microsoft HD Insight cluster. For this purpose, you need to configure the connections to the HD Insight cluster and the Windows Azure Storage service of that cluster in the areas that are displayed. For detailed explanation about these parameters, see Configuring the connection manually.
If you select Amazon EMR, find more details in Amazon EMR - Getting Started.
The Custom option allows you to connect to a cluster different from any of the distributions given in this list, that is to say, to connect to a cluster not officially supported by Talend .

Select Import from existing version to import an officially supported distribution as base and then add other required jar files which the base distribution does not provide.
Select Import from zip to import the configuration zip for the custom distribution to be used. This zip file should contain the libraries of the different Hadoop elements and the index file of these libraries.

Note that custom versions are not officially supported by Talend . Talend and its community provide you with the opportunity to connect to custom versions from Talend Studio but cannot guarantee that the configuration of whichever version you choose will be easy, due to the wide range of different Hadoop distributions and versions that are available. As such, you should only attempt to set up such a connection if you have sufficient Hadoop experience to handle any issues on your own.

Information noteNote:
In this dialog box, the active check box must be kept selected so as to import the jar files pertinent to the connection to be created between the custom distribution and this component.

For a step-by-step example about how to connect to a custom distribution and share this connection, see Hortonworks.

| | HCatalog version | Select the HBase version of the distribution you are using. | | Templeton hostname | Fill this field with the URL of Templeton Webservice.

Information noteNote:

Templeton is a webservice API for HCatalog. It has been renamed to WebHCat by the
Apache community. This service facilitates the access to HCatalog and the related Hadoop
elements such as Pig. For further information about Templeton (WebHCat), see https://cwiki.apache.org/confluence/display/Hive/WebHCat+UsingWebHCat. | | Templeton port | Fill this field with the port of URL of Templeton Webservice. By
default, this value is *50111*.

Information noteNote:

Templeton is a webservice API for HCatalog. It has been renamed to WebHCat by the
Apache community. This service facilitates the access to HCatalog and the related Hadoop
elements such as Pig. For further information about Templeton (WebHCat), see https://cwiki.apache.org/confluence/display/Hive/WebHCat+UsingWebHCat. | | Use kerberos authentication | If you are accessing the Hadoop cluster running with
Kerberos security, select this checkbox, then, enter the Kerberos principal name
for the NameNode in the field displayed. This enables you to use your username
to authenticate against the credentials stored in Kerberos.

This check box is available depending on the Hadoop distribution you are
connecting to. | | Use a keytab to authenticate | Select the Use a keytab to authenticate
checkbox to log into a Kerberos-enabled system using a given keytab file. A keytab
file contains pairs of Kerberos principals and encrypted keys. You need to enter the
principal to be used in the Principal field and
the access path to the keytab file itself in the Keytab field. This keytab file must be stored in the machine in
which your Job actually runs, for example, on a Talend JobServer.

Note that the user that executes a keytab-enabled Job is not necessarily
the one a principal designates but must have the right to read the keytab file being
used. For example, the username you are using to execute a Job is *user1* and the principal to be used is *guest*; in this
situation, ensure that *user1* has the right to read the keytab
file to be used. | | Database | Enter the name of the database you need to write data in. This
database must already exist. | | Table | Enter the name of the table you need to write data in. This table
must already exist. | | Partition | Fill this field to specify one or more partitions for the
partition operation on the specified table. When you specify
multiple partitions, use commas to separate every two partitions and
use double quotation marks to quote the partition string.

If you are reading a non-partitioned table, leave this field empty.

Information noteNote:

For further information about Partition, see https://cwiki.apache.org/Hive/. | | Username | Fill this field with the username for the DB
authentication. | | File location | Enter the absolute path pointing to the HDFS location from which
data is read. | | Die on error | This check box is cleared by default, meaning to skip the row on
error and to complete the process for error-free rows. | ## Advanced settings | Properties | Description | | --- | --- | | Retrieve the HCatalog logs | Select this check box to retrieve log files generated
during HCatalog operations. | | Standard Output Folder | Fill this field with the path to which log files are
stored.

Information noteNote:

This field is enabled only when you selected Retrieve the HCatalog logs check
box. | | Error Output Folder | Fill this field with the path to which error log files are stored.

Information noteNote:

This field is enabled only when you selected Retrieve the HCatalog logs check
box. | | tStatCatcher Statistics | Select this check box to gather the Job processing metadata at the
Job level as well as at each component level. | ## Global Variables | Variables | Description | | --- | --- | | 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 checkbox is
cleared, if the component has this checkbox.

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 more information about variables, see [Using contexts and variables](https://help.qlik.com/talend/r/en-US/8.0/studio-user-guide/contexts-and-variables). | ## Usage | Usage guidance | Description | | --- | --- | | **Usage rule** | This component can be used in a single-component subJob.

HCatalog is built on top of the Hive metastore to provide read and write interface for Pig
and MapReduce, so that the latter systems can use the metadata of Hive to easily read and
write data in HDFS.

For further information, see Apache documentation about HCatalog: https://cwiki.apache.org/confluence/display/Hive/HCatalog. | | Prerequisites | The Hadoop distribution must be properly installed, so as to guarantee the interaction
with *Talend Studio*. The following list presents MapR related information for
example.

Ensure that you have installed the MapR client in the machine where Talend Studio is, and added the MapR client library to the PATH variable of that machine. According to MapR's documentation, the library or libraries of a MapR client corresponding to each OS version can be found under MAPR_INSTALL\ hadoop\hadoop-VERSION\lib\native. For example, the library for Windows is \lib\native\MapRClient.dll in the MapR client jar file.

Without adding the specified library or libraries, you may encounter the following error: no MapRClient in java.library.path.
Set the -Djava.library.path argument, for example, in the Job Run VM arguments area of the Run/Debug view in the Preferences dialog box in the Window menu. This argument provides to Talend Studio the path to the native library of that MapR client. This allows the subscription-based users to make full use of the Data viewer to view locally in Talend Studio the data stored in MapR.

For further information about how to install a Hadoop distribution, see the manuals
corresponding to the Hadoop distribution you are using. | | Limitation | When Use kerberos authentication
is selected, the component cannot work with IBM JVM. | **Related concepts** * [Managing HCatalog tables on Hortonworks Data Platform (deprecated)](https://help.qlik.com/talend/en-US/components/8.0/hcatalog/thcatalogoperation-thcatalogload-tlogrow-managing-hcatalog-tables-on-hortonworks-data-platform-standard-component-bigdata-this)