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MDM: known issues and known limitations

Studio

Limitation

Description

Available in
MDM SQL query language The order by clause with the count function does not work if you are using the DB2 or MS SQL Server database, because they don't support it.

Talend MDM Platform and Talend Data Fabric
If you want to use Talend Data Stewardship to handle the merging tasks generated during the integrated matching process, pay attention to the following.
  • The integrated matching feature supports only primary keys of the type string.
  • The integrated matching feature does not support matching on entities with composite primary keys.
  • The mapping between MDM and Talend Data Stewardship only applies to simple type elements at the root level in an MDM entity, and will ignore complex type elements or repeatable elements.

Talend MDM Platform and Talend Data Fabric
A foreign key element will be shown in the custom layout only if it has been rendered in the main tab To display a foreign key element in the custom layout, you need to render it in the main tab.

Talend MDM Platform and Talend Data Fabric
The match simulation operations will not take into account the built-in blocking key You may use the built-in blocking key when defining a match rule. However, the match simulation operations will not take into account the built-in blocking key.

Talend MDM Platform and Talend Data Fabric
You need to restart Talend Studio after installing required third-party libraries After you install any required third-party libraries, you need to restart Talend Studio for your updates to be taken into account.

Talend MDM Platform and Talend Data Fabric
Repeating elements specified in the Viewable section of a View do not work on versions of Oracle 11g prior to 11.2 If you specify a repeating element (maxOccurs > 1) in the Viewable section of a View, it does not work on versions of Oracle 11g prior to 11.2.

Talend MDM Platform and Talend Data Fabric
tMDMDelete may take a long time to run a delete query with an Oracle database If tMDMDelete encounters issues with a timeout when trying to run a delete query because the database takes a long time to perform this action, consult the article about how to get rid of transactions timeout for long running operations.

Talend MDM Platform and Talend Data Fabric
tMDMConnection parameter "Use client side transaction id" is not production ready The tMDMConnection component has a new parameter called "Use client side transaction Id". This option is experimental and is subject to change in the future, so should not be used in a production environment.

Talend MDM Platform and Talend Data Fabric
tMDMInput operator "Joins With" is reserved for future use In the component tMDMInput, after the Use multiple conditions check box is selected, the Joins With operator listed in the Function column is reserved for future use.

Talend MDM Platform and Talend Data Fabric

Installer

Issue

Workaround

Available in
By default, macOS Sierra sets all downloaded files to "quarantine". This prevents you running Talend Studio.
  1. Unzip Talend Studio as usual.
  2. Open a Terminal window on the folder where you unzipped Talend Studio.
  3. Execute either of the following commands.
    xattr -d com.apple.quarantine *

    Or

    xattr -c *

Talend MDM Platform and Talend Data Fabric
Users with a recent version of Mac OS X may need to update their Gatekeeper settings to install Talend products. Gatekeeper is available from OS X 10.7.5.
  1. Click the Apple icon, and then click System Preferences.
  2. Under System Preferences, click Security & Privacy.
  3. Under Security & Privacy, click General tab.

  4. Click the lock icon next to Click the lock to make changes, and then identify yourself using the user name and password for an account with administrator rights. Only administrators can change the security settings.

  5. Under Allow apps download from, select the Anywhere radio button then confirm your choice in the dialog box that opens.
  6. Close all windows, so that your Mac automatically locks the Security & Privacy settings for you again.
  7. Install Talend Studio (or whatever other executable you want to install) by following the usual installation procedure. Note that, when you double-click the Talend-Studio-macosx-cocoa.app file, you will see a warning saying that it is an application downloaded from the Internet, but if you click Open, your Mac should let you install it without further issues.
  8. Once you have completed the installation process, you can repeat the above steps to return your Security & Privacy settings to their previous value if you want.

Talend MDM Platform and Talend Data Fabric

Talend MDM Server

Issue

Workaround

Available in
Database migration may be required if your Data Model uses a reusable type more than once. If your Data Model makes use of a reusable type more than once within one or more entities and this causes you to encounter issues, you may need to migrate your database when upgrading to this version.

Talend MDM Platform and Talend Data Fabric
When using Talend-LogServer, by default, event logs are stored without specific security protection and as such all logs are visible to anyone with access to the server (via an HTTP URL within your network). For information on how to deactivate the Talend Administration Center Logging Screen and Talend LogServer, see the article about How to disable the display of log events on the Logging page of Talend Administration Center.

Talend MDM Platform and Talend Data Fabric

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