Known issues and limitations in Cloudera Data Visualization 8.1.3

Learn about the known issues and limitations that you might experience while using Cloudera Data Visualization. You can find information about the areas of impact, affected product versions, and possible workarounds.

Picklist in complex data types Show Selected unselects previous selections

Show selected in a filter list selection may not show all selections depending on the data type. A fix is expected in a future release.

Workaround

None

Versions affected

Cloudera Data Visualization 7.0.2 - 8.1.4

Fixed in version

N/A

Cloudera issue

VIZ-456

Inconsistent support for non-roman or character-based alphabets across visual types

Non-romanized or character-based alphabets are not consistently supported across various visual types. If not supported, the affected visual is not properly rendered in PDF/PNG downloads. CSV/Excel downloads and general dashboard viewing is available for all languages.

The following languages are not supported when using a table visual.

In Cloudera AI:	In Cloudera Data Warehouse:
Amharic (Ethiopia) Arabic (multiple countries) Bengali (Bangladesh) Berber (multiple countries) Burmese (Myanmar) Dari Pashto (Afghanistan) Dzongkha (Bhutan) Fijian (Fiji) Georgian Hebrew (Israel) Khmer (Cambodia) Lao Malay (Brunei) Many Indian languages Nepalese (Nepal) Persian (Iran) Tamil (Malaysia, India, Singapore) Thai (Thailand) Urdu (Pakistan)	Amharic (Ethiopia) Bengali (Bangladesh) Burmese (Myanmar) Dzongkha (Bhutan) Fijian (Fiji) Khmer (Cambodia) Many Indian languages Nepalese (Nepal) Tamil (Malaysia, India, Singapore) Thai (Thailand)

Workaround

None

Versions affected

Cloudera Data Visualization 7.0.2 - 8.1.4

Fixed in version

N/A

Cloudera issue

VIZ-984

Saved value does not show properly when arcapi is present

After the fix included for VIZ-1070, a known issue is still present when using arcapi.sendParameters with app-scope filters.

Workaround

None

Versions affected

Cloudera Data Visualization 7.0.2 - 8.1.4

Fixed in version

N/A

Cloudera issue

VIZ-1181

Selecting NULL values can cause ParseException syntax error from Cloudera Data Visualization 7.1.3

After upgrading to Cloudera Data Visualization 7.1.3 or later, selecting "NULL" values in filters may lead to a ParseException syntax error.

Workaround:

To resolve this issue, deselect the “NULL” value in the picklist filter.

Versions affected:

Cloudera Data Visualization 7.1.3 - 8.1.4

Fixed in version:

N/A

Cloudera issue:

VIZ-2224

Long-running queries cannot be canceled for some data connections

For data connections other than Hive or Impala, long-running queries cannot be canceled since they are run synchronously.

Workaround:

Restart the Cloudera Data Visualization application.

Versions affected:

All versions

Fixed in version:

N/A

Cloudera issue:

VIZ-2634

Data compatibility check does not work for SQL-based datasets that join on multiple tables

When importing in visual artifacts that use SQL-based datasets, the “data compatibility” check may fail with an “IndexError: list index out of range” error, if the dataset joins multiple tables.

Workaround:

Disable “Check data table compatibility” when importing in visual assets with complex queries.

Versions affected:

All versions

Fixed in version:

N/A

Cloudera issue:

VIZ-3121

Show Usage Info setting and Ctrl+Shift+G shortcut do not work on all pages

When the Show Usage Info site setting is enabled, the Profile Data modal does not open on certain pages. The Ctrl+Shift+G keyboard shortcut for viewing page profiles also does not work on those pages.

Workaround:

None

Versions affected:

Cloudera Data Visualization 7.0.4 and higher

Fixed in version:

N/A

Cloudera issue:

VIZ-3341

Time modeling does not work

Visuals configured with Time modeling do not animate over time as expected.

Workaround:

None

Versions affected:

Cloudera Data Visualization 8.1.4 and lower

Fixed in version:

N/A

Cloudera issue:

VIZ-3896

Selection brush for time ranges does not work correctly with sub-second timestamp resolution

The zoom and selection brush functionality on line chart visuals does not work as expected when the X-axis uses timestamps with sub-second precision, such as milliseconds or microseconds. The timestamp filter used by the zoom feature truncates timestamp values to whole seconds, preventing accurate selection and zooming of high-resolution time series data.

Workaround:

Truncate timestamps to second-level resolution in the dataset before visualizing the data. Be aware that this workaround may introduce side effects:

Potential side effects of the workaround include:

• Continuous variables may appear smoothed because multiple values within the same second can be aggregated.
• Binary (0/1) variables may produce intermediate values that do not represent actual system behavior.
• Events or alarms with a duration shorter than one second may be lost.

Versions affected:

Cloudera Data Visualization 8.0.7 - 8.1.4

Fixed in version:

N/A

Cloudera issue:

VIZ-4050

App-level filters override dashboard-level filters

When using applications in Cloudera Data Visualization, filters defined at the application level take precedence over filters configured at the dashboard level. This means that dashboard-level filter settings are overridden by the application’s filter configuration, which may lead to unexpected filtering behavior. .

Workaround:

None

Versions affected:

Cloudera Data Visualization 8.0.7 - 8.1.4

Fixed in version:

N/A

Cloudera issue:

VIZ-4052

Issues when navigating between dashboards in applications

Several navigation and usability limitations exist when working with dashboards inside Cloudera Data Visualization applications:

• Open in New Tab not working within apps:

  When using the Navigate to Dashboard action with Open Target Dashboard in New Tab enabled, the target dashboard opens in the same tab instead of a new tab if the dashboard is part of an application.

• No back navigation between dashboards:

  When navigating between dashboards within an application, there is no built-in option to return to the previously viewed dashboard.

• Dashboards cannot be hidden from the app menu:

  Dashboards that are only intended to be accessed through navigation links from other dashboards still appear in the application's top navigation menu.

• Application-level filters cannot be hidden on individual dashboards:

  Filters scoped at the application level are displayed on all dashboards in the application. There is no option to hide these filters on dashboards where they are not relevant.

Workaround:

None

Versions affected:

Cloudera Data Visualization 8.0.7 - 8.1.4

Fixed in version:

N/A

Cloudera issue:

VIZ-4054

Cloudera Data Visualization is inaccessible when KnoxSSO authentication is configured

When KnoxSSO authentication is enabled, Cloudera Data Visualization returns HTTP 500 errors on every request and the UI is inaccessible. This issue is caused by a compatibility problem introduced with the Django 5.2 upgrade, where the SpnegoMiddleware fails to initialize correctly and triggers an AttributeError for every request. The error page itself also fails to render, producing an empty HTTP response.

Workaround:

1. Add the following configuration to the dataviz-site.xml_service_safety_valve in Cloudera Manager.

   <property>
     <name>DATAVIZ_ADVANCED_SETTINGS</name>
     <value>
   from django.apps import AppConfig
   class StartUp(AppConfig):
     name = 'settings_local'
     def ready(self):
       _patch()
   def _patch():
     from arcwebbase.middleware import SpnegoMiddleware
     SpnegoMiddleware.async_mode = False
   INSTALLED_APPS += ('settings_local.StartUp',)
     </value>
   </property>
   

2. After applying the configuration, restart the Cloudera Data Visualization service.

Versions affected:

Cloudera Data Visualization 8.1.3

Fixed in version:

Cloudera Data Visualization 8.1.4

Cloudera issue:

VIZ-4145