Known issues and limitations in Cloudera Data Visualization 8.0.8

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 - 8.1.0

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 - 8.1.0

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 - 8.1.0

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 - 8.1.0

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

Profile Data modal does not open across pages when site setting is enabled

The Show Usage Info setting and the Ctrl+Shift+G shortcut, intended to open the Profile Data modal across all pages, are currently not working. Even when the Enable the "Show Usage Info" and Ctrl-Shift-G shortcut to view page profiles within all pages site setting is enabled, the modal does not appear.

Workaround:

None

Versions affected:

Cloudera Data Visualization 7.0.4 and higher

Fixed in version:

N/A

Cloudera issue:

VIZ-3341

Queries on databases with numeric names fail in Trino

When querying databases in Trino whose names begin with numbers, queries fail with a syntax error.

Workaround:

Escape the database name in the query.

For example: SHOW TABLES FROM "impala"."999_test_cdv"; instead of SHOW TABLES FROM impala.999_test_cdv;

Versions affected:

Cloudera Data Visualization 8.0.0 - 8.0.9

Fixed in version:

Cloudera Data Visualization 8.1.0

Cloudera issue:

VIZ-3481

Editing a user group may remove users not loaded in the editor

When you edit a group on the Manage Users and Groups page, only the first 10 users are loaded due to pagination. If you save the group without making changes, the system updates the group membership to include only those loaded users, removing any additional members that were not visible in the editor.

Workaround:

None

Versions affected:

Cloudera Data Visualization 7.2.2 - 8.0.8

Fixed in version:

Cloudera Data Visualization 8.0.9

Cloudera issue:

VIZ-3610

CSV and Excel downloads are missing file extensions

Backend-generated CSV and Excel files downloaded from Cloudera Data Visualization are saved without file extensions. As a result, some systems may not recognize the file type automatically or may not open the files correctly.

Workaround:

Manually add the appropriate file extension to the downloaded file name before opening it.

Versions affected:

Cloudera Data Visualization 8.0.7 - 8.0.8

Fixed in version:

Cloudera Data Visualization 8.0.9

Cloudera issue:

VIZ-3646

Impala connection discovery may select an incorrect endpoint

On Cloudera Base on premises clusters with multiple Impala services or dedicated coordinators, Cloudera Data Visualization may connect to an incorrect Impala endpoint during connection discovery. This can result in connection failures, such as TSocket read 0 bytes errors.

Workaround:

None

Versions affected:

Cloudera Data Visualization 8.0.8

Fixed in version:

Cloudera Data Visualization 8.0.9

Cloudera issue:

VIZ-3651

Modifying the Result Cache of a data connection through the UI causes associated queries to fail

When the Result Cache is enabled on a data connection with a Cache Retention Timeout value, the following error occurs when a visual is loaded for the second time:

- error: '\u003C' not supported between instances of 'float' and 'str'

Workaround:

Configure the Result Cache setting at the dataset level instead of the data connection level.

Alternatively, use the AdminAPI to programmatically update the data connection’s cache properties. For more information, see Admin API Demo.

Versions affected:

Cloudera Data Visualization 8.0.2 - 8.0.8

Fixed in version:

Cloudera Data Visualization 8.0.9

Cloudera issue:

VIZ-3656

HTML links in table visuals do not render as clickable links

In table visuals, custom expressions that generate HTML anchor tags (for example, <a href="https://…">ID</a>) are displayed as raw HTML instead of clickable links. This occurs even when the Show values starting with http(s):// as links option is enabled.

Workaround:

None

Versions affected:

Cloudera Data Visualization 7.2.5 - 8.0.9

Fixed in version:

Cloudera Data Visualization 8.1.0

Cloudera issue:

VIZ-3688

AI-generated streaming responses may be incomplete

In Cloudera Data Visualization, AI-generated responses in visuals may be truncated or incomplete when streaming over slow or high-latency network connections. This occurs because the streaming parser may not process all incoming data correctly.

Workaround:

None

Versions affected:

Cloudera Data Visualization 8.0.0 - 8.0.9

Fixed in version:

Cloudera Data Visualization 8.1.0

Cloudera issue:

VIZ-3701

Search on the Data tab does not work

Search on the Data page is not functional, so datasets cannot be found using the search field.

Workaround:

Browse datasets manually until the issue is resolved.

Versions affected:

Cloudera Data Visualization 8.0.5 - 8.0.9

Fixed in version:

Cloudera Data Visualization 8.1.0

Cloudera issue:

VIZ-3709