Known issues and limitations in Cloudera Data Visualization 8.0.6

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 - 8.0.6

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 - 8.0.6

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 - 8.0.6

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 - 8.0.6

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

AI visual may fail with connection already closed after long uptime

In long-running Cloudera Data Visualization instances, the AI visual can sometimes fail with a connection already closed error due to stale database connections in background threads. This requires a service restart to recover and interrupts long-running AI visual usage.

Workaround:

Restart the Cloudera Data Visualization service if the error occurs.

Versions affected:

Cloudera Data Visualization 7.2.7 - 8.0.6

Fixed in version:

Cloudera Data Visualization 8.0.7

Cloudera issue:

VIZ-3088

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 and higher

Fixed in version:

N/A

Cloudera issue:

VIZ-3481

Bulk-update refactor may cause performance degradation in Cloudera AI

In Cloudera AI environments, the bulk-update refactor for eventstracker may degrade performance.

Workaround:

Disable the feature flag enable_cml_usage_events.

Versions affected:

Cloudera Data Visualization 7.1.7 and higher

Fixed in version:

N/A

Cloudera issue:

VIZ-3505

Visual and dashboard downloads fail with special characters in titles

Downloading visuals or dashboards with titles containing special characters, spaces, or non-Latin scripts can produce files (PNG, PDF, CSV, Excel) with missing or invalid extensions. This can prevent files from opening in other applications.

Workaround:

Rename the visual or dashboard to remove special characters before downloading.

Versions affected:

Cloudera Data Visualization 8.0.6 and lower

Fixed in version:

Cloudera Data Visualization 8.0.7

Cloudera issue:

VIZ-3509

Dashboard filters cannot be moved to the grid area

Dashboard-level filters cannot be moved to the grid area. Attempting to reposition filters fails, and selections can be lost, limiting dashboard interactivity and flexibility in filter management.

Workaround:

None

Versions affected:

Cloudera Data Visualization 8.0.0 - 8.0.6

Fixed in version:

Cloudera Data Visualization 8.0.7

Cloudera issue:

VIZ-3533

Cloudera AI login fails if required user groups are missing

You can encounter server errors (HTTP 500) and be unable to log in to Cloudera Data Visualization if required Cloudera AI user groups are not automatically created. This issue can prevent access until groups are manually created.

Workaround:

Manually create the required Cloudera AIuser groups with the name “vizcml-rw” and “vizcml-ro” as the vizapps_admin user before logging in using SSO.

Versions affected:

Cloudera Data Visualization 8.0.6 and lower

Fixed in version:

Cloudera Data Visualization 8.0.7

Cloudera issue:

VIZ-3546

Upgrade failures when migrating from 7.2.6 to 7.2.9 and higher

Upgrading Cloudera Data Visualization directly from version 7.2.6 to 7.2.9 or higher can result in a broken database due to a migration issue in the datasets application. This affects both standalone and embedded Data tab deployments, potentially causing upgrade failures or application errors.

Workaround:

Perform a multi-step upgrade through an intermediate version lower than 7.2.9 to avoid the migration issue. On the Data tab, pin the versions using the EMBEDDED_CDV_IMAGE environment variable to pin the application to a specific runtime Docker image. For applications already impacted, run the following script: https://github.com/cloudera/Cloudera-TSB/tree/main/TSB-907

Versions affected:

Cloudera Data Visualization 8.0.6 and lower

Fixed in version:

Cloudera Data Visualization 8.0.7

Cloudera issue:

VIZ-3548

Misapplied selections in dropdown filters with duplicate values

When the same value appears in multiple dropdown filters on a dashboard, selecting a value by clicking on the label in one filter may incorrectly apply the selection to a different filter. This behavior can lead to confusion and inaccurate filter configurations.

Workaround:

Select values using the checkbox instead of clicking the label when multiple dropdown filters contain the same value.

Versions affected:

Cloudera Data Visualization 8.0.6 and lower

Fixed in version:

Cloudera Data Visualization 8.0.7

Cloudera issue:

VIZ-3550

Data extract cannot be created if emailing is not enabled

The CREATE DATA EXTRACT button is disabled if emailing is not enabled in Site Settings. As a result, you cannot create data extracts unless emailing is configured.

Workaround:

Enable emailing in Site Settings before creating a data extract.

Versions affected:

Cloudera Data Visualization 8.0.4 - 8.0.6

Fixed in version:

Cloudera Data Visualization 8.0.7

Cloudera issue:

VIZ-3562