Zoomdata Version 4.6

The following enhancements and updates were made to Zoomdata in version 4.6. See the following topics:

• Connector Changes
• Query Engine Updates
• Chart Updates
• UI Changes
• API Changes
• What's Fixed?

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Connector Changes

• Zoomdata now supports Elasticsearch version 7.0 - 7.1. See Managing the Elasticsearch Connector.

• The maximum version of Cloudera Impala supported by Zoomdata is now 3.2 because this release of Zoomdata now supports Cloudera CDH 6.2. See Managing the Impala Connector.

Query Engine Updates

With this release, all Zoomdata queries are processed using the enhanced query engine called zEngine that we have supported for fused data queries since Zoomdata 3.6. Note the following considerations when using zEngine:

1. Data Sharpening is not currently supported with zEngine. If your organization requires Data Sharpening in your data analytics use cases, you will need to reenable the legacy query engine. See Reenabling the Legacy Query Engine.

   When you reenable the legacy query engine, data fusion will no longer function because it requires zEngine.

2. Several major changes in calculating the previous period (using the PreviousPeriod function) take effect when using zEngine:

   • Specifying PreviousPeriod() is no longer allowed. Parameters are now required.

   • If the data is grouped by the same field for which a PreviousPeriod transformation is performed and it is grouped by days but transformed by units of months, quarters, or years, zEngine returns null values when the previous period does not have matching days for the current period.

     For example, if the current period is the month of March 2015 and PreviousPeriod('months',1) is used for the transformation, zEngine produces null values for February 29-31, 2015, because those days are not valid days (although they are valid days for March 2015).

     The zEngine attempts to preserve the day-of-month correspondence between the two periods (the previous query engine did not consistently do this).

     See PreviousPeriod Function.

For complete information about the query engine, see Query Engine Microservice.

Chart Updates

The following chart updates were made in this release:

• The scatter plot chart type was updated in this release and now renders using the latest version of the ECharts library. For more information about scatter plots, see Scatter Plot Charts.

• The tree map chart type was updated in this release and now renders using the latest version of the ECharts library. For more information about tree maps, see Tree Maps.

• The floating bubble chart type was updated in this release and now renders using the latest version of the ECharts library. For more information about floating bubble charts, see Floating Bubble Charts.

UI Changes

For consistency and an improved look and feel, the styling of the following UI screens changed in this release:

• The data source configuration wizard. See Defining a Data Source Configuration and Creating a Fusion Data Source.

• The connection management screens. See Managing Data Store Connections.

• The administrator user and group maintenance screens. See Managing Group Definitions and Managing User Definitions. (Note that the supervisor user and account maintenance panels were not changed.)

API Changes

The api/sources/key endpoint that was removed in version 4.4 has been restored in this release.

What's Fixed?

The following problems have been fixed in this release.

• The color displayed for zero values in a heat map is now based on the color legend settings (null values continue to be displayed in gray).

• The new query engine now allows you to leverage Include Blanks in your live data sources.

• Reenabled LDAP users are now automatically reenabled in Zoomdata. With this release, LDAP user enablement and disablement is automatically reflected in Zoomdata.

• Zoomdata back-end dependencies and libraries have been upgraded.

• Corrected a problem in which SAML and LDAP groups that were automatically created in Zoomdata had access to all data source configurations by default, and that access was not reflected in the Zoomdata UI. With this release, new SAML and LDAP groups must be manually assigned data source access and privileges.

• New SAML and LDAP groups now must be manually assigned data source access and privileges. SAML and LDAP groups that are automatically created in Zoomdata no longer have access to all data source configurations by default.