In the March 2020 release of Prep, explore faster cleaning operations for date fields, support for the Cloudera Impala connector, and persistent server login so you don't have to sign in every time you open Prep Builder.
Now, when you sign into Server or Online, Prep Builder remembers your login. Converting date values is now a one-step operation with new quick cleaning operations, and we've added support for the Cloudera Impala connector.
As always, we would love to hear more feedback on Prep to make it even better! Read on to learn more about this release.
In this release, log in to Prep Builder with ease. Now, every time you open Prep Builder, it will remember login information between app sessions. No more signing in for every session. Connecting to published data sources or inserting saved flows becomes a seamless experience. When it comes time to publish your flow to your server, server information automatically populates for you—no need to sign in unless you want to work with a different server.
We introduced version compatibility warnings in January, but you needed to be signed into your server to see them. With this new feature, you're instantly notified if the feature isn't compatible, saving you time and frustration.
To see this feature in action, sign into your server, close Prep Builder, then reopen it to see that you're automatically signed in!
The quick cleaning operations in the ‘More options’ menu make calculations more accessible. Today, you can leverage these one-click operations to clean string values like removing spaces, splitting substrings, converting to lower case or upper case, and more. We know that many customers want additional flexibility to easily clean date values. For example, to find your weekly sales, having a week number in your data set would be really helpful. You could use a calculated field to create this data or you could use the new Convert Dates option and let do the conversion for you!
Let’s look at an example. Find a date field in your data set and navigate to the More options menu on the Profile card where you’ll see the new option ‘Convert Dates’. In the submenu, select how you want Prep to convert your date. For example, convert “date” to “date and time”, or “date” to “year”, and so on.
Learn how you can get started with the Embedding Playground—an interactive learning environment where you can rapidly develop code for embedded analytics.This topic describes the options for setting the process configuration. To configure Tableau Server processes, you need to specify which processes and how many instances should run on each node. You do this using the tsm topology set-process command. For more information, see Changing the number of processes on a node.
Except where explicitly noted in the table below, applying changes in processes will stop Tableau Server if it is running when you apply those changes. After changes are applied, Tableau Server is returned to the state it was in before process configuration, so if the server was running, it will be restarted.
Some of the processes that are installed as a part of Tableau Server are "licensed" processes. Licensed processes need a valid Tableau Server license in order to run. Other processes that are installed as a part of Tableau Server are not tied to a valid license. This has the following impact:
The "Licensed" column in the table below identifies those processes that require a valid license, and which impact the count of cores in core-based licenses.
The Analytics Extensions Microservice supports a set of functions to pass expressions to analytics extensions for integration with R, Python, and Einstein Discovery.
After the identity migration process is complete and as part of identity pools management, the Authentication service is responsible for the following:
Identity migration must be complete and the Identity Service turned on to set up and user identity pools. For more information, see About the Identity Migration and Provision and Authenticate Users Using Identity Pools.
Backgrounder is a single-threaded process. You can add more instances of backgrounder to a node to expand the capacity of the node to run jobs in parallel.
In most situations you can increase or decrease the number of backgrounder instances on an existing node of a running server without causing a stop and restart the server. The exception is when you have Data Management licensed and you add the first instance of backgrounder to a node or remove the last instance of backgrounder from the node. For more information, see Tableau Server Dynamic Topology Changes.
The Cache Server is a query cache distributed and shared across the server cluster. This in-memory cache speeds user experience across many scenarios. VizQL server, backgrounder, and data server (and application server to a lesser extent) make cache requests to the cache server on behalf of users or jobs.
We recommend you install no more than a maximum of six cache server instances, limiting each node to no more than two. Our testing indicates that installing more than a total of six cache server instances in a Tableau Server installation provides no improvement, and could have a negative impact on performance.
For high availability, we recommend you install an instance of the Collections service on every node that has an instance of the Application Server installed. For more information, see Tableau Server Collections Service.
The Content Exploration service extends search and browse capabilities for Tableau Server. It also depends on Index and Search Server to do its operations.
For high availability, we recommend you install an instance of the Content Exploration service on every node that has Application Server installed. For more information, see Tableau Server Content Exploration Service.
Note: When File Store is configured externally, Data Engine is no longer installed with File Store. For more information see Tableau Server External File Store.
Data Source Properties is added by default on the initial node. A Tableau Server installation must include at least one instance. For performance reasons, we recommend installing the Data Source Properties service on any node that has Application Server (VizPortal) installed.
Elastic Server processes can be running on more than one node in a cluster. Optionally, they can be moved to any node. It is recommended to have an odd number of Elastic Server processes running.
When File Store is installed, Data Engine is also installed, unless the node already has an instance of Data Engine or if File Store is configured externally.
Index and Search Server is based on AWS OpenSearch. Tableau uses the search capability of Open Search to index data for Ask Data and the Content Exploration service.
We recommended an odd number of Index and Search Server processes running in total. On Tableau Server Clusters that have 3 or more nodes, we recommend that you configure Index and Search Server on at least three different nodes.
One instance of Internal Data Source Properties is automatically configured on each node that has an instance of Data Source Properties on it.
On multi-node installations of Tableau Server, you can move the Messaging Service to a different node. In version 2020.1 you can add a second instance of the Messaging Service on an additional node to provide some redundancy (in 2019.4 you cannot configure more than one instance in a cluster). For more information, see Tableau Server Messaging Service.
We recommend at least one instance of the Metrics service on each node in a multi-node installation of Tableau Server. For more information, see Tableau Server Metrics Service.
The PostgreSQL repository is the main database for Tableau Server. It stores workbook and user metadata. When Tableau Catalog (or Tableau Metadata API) is enabled, the repository stores Tableau content and external assets metadata.
You are limited to a maximum of two instances of the repository in a cluster, and must have at least three nodes in the cluster to add a second repository instance.
The Tableau Server Resource Limits Manager tracks backgrounder resource usage in relation to the set resource limits to make sure the resource limits are applied correctly.
The Resource Limits Manager is automatically and by default installed on the Initial node of Tableau Server. We do not recommend adding more processes or configuring this on additional nodes of the Tableau Server.
The Tableau Prep Conductor runs flows and processes flows for ingestion by Data Catalog. It leverages the scheduling and tracking functionality of Tableau Server so you can automate running flows to update the flow output.
By default, it is automatically enabled on a node where backgrounder is enabled. If the node role is set to exclude flows, then Tableau Prep Conductor is not installed on that node. For more information, see Workload Management through Node Roles. Starting in 2020.4 Data Management is not needed to enable this process on Tableau Server.
When VizQL Server is installed, Gateway and Data Engine are also installed, unless the node already has an instance of Gateway and Data Engine.
In most situations you can change the number of VizQL instances on an existing node of a running server without causing a stop and restart the server. An exception is if you are adding VizQL to an existing
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