Databricks Account (Source: ADLS Blob Storage)

In this article

Overview

You can use this account type to connect Databricks Snaps with data sources that use the Databricks account with Azure Data Lake Storage (ADLS) Blob Storage as a source.

Prerequisites

  • A valid Databricks account.

  • Certified JDBC JAR File: databricks-jdbc-2.6.25-1.jar

Limitations and Known Issues

None.

Account Settings

  • Asterisk ( * ): Indicates a mandatory field.

  • Suggestion icon ( ): Indicates a list that is dynamically populated based on the configuration.

  • Expression icon ( ): Indicates whether the value is an expression (if enabled) or a static value (if disabled). Learn more about Using Expressions in SnapLogic.

  • Add icon ( ): Indicates that you can add fields in the field set.

  • Remove icon ( ): Indicates that you can remove fields from the field set.

Field Name

Field Type

Field Dependency

Description

Field Name

Field Type

Field Dependency

Description

Label*

 

Default Value: N/A
Example: STD DB Acc DeltaLake AWS ALD

String

None.

Specify a unique label for the account.

 

Download JDBC Driver Automatically

 

 

 

 

 

 

 

 

 

 

 

Default Value: Not Selected
Example: Selected

Checkbox

None

Select this checkbox to allow the Snap account to download the certified JDBC Driver for DLP. The following fields are disabled when this checkbox is selected:

  • JDBC JAR(s) and/or ZIP(s) : JDBC Driver

  • JDBC driver class

To use a JDBC Driver that you choose, clear this checkbox, upload (to SLDB), and choose the required JAR files in the JDBC JAR(s) and/or ZIP(s): JDBC Driver field. 

Use of Custom JDBC JAR version

You can use a different JAR file version other than the recommended list of JAR file versions.

Spark JDBC and Databricks JDBC

If you do not select this checkbox and use an older JDBC JAR file (older than version 2.6.25), ensure that you use: 

  • The old format JDBC URL ( jdbc:spark:// ) instead of the new one ( jdbc:databricks:// )

    • For JDBC driver prior to version 2.6.25, the JDBC URL starts with jdbc:spark://

    • For JDBC driver version 2.6.25 or later, the JDBC URL starts with jdbc:databricks://

  • The older JDBC Driver Class com.simba.spark.jdbc.Driver instead of the new com.databricks.client.jdbc.Driver.

 

JDBC URL*

 

 

 

 

Default Value: N/A

Example: jdbc:spark://adb-2409532680880038.18.azuredatabricks.net:443/default;transportMode=http;ssl=1;httpPath=sql/protocolv1/o/2409532680880038/0326-212833-drier754;AuthMech=3;

String

None

Enter the JDBC driver connection string that you want to use in the syntax provided below, for connecting to your DLP instance. Learn more in Microsoft's JDBC and ODBC drivers and configuration parameters.

jdbc:spark://dbc-ede87531-a2ce.cloud.databricks.com:443/default;transportMode=http;ssl=1;httpPath=
sql/protocolv1/o/6968995337014351/0521-394181-guess934;AuthMech=3;UID=token;PWD=<personal-access-token> 

 

Use Token Based Authentication

Default Value: Selected
Example: Deselected

Checkbox

None

Select this checkbox to use token-based authentication for connecting to the target database (DLP) instance. Activates the Token field.

 

Token*

Default Value: N/A
Example: <Encrypted>

String

When the Use Token Based Authentication checkbox is selected.

Enter the token value for accessing the target database/folder path.

 

Database name*

Default Value: N/A
Example: Default

String

None

Enter the name of the database to use by default. This database is used if you do not specify one in the Databricks Select or Databricks Insert Snaps.

 

Source/Target Location*

Dropdown

None

Select the source or target data warehouse into which the queries must be loaded, that is Azure Blob Storage. This activates the following fields:

  • Azure storage account name

  • Azure Container

  • Azure Folder

  • Azure Auth Type

  • SAS Token

  • Azure Storage Account Key

Azure storage account name*

Default value: N/A

Example: testblob

String

When ADLS Blob Storage is selected as the source.

Enter the name with which Azure Storage was created. The Bulk Load Snap automatically appends the '.blob.core.windows.net' domain to the value of this property.

 

Azure Container*

Default Value: N/A
Example: sl-bigdata-qa

String

When ADLS Blob Storage is selected as the source.

Enter the name of an existing Azure container.

 

Azure folder*

Default Value: N/A
Example: test-data

String

When ADLS Blob Storage is selected as the source.

Enter the name of an existing Azure folder in the container to be used for hosting files.

 

Azure Auth Type

 

 

Default Value: Shared Access Signature
Example: Shared Access Signature

Dropdown

When ADLS Blob Storage is selected as the source.

Select the authorization type that you want to consider when setting up the account. Options available are:

  • Storage Account Key

  • Shared Access Signature: Select when you want to enter the SAS Token associated with the Azure storage account.

 

SAS Token*

Default Value: N/A

Example: ?sv=2020-08-05&st=2020-08-29T22%3A18%3A26Z&se=2020-08-30T02%3A23%3A26Z&sr=b&sp=rw&sip=198.1.2.60-198.1.2.70&spr=https&sig=A%1DEFGH1Ijk2Lm3noI3OlWTjEg2tYkboXr1P9ZUXDtkk%3D

String

When you select Shared Access Signature in the Azure Auth Type.

Enter the SAS token which is the part of the SAS URI associated with your Azure storage account. Learn more in Getting Started with SAS.

 

Azure storage account key*

Default Value: N/A
Example: ABCDEFGHIJKL1MNOPQRS

String

Appears when you select Storage account key in the Azure Auth Type.

Enter the access key ID associated with your Azure storage account.

 

Advanced Properties

Other parameters that you want to specify to configure the account. This fieldset consists of the following fields:

  • URL Properties

  • Batch Size

  • Fetch Size

  • Min Pool Size

  • Max Pool Size

  • Max Life Time

URL properties

Use this fieldset to define the account parameter's name and its corresponding value. Click + to add the parameters and the corresponding values. Add each URL property-value pair in a separate row. 

URL property name

Default Value: N/A
Example: queryTimeout

N/A

None

Specify the name of the parameter for the URL property.

 

URL property value

Default Value: N/A
Example: 0

N/A

None

Specify the value for the URL property parameter.

 

Batch size*

Default Value: N/A
Example: 3

Integer

None

Specify the number of queries that you want to execute at a time.

  • If the Batch Size is one, the query is executed as-is, that is the Snap skips the batch (non-batch execution).

  • If the Batch Size is greater than one, the Snap performs the regular batch execution.

 

Fetch size*

Default Value: 100
Example: 12

Integer

None

Specify the number of rows a query must fetch for each execution.

Large values could cause the server to run out of memory.

Min pool size*

Default Value: 3
Example: 0

Integer

None

Specify the minimum number of idle connections that you want the pool to maintain at a time. 

 

Max pool size*

Default Value: 15
Example: 0

Integer

None

Specify the maximum number of connections that you want the pool to maintain at a time.

 

Max life time*

Default Value: 60
Example: 50

Integer

None

Specify the maximum lifetime of a connection in the pool, in seconds.

  • Ensure that the value you enter is a few seconds shorter than any database or infrastructure-imposed connection time limit.

  • 0 (zero) indicates an infinite lifetime, subject to the Idle Timeout value.

  • An in-use connection is never retired. Connections are removed only after they are closed.

Minimum value: 0
Maximum value: No limit

Idle Timeout*

 

Default Value: 5
Example: 4

Integer

None

Specify the maximum amount of time in seconds that a connection is allowed to sit idle in the pool. 

0 (zero) indicates that idle connections are never removed from the pool.

Minimum value: 0
Maximum value: No limit

Checkout timeout*

 

Default Value: 10000
Example: 9000

Integer

None

Specify the maximum time in milliseconds you want the system to wait for a connection to become available when the pool is exhausted.

Minimum value: 0
Maximum value: No limit

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