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Delta Live Table supports the data quality checks via expectations. On encountering invalid records you can choose to either retain them, drop them or fail/stop the pipeline. See the link below for additional detailshttps://docs.databricks.com/data-e...
Here's the difference a View and Table in the context of a Delta Live Table PIpelineViews are similar to a temporary view in SQL and are an alias for some computation. A view allows you to break a complicated query into smaller or easier-to-understan...
Yes. You can specify a "target" database as part of your DLT pipeline configuration to publish results to a target database in the metastore. See - https://docs.databricks.com/data-engineering/delta-live-tables/delta-live-tables-quickstart.html#publi...
DLT Pipeline results are published to the "Storage Location" defined as part of configuring the Pipeline. Ex:- https://docs.databricks.com/_images/dlt-create-notebook-pipeline.pngIf an explicit Storage Location is not specified, the pipeline results ...
Notebooks with Delta Live Table/View definition just contain the pipeline definition. In order to execute Delta Live Tables Notebooks you need to define a Pipeline via the Jobs UI. Pipeline carries with it the logic to build the dependency graph betw...
You could have the single node cluster where proxy is installed monitored by one of the tools like cloudwatch, azure monitor, datadog etc and have it configured to send alerts on node failure
IF I installed the root Bucket I see a root bucket is created with workspace, Does this bucket resided in Customer account or Databricks Account. How can I Access the bucket and can i see this bucket directly in s3 or ADLS
Didin't get the reference about installing bucket ? did you mean configured a workspace with root bucket. If so, you'd have probably gathered that root storage for a workspace resides in customer's account
Delta cache accelerates data reads by creating copies of remote files in nodes’ local storage using a fast intermediate data format. The data is cached automatically whenever a file has to be fetched from a remote location. Successive reads of the sa...
Many a times there is a need to convert Delta tables from Delta format to plain parquet format for a number of reasons, what is the best way to do that?
You can easily convert a Delta table back to a Parquet table using the following steps:If you have performed Delta Lake operations that can change the data files (for example, delete or merge, run vacuum with retention of 0 hours to delete all data f...
Trying to configure new external metastore and running into the following exception during cluster initialization - Caused by: MetaException(message:Version information not found in metastore. ) at org.apache.hadoop.hive.metastore.RetryingHMSHandl...
The above exception happens when the hive schema is not available in the metastore instance. Please check in your init scripts to make sure the following flag is enabled to create hive Schema and tables if not already present. datanucleus.autoCreateA...
The below code snippet can be used to get the DBR details on a HC clusterprint("hadoopVersion:" + sc._gateway.jvm.org.apache.hadoop.util.VersionInfo.getVersion()) print("baseVersion:" + sc._gateway.jvm.org.apache.spark.BuildInfo.sparkBranch()) print(...
Databricks notebooks can be exported and stored in S3 or any other object storage. The internal storage of the databricks notebook cannot be changed or configured. The implementation is internal to Databicks control plane and not user configurable.
The below code snippet is useful to get the modification time of files. %scala import scala.util.Try import org.apache.hadoop.conf.Configuration import org.apache.hadoop.fs.{FileSystem, Path} import org.apache.hadoop.io.IOUtils import java.io.IOExcep...
What is the best way to capture the thread dump of the Spark driver process. Also, when should I capture the thread dump?
For Spark driver the process is the same. Choose the driver from the Executor page and view the thread dump. A thread dump is the footprints of the JVM they are very useful in debugging issues where the JVM process is stuck or making extremely slow p...
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