We dump our logs in S3 currently. Can you give us best practices to make these logs easier to query?
And if it is generic logs which gets landed on S3 , it'd be worth taking a look at Autoloader. Here is a blog post on processing crowdstrike logs in a similar way
What is the recommended way to backfill a delta table using a series of smaller date partitioned jobs?
Another approach you might consider is creating a template notebook to query a known date range with widgets. For example, two date widgets, start time and end time. Then from there you could use Databricks Jobs to update these parameters for each ru...
After I enable one of my Delta tables to use Change Data Feed, does it record all previous changes to my table?
Some Tips & Tricks for Optimizing costs and performance (Clusters and Ganglia):[Note: This list is not exhaustive]Leverage the DataFrame or SparkSQL API’s first. They use the same execution process resulting in parity in performance but they also com...
When does it make sense to use Delta over parquet? Are there any instances when you would rather use parquet?
Users should almost always choose Delta over parquet. Keep in mind that delta is a storage format that sits on top of parquet so the performance of writing to both formats is similar. However, reading data and transforming data with delta is almost a...
An Action in Spark is any operation that does not return an RDD. Evaluation is executed when an action is taken. Actions trigger the scheduler, which build a directed acyclic graph (DAG) as a plan of execution. The plan of execution is created by wor...
When and why should I convert b/w a Pandas to Koalas dataframe? What are the implications?
Koalas is distributed on a Databricks cluster similar to how Spark dataframes are also distributed. Pandas dataframes only live on the spark driver in memory. If you are a pandas user and are using a multi-node cluster then you should use koalas to p...
I’m using the databricks-snowflake connector to load data into a Snowflake table. Can someone point me to any example of how we can append only a subset of columns to a target Snowflake table (for example some columns in the target snowflake table ar...
We have a user notebook in R that reliably crashes the driver. Are detailed logs from the R process stored somewhere on drivers/workers?
How are index columns handled in Koalas? What about multi-level indices?
I know that I can do a DESCRIBE DETAIL on a table to get current delta table version details. If I want to get these same details on a previous version, how can I do that?
I have a function within a module in my git-repo. I want to import that to my DB notebook - how can I do that?
Databricks Repos allows you to sync your work in Databricks with a remote Git repository. This makes it easier to implement development best practices. Databricks supports integrations with GitHub, Bitbucket, and GitLab. Using Repos you can bring you...
I know I can disable Databricks PAT tokens from being used, but what about AAD tokens?
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