- 2635 Views
- 2 replies
- 0 kudos
Discrepancy in Performance Reading Delta Tables from S3 in PySpark
Hello Databricks Community,I've encountered a puzzling performance difference while reading Delta tables from S3 using PySpark, particularly when applying filters and projections. I'm seeking insights to understand this variation better.I've attempte...
- 2635 Views
- 2 replies
- 0 kudos
- 0 kudos
Use the explain method to analyze the execution plans for both methods and identify any inefficiencies or differences in the plans. You can also review the metrics to understand this further. https://www.databricks.com/discover/pages/optimize-data-wo...
- 0 kudos
- 1978 Views
- 1 replies
- 0 kudos
Error changing connection information of Databricks data source posted on Tableau server
HelloThere is a Databricks data source published on the Tableau server.When I click the 'Edit Data Source' button in the location where the data source is published and go to the Data Source tab, and change the Databricks connection information (HTTP...
- 1978 Views
- 1 replies
- 0 kudos
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1) I am thinking if there are saved auth, which could cause the issue. 2) If possible, try using different authentication methods (e.g., Personal Access Token) to see if the issue persists. This can help identify if the problem is specific to the aut...
- 0 kudos
- 1559 Views
- 2 replies
- 1 kudos
How to download the results in batches
Hello, how are you?I`m trying to download some of my results on databricks and the sheets is around 300mb, unfortunately my google sheets is not open files that has more then 100mb. Is that any chance that i could download the results in batches to ...
- 1559 Views
- 2 replies
- 1 kudos
- 1 kudos
Hey, Thinking of more alternates to repartition: 1- Use the limit and offset options in your SQL queries to export data in manageable chunks. For example, if you have a table with 100,000 rows and you want to export 10,000 rows at a time, you can us...
- 1 kudos
- 2498 Views
- 1 replies
- 0 kudos
React.js and Databricks Apps
Is there documentation and support for React and Databricks apps. Similar to the diagram below:
- 2498 Views
- 1 replies
- 0 kudos
- 0 kudos
Documentation for https://docs.databricks.com/en/dev-tools/databricks-apps/index.html You can use https://react.dev/ documentation to leverage react, and develop your UI.
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- 650 Views
- 1 replies
- 0 kudos
COPY INTO from Volume failure (rabbit hole)
hey guys, I am stuck on a loading task, and I simply can't spot what is wrong. The following query fails: COPY INTO `test`.`test_databricks_tokenb3337f88ee667396b15f4e5b2dd5dbb0`.`pipeline_state`FROM '/Volumes/test/test_databricks_tokenb3337f88ee6673...
- 650 Views
- 1 replies
- 0 kudos
- 0 kudos
I see you are reading just 1 file, ensure that there are no zero-byte files in the directory. Zero-byte files can cause schema inference to fail. Double-check that the directory contains valid Parquet files using parquet tools. Sometimes, even if the...
- 0 kudos
- 662 Views
- 1 replies
- 0 kudos
How to identify the goal of a specific Spark job?
I'm analyzing the performance of a DBR/Spark request. In this case, the cluster is created using a custom image, and then we run a job on it.I've dived into the "Spark UI" part of the DBR interface, and identified 3 jobs that appear to account for an...
- 662 Views
- 1 replies
- 0 kudos
- 0 kudos
The spark jobs are decided based on your spark code. You can look at the spark plan to understand what operations each spark job/stage is executing
- 0 kudos
- 1688 Views
- 3 replies
- 1 kudos
Databricks workspace adjust column width
Hi, is it possible to change the column width in the workspace overview? Currently I have a lot of jobs with a name which is too wide for the standard overview and so it not easy to find certain jobs.
- 1688 Views
- 3 replies
- 1 kudos
- 1509 Views
- 2 replies
- 0 kudos
JDBC Invalid SessionHandle with dbSQL Warehouse
Connecting Pentaho Ctools dashboards to Databricks using JDBC to a serverless dbSQL Warehouse, it works fine on the initial load, but then if we leave it idle for awhile and come back we get this error:[Databricks][JDBCDriver](500593) Communication l...
- 1509 Views
- 2 replies
- 0 kudos
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I should have mentioned that we're using AuthMech=3 and in the JDBC docs (Databricks JDBC Driver Installation and Configuration Guide) I don't see any relevant timeout settings that would apply in that scenario. Am I missing something?
- 0 kudos
- 1482 Views
- 6 replies
- 1 kudos
Unity Catalog for Enterprise level governance
Can we import cataloguing information from other non Databricks workloads into unity catalog? Importing metadata information from Synapse, Redshift, ADF etc. into Unity catalog for end to end lineage and tracking?
- 1482 Views
- 6 replies
- 1 kudos
- 1 kudos
Yes, it is possible, but limited at the moment. This is being implemented and under private preview. There is an API called "Bring-your-own Lineage". You can test it but for that you would need to contact your account team to allow you to use the fea...
- 1 kudos
- 766 Views
- 1 replies
- 0 kudos
Understanding Photon Row Group Skipping
Hey guys!I am using Photon to do a simple point query on a Liquid Clustered table with the purpose of understanding the statistics. I see that a significant number of files have been pruned (`files pruned`: 1104, `files read`:files read).However I am...
- 766 Views
- 1 replies
- 0 kudos
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Hi @tomvogel01 , "row groups skipped via lazy materialization" refers to the process where certain row groups are not physically read into memory during query execution. This is due to the ability of Photon to perform filtering at the row group level...
- 0 kudos
- 11362 Views
- 2 replies
- 1 kudos
how to use R in databricks
Hello everyone.I am a new user of databricks, they implemented it in the company where I work. I am a business analyst and I know something about R, not much either, when I saw that databricks could use R I was very excited because I thought that the...
- 11362 Views
- 2 replies
- 1 kudos
- 1 kudos
There are some existing posts about using R in databricks:https://docs.gcp.databricks.com/en/sparkr/index.htmlhttps://docs.databricks.com/en/dev-tools/databricks-connect/cluster-config.htmlOnce you have the correct cluster started (this post is about...
- 1 kudos
- 8623 Views
- 8 replies
- 1 kudos
log signature and input data for Spark LinearRegression
I am looking for a way to log my `pyspark.ml.regression.LinearRegression` model with input and signature ata. The usual example that I found around are using sklearn and they can simply do # Log the model with signature and input example signature =...
- 8623 Views
- 8 replies
- 1 kudos
- 1 kudos
I accidentally stumbled upon this ticket when researching on a similar issue. Note that starting from MLflow 2.15.0 it supports VectorUDT. https://mlflow.org/releases/2.15.0
- 1 kudos
- 515 Views
- 0 replies
- 0 kudos
Patient Risk Score based on health history: Unable to create data folder for artifacts in S3 bucket
Hi All,we're using the below git project to build PoC on the concept of "Patient-Level Risk Scoring Based on Condition History": https://github.com/databricks-industry-solutions/hls-patient-riskI was able to import the solution into Databricks and ru...
- 515 Views
- 0 replies
- 0 kudos
- 825 Views
- 1 replies
- 0 kudos
Data Bricks x Power BI Report Server
I connected two .pbix files to the local server. In the first, I used Import connectivity, and in the second, Direct Query connectivity. However, I encountered the following problems: Import connection: The data is viewed successfully, but it is not ...
- 825 Views
- 1 replies
- 0 kudos
- 0 kudos
@Iguinrj11 wrote:I connected two .pbix files to the local server. In the first, I used Import connectivity, and in the second, Direct Query connectivity. However, I encountered the following problems: Import connection: The data is viewed successfull...
- 0 kudos
- 1774 Views
- 5 replies
- 0 kudos
Building a Custom Usage Dashboard using APIs for Job-Level Cost Insights
Since Databricks does not provide individual cost breakdowns for components like Jobs or Compute, we aim to create a custom usage dashboard leveraging APIs to display the cost of each job run across Databricks, Azure Data Factory (ADF), or serverless...
- 1774 Views
- 5 replies
- 0 kudos
- 0 kudos
Hey,Yes, I am not Azure expert but, Databricks REST API can help you extract usage data for serverless resources, allowing you to integrate this information into custom dashboards or external tools like Grafana.On the Azure side, costs related to wil...
- 0 kudos
