- 802 Views
- 1 replies
- 1 kudos
Resolved! How Auto Loader works – file level or row level?
Does Auto Loader work on file level or row level? If it works on file level and does not process the same file again, then how can we make it pick only the new rows when data is appended to that file?
- 802 Views
- 1 replies
- 1 kudos
- 1 kudos
Hi @Akshay_Petkar ,Autoloader works on file level. Now, by default autoloader is configured with following option:cloudFiles.allowOverwrites = falseSo, above option causes files to be processed exactly once. But when you switch this option to true, t...
- 1 kudos
- 3220 Views
- 8 replies
- 1 kudos
Resolved! Accessing parameter defined in python notebook into sql notebook.
Hi All,I have one python notebook(../../config/param_notebook), where all parameters are defined, like:dbutils.widgets.text( "catalog", "catalog_de")spark.conf.set( "catalog.name", dbutils.widgets.get( "catalog"))dbutils.widgets.text( "schema", "emp"...
- 3220 Views
- 8 replies
- 1 kudos
- 1 kudos
Hi all,I have a SQL notebook that contains the following statement:CREATE OR REPLACE MATERIALIZED VIEW ${catalog_name}.${schema_name}.emp_table ASSELECT ...I’ve configured the values for catalog_name and schema_name as pipeline parameters in my DLT p...
- 1 kudos
- 851 Views
- 1 replies
- 1 kudos
Resolved! Notebook dashboard export unavailable
Hello,Recent changes in the databricks notebook dashboards have removed the option to download the dashboard as HTML.Previously it was possible to download it from the notebook dashboard view. Currently it's only possible to download the notebook its...
- 851 Views
- 1 replies
- 1 kudos
- 1 kudos
Hello @amrim! You're right to flag this, thank you for bringing it up. I’ll check internally for any upcoming changes regarding this feature or alternative ways to download the notebook dashboard in HTML format. I’ll get back to you once I have an up...
- 1 kudos
- 858 Views
- 1 replies
- 0 kudos
Reading a large zip file containing NDJson file in Databricks
Hi,We have a 5 GB ZIP file stored in ADLS. When uncompressed, it expands to approximately 115 GB and contains multiple NDJSON files, each around 200 MB in size. We need to read this data and write it to a Delta table in Databricks on a weekly basis.W...
- 858 Views
- 1 replies
- 0 kudos
- 0 kudos
Unzip the Archive FileApache Spark cannot directly read compressed ZIP archives, so the first step is to decompress the 5 GB file. Since the uncompressed size is substantial (115 GB), the process must be handled carefully to avoid overwhelming the dr...
- 0 kudos
- 1966 Views
- 5 replies
- 3 kudos
Resolved! Enable to use library GraphFrames
Hello,I am trying to install and use the library GraphFrames but keep receiving the following error: "AttributeError: 'SparkSession' object has no attribute '_sc'".I have tried to install the library on my all-purpose cluster (Access mode: Standard)....
- 1966 Views
- 5 replies
- 3 kudos
- 3 kudos
@szymon_dybczak Thanks for the responses. I indeed changed my all-purpose cluster access mode and it worked. I figured that was a nicest option than changing the runtime.
- 3 kudos
- 2218 Views
- 2 replies
- 0 kudos
Resolved! Use of Python variable in SQL cell
If using spark.conf.set(<variable_name>, <variable_value>), or just referring a widget value directly, in a Python cell and then referring to it in a SQL cell with ${variable_name} one gets the warning: "SQL query contains a dollar sign parameter, $p...
- 2218 Views
- 2 replies
- 0 kudos
- 3448 Views
- 1 replies
- 0 kudos
Oracle JDBC Load Fails with Timestamp Partitioning (lowerBound/upperBound)
Hi everyone,I'm trying to read data from an Oracle database into Databricks using JDBC with timestamp-based partitioning. However, it seems that the partitioning doesn't work as expected when I specify lowerBound and upperBound using timestamp string...
- 3448 Views
- 1 replies
- 0 kudos
- 0 kudos
@pavlosskev Could you try adding the following option as well to your read? .option("sessionInitStatement", "ALTER SESSION SET NLS_TIMESTAMP_FORMAT = 'YYYY-MM-DD HH24:MI:SS'") df = ( spark.read.format("jdbc") .option("url", jdbcUrl) .opti...
- 0 kudos
- 1139 Views
- 1 replies
- 1 kudos
Resolved! E series vs F series VM's
Hi all,I need to run weekly maintenance on approximately 7,000 tables in my Databricks environment, involving OPTIMIZE, VACUUM, and ANALYZE TABLE (for statistics calculation) on all tables.My question is: between the Ev4, Edv4, and Fsv2 VM series, wh...
- 1139 Views
- 1 replies
- 1 kudos
- 1 kudos
@Sainath368 OPTIMIZE and VACUUM are compute-intensive operations, so you can choose a compute-optimized instance like the F series for both drivers and workers, which has a higher CPU-to-memory ratio. If its UC managed table, I recommend enabling Pr...
- 1 kudos
- 30787 Views
- 4 replies
- 4 kudos
Resolved! PySpark: Writing Parquet Files to the Azure Blob Storage Container
Currently I am having some issues with the writing of the parquet file in the Storage Container. I do have the codes running but whenever the dataframe writer puts the parquet to the blob storage instead of the parquet file type, it is created as a f...
- 30787 Views
- 4 replies
- 4 kudos
- 4 kudos
This is my approach:from databricks.sdk.runtime import dbutils from pyspark.sql.types import DataFrame output_base_url = "abfss://..." def write_single_parquet_file(df: DataFrame, filename: str): print(f"Writing '{filename}.parquet' to ABFS") ...
- 4 kudos
- 943 Views
- 1 replies
- 0 kudos
How to create a SparkSession in jobs run-unit-tests
I’m converting my Python unit tests to run with databricks jobs run-unit-tests.Each test needs a SparkSession, but every pattern I try What I tried1. Create my own local Sparkspark = (SparkSession.builder.master("local[*]").appName("unit-test").getOr...
- 943 Views
- 1 replies
- 0 kudos
- 0 kudos
Hi @yhu126 ,Maybe below blog post give you some inspiration:Writing Unit Tests for PySpark in Databricks: Appr... - Databricks Community - 122398
- 0 kudos
- 2437 Views
- 7 replies
- 1 kudos
Resolved! Unable to resolve column error while trying to query the view
I have a federated table from snowflake in data bricks say employee.When i executed print schema i am able to see schema as "employeeid": long,"employeename":stringTried to create a view as create view vw_emp with schema binding as select `"employeei...
- 2437 Views
- 7 replies
- 1 kudos
- 1 kudos
Hi @nkrom456 ,Try something like this. If you are using backticks it treats a column name exactly as you type (in this case it treats double quotes as a part of a colum name)create view vw_emp with schema binding as select `employeeid` from employee ...
- 1 kudos
- 7155 Views
- 6 replies
- 1 kudos
Resolved! Databricks asset bundles job and pipeline
Hello, I'm looking to create a job which is linked to a delta live table. Given the job code like this: my_job_name: name: thejobname schedule: quartz_cron_expression: 56 30 12 * * ? timezone_id: UTC pause_stat...
- 7155 Views
- 6 replies
- 1 kudos
- 1 kudos
This ended a frustrating search! Would be great to add this to the documentation instead of "go to portal and copy paste the id"!!!
- 1 kudos
- 661 Views
- 1 replies
- 2 kudos
Machine type for different operations in Azure Databricks
Dear alldo we have a general recommendation for the virtual machine type to be used for different operations in Azure Databricks? we are looking for the below -1. VACUUM 2. OPTIMIZE 3. ANALYZE STATS 4. DESCRIBE TABLE HISTORYI understood at a high lev...
- 661 Views
- 1 replies
- 2 kudos
- 2 kudos
Hi @noorbasha534 ,Here's a general recommendation from Databricks. So they're recommending to run OPTIMIZE on compute optimized VMs and VACUUM on general purpose.Comprehensive Guide to Optimize Data Workloads | DatabricksBut as you said, VACCUM is co...
- 2 kudos
- 29521 Views
- 15 replies
- 3 kudos
Does "databricks bundle deploy" clean up old files?
I'm looking at this page (Databricks Asset Bundles development work tasks) in the Databricks documentation.When repo assets are deployed to a databricks workspace, it is not clear if the "databricks bundle deploy" will remove files from the target wo...
- 29521 Views
- 15 replies
- 3 kudos
- 3 kudos
@JamesGraham this issue is related to "databricks bundle deploy" command itself, when run inside ci/cd pipeline, i am still seeing old configs in bundle.tf.json. Ideally it should be updated to changes done from previous run. But i am still seeing er...
- 3 kudos
- 26011 Views
- 4 replies
- 4 kudos
Resolved! Load Data from Sharepoint Site to Delta table in Databricks
Hi New to the community so sorry if my post lacks detail.I am trying to create a connection between databricks and a sharepoint site to read excel files into a delta tableI can see there is a FiveTran partner connection that we can use to get sharepo...
- 26011 Views
- 4 replies
- 4 kudos
- 4 kudos
@Ajay-Pandey can we connect using user ID without using client id and secrets
- 4 kudos
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