- 6657 Views
- 7 replies
- 5 kudos
Resolved! Are there any student discounts or coupons for the Databricks Data Engineer Associate certification
I’m planning to take the Databricks Data Engineer Associate certification exam, and I wanted to ask if there are any official discounts, coupons, or student offers available to help reduce the exam fee.I’m a student right now, so any discount or prom...
- 6657 Views
- 7 replies
- 5 kudos
- 4449 Views
- 3 replies
- 4 kudos
Auto Loader Schema Hint Behavior: Addressing Nested Field Errors
Hello,I'm using the auto loader to stream a table of data and have added schema hints to specify field values.I've observed that when my initial data file is missing fields specified in the schema hint,the auto loader correctly identifies this and ad...
- 4449 Views
- 3 replies
- 4 kudos
- 4 kudos
Hi, we are having similar issues with schema hints formulated in fully qualified DDL, e.g. "a STRUCT<b INT>" etc. Did you find a solution? Also, did you specify the schema hint using the dot-notation, e.g. "a.b INT" before ingesting any data or after...
- 4 kudos
- 1549 Views
- 1 replies
- 0 kudos
Performance Behavior of MERGE with Partitioned Table: Impact of ZORDER and Deletion Vectors
Hi Databricks Community,I’m analyzing the performance of Delta Lake MERGE operations on a partitioned table, and I observed unexpected behavior across 3 test cases.I wanted to share my findings to better understand:Why ZORDER or Deletion Vectors help...
- 1549 Views
- 1 replies
- 0 kudos
- 0 kudos
Hi @pooja_bhumandla Thanks for such a nice and detailed description of Your case, that really helps to understand the scenario Regarding Your questions:1)Overall operation could become more complex due to:a) deletion vector creation and maintenance,b...
- 0 kudos
- 4102 Views
- 1 replies
- 2 kudos
Delta Lake File Sizes - optimize maxfilesize, tunefilesizesforrewrites
hello allwhile reading content that provides guidance on delta lake file size, i realized tuneFileSizesForRewrites behind the scenes targets for 256 MB file size.and optimize.maxFileSize will target for 1 GB file ((reference : https://docs.databricks...
- 4102 Views
- 1 replies
- 2 kudos
- 2 kudos
hello @noorbasha534 That's very interesting topic regarding fine-tuning file sizes under delta table.Answering Your questions:1)I use spark.databricks.delta.optimize.maxFileSize and set maximum file size for optimize command. Its working for me just ...
- 2 kudos
- 1549 Views
- 2 replies
- 3 kudos
Resolved! Bug Report: SQL Editor, Run Now button run query from different query file/tab
When I click Run Now button or press (Command + Enter), the editor somehow executed query from another query file/tab. I can only use Run Selected for now. Clear cache and re-login didn't solve the problem.Please see the screen recording herehttps://...
- 1549 Views
- 2 replies
- 3 kudos
- 3 kudos
Hello @Bank_Kirati! Thanks for sharing the screen recording. I’m unable to reproduce the issue on my end. Could you try toggling the New SQL Editor off and on, and see if that makes a difference? Also, please check if this happens only with specific ...
- 3 kudos
- 1099 Views
- 1 replies
- 1 kudos
Partner Academy Login Issue
Hi Team, I mam facing the issue with the partner academy login.
- 1099 Views
- 1 replies
- 1 kudos
- 1 kudos
Hello @Nidhig! From the screenshot, it appears you're not currently authorized to access the Partner Academy. In this case please raise a ticket with the Databricks Support Team. They’ll be able to investigate further and assist you with gaining acce...
- 1 kudos
- 2570 Views
- 3 replies
- 1 kudos
Resolved! Error Logging and Orchastration In Databricks
Hello,May someone please Help me designing the Error Logging and How to do orchestration for Pipeline below.I am pulling data from Bronze layer and pushing it to silver layer after transformation.1. How to do Error Logging and where to store2. How to...
- 2570 Views
- 3 replies
- 1 kudos
- 1 kudos
@Brahmareddy : Thanks a lot. do you have any page which shows real implementation, if handy. Kindly share.
- 1 kudos
- 980 Views
- 2 replies
- 0 kudos
Will Unsetting delta.targetFileSize During Data Load Cause Any Issues?
Hi,If I unset the Spark config delta.targetFileSize (e.g., using alter) while a data load is in progress (batch or streaming), will it cause any issues?Will the load fail or behave inconsistently due to the config being changed mid-process?Thanks!
- 980 Views
- 2 replies
- 0 kudos
- 0 kudos
Hi pooja_bhumandla,How are you doing today? In general, changing the delta.targetFileSize config while a batch or streaming load is in progress won’t crash your job, but it may lead to inconsistent behavior during that specific run. Spark jobs usuall...
- 0 kudos
- 2242 Views
- 1 replies
- 0 kudos
Read Snowflake Iceberg tables from Databricks UC
Hi folks!I'm trying to read Iceberg tables that I created in Snowflake from Databricks using catalog federation. I set up a connection to Snowflake, configured an external location pointing to the S3 folder that contains the Iceberg files, and used t...
- 2242 Views
- 1 replies
- 0 kudos
- 0 kudos
Hey @jeanptello It’s possible that there’s a mismatch between what Snowflake has written and what Databricks is trying to read. This often happens if Snowflake has performed an operation that rewrites the table files (like compaction or a bulk update...
- 0 kudos
- 3628 Views
- 7 replies
- 0 kudos
Does too many parquet files in delta table impact writes for the streaming job
Hello,I am running a spark streaming job that reads data from AWS Kinesis and writes data to extrenal delta tables which are stored in S3. But I have noticed that over the time, the latency has been increasing. I also noticed that for each batch, the...
- 3628 Views
- 7 replies
- 0 kudos
- 0 kudos
Hello @VaderKB You're right that OPTIMIZE makes reads faster by reducing the number of files. For writes using append mode, it doesn't directly speed up the operation itself. However, having fewer, larger files from a previous OPTIMIZE run can improv...
- 0 kudos
- 2090 Views
- 2 replies
- 0 kudos
Autoloader with file notifications on a queue that is on a different storage account to the blobs
Hello,I am trying to set up autoloader using file notifications but as the storage account we are reading from is a premium storage account we have setup event subscriptions to pump the blob events to queues that exist on a standard gen 2 storage acc...
- 2090 Views
- 2 replies
- 0 kudos
- 0 kudos
Hi @ChrisLawford_n1 So in your case, it's not able to resolve the file paths from the event notificationsbecause they're pointing to a different storage account (Storage Account 1), which is not associated with the queue.Use a StorageV2 Account for B...
- 0 kudos
- 867 Views
- 2 replies
- 0 kudos
Unable to fetch 3rd level array using dot notation from a json data in local spark via VS Code
I am able to fetch 3rd level array using dot notation from a json in Databricks but same code is not working in local spark via VS Code.Example - df.select(F.col('x.y.z')) where x is array, y is array and z is also an array.In local spark I am gettin...
- 867 Views
- 2 replies
- 0 kudos
- 0 kudos
Hi @Ritasree ,When you're saying about local spark you mean that you've configured it locally, or are you using Databricks Connect? If you're configured spark locally, then check what version of Spark you're using.
- 0 kudos
- 1648 Views
- 2 replies
- 0 kudos
Resolved! Legacy hive_metatstore corruption
I am seeing some legacy hive_metastore corruption (especially tables created as parquet instead of Delta) lately in my client's place, who is in the midst of migrating to UC. We were provided with a Scala code to remove the erroneous Parquet files ph...
- 1648 Views
- 2 replies
- 0 kudos
- 0 kudos
HI @thbeh_com Yes, this is a fairly common issue during UC migrations, especially with legacy Hive metastore tables. The corruption typically happens because:- Metadata-data misalignment - Hive metastore references files that no longer exist or have ...
- 0 kudos
- 3936 Views
- 1 replies
- 1 kudos
Resolved! Spark Structured Streaming Timeout Waiting for KafkaAdminClient Node Assignment on Amazon MSK
Hello! I’m having trouble establishing a Kafka connection between my Databricks notebook and my Kafka server in Amazon MSK. I’ve run some tests and I’m really stuck—I hope someone can help me.I have two brokers. First, I checked connectivity with:%sh...
- 3936 Views
- 1 replies
- 1 kudos
- 1 kudos
We found the solution!, thanks to a Databricks architect here’s how we ultimately fixed it: 1.- Copy the JVM’s cacerts into a volume so Spark can trust Amazon’s MSK certificate bundle. From a notebook cell with shell access, run:%sh JAVA_HOME=$(dirna...
- 1 kudos
- 1234 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?
- 1234 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
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