- 504 Views
- 1 replies
- 2 kudos
Events subscription in Databricks delta tables
Dear all, We are maintaining a global/enterprise data platform for a customer.We like to capture events based on data streaming happening on Databricks based delta tables. ((data streams run for at least 15 hrs a day; so, events should be generated b...
- 504 Views
- 1 replies
- 2 kudos
- 2 kudos
Hi noorbasha534,How are you doing today?, As per my understanding, what you're looking to build is a really powerful and smart setup—kind of like a data-driven event notification system for streaming Delta tables. While there’s no out-of-the-box feat...
- 2 kudos
- 697 Views
- 1 replies
- 1 kudos
Auto Loader bringing NULL Records
Hi I am using auto loader to fetch some records stored in two files. Please see below my code. It fetches records from two files correctly and then it starts fetching NULL records. I attach option("cleanSource", ) to readStream. But it is ...
- 697 Views
- 1 replies
- 1 kudos
- 1 kudos
Hi subhas,How are you doing today?, As per my understanding, It looks like the issue is happening because you're using /FileStore, which isn’t fully supported by Autoloader’s cleanSource option. Even though the code looks mostly fine, Autoloader expe...
- 1 kudos
- 511 Views
- 1 replies
- 2 kudos
Resolved! OPTIMIZE command on heavily nested table OOM error
I'm trying to run the OPTIMIZE command on a table with less than 2000 rows, but it is causing an out of memory issue. The problem seems to come from the fact that it is a heavily nested table in staging between a json file and flattened table. The ta...
- 511 Views
- 1 replies
- 2 kudos
- 2 kudos
Hi cmathieu,How are you doing today?, As per my understanding, Yeah, this sounds like one of those cases where the data volume is small, but the complexity of the schema is what’s causing the trouble. If your table has deeply nested JSON structures, ...
- 2 kudos
- 918 Views
- 3 replies
- 1 kudos
Build a streaming table on top of a snowflake table
Is it possible to create a streaming table on top of a snowflake tablel accessible via the Lakehouse Federation?
- 918 Views
- 3 replies
- 1 kudos
- 1 kudos
Hi abelian-grape,How are you doing today?, As per my understanding, Right now, it’s not possible to create a streaming table directly on top of a Snowflake table that’s accessed through Lakehouse Federation in Databricks. Lakehouse Federation allows ...
- 1 kudos
- 4579 Views
- 2 replies
- 1 kudos
Cost of using delta sharing with unity catalog
I am new to databricks delta sharing. In case of delta sharing, i don't see any cluster running. Tried looking for documentation but only hint i got is, it usage delta sharing server but what is the cost of it and how to configure and optimize for la...
- 4579 Views
- 2 replies
- 1 kudos
- 1 kudos
@RajNath I am also looking for information around this. as far as I understood, it uses provider side compute. did you get the same info?...
- 1 kudos
- 1069 Views
- 3 replies
- 1 kudos
Resolved! Issue while reading external iceberg table from GCS path using spark SQL
df = spark.sql("select * from bqms_table;"); df.show();ENV - DBRT 16.3 (includes Apache Spark 3.5.2, Scala 2.12)org.apache.iceberg:iceberg-spark-runtime-3.5_2.12:1.5.1 Py4JJavaError: An error occurred while calling o471.showString. : org.apache.spar...
- 1069 Views
- 3 replies
- 1 kudos
- 1 kudos
I tried given solutions but it seems issue still persist. Appreciate if it can be resolved by Databricks soon for better integration b/w GCP and Databricks .
- 1 kudos
- 838 Views
- 2 replies
- 0 kudos
Triggering Downstream Workflow in Databricks from New Inserts in Snowflake
Hi Databricks experts,I have a table in Snowflake that tracks newly added items, and a downstream data processing workflow that needs to be triggered whenever new items are added. I'm currently using Lakehouse Federation to query the Snowflake tables...
- 838 Views
- 2 replies
- 0 kudos
- 0 kudos
Hi abelian-grape,Great question! Since you're using Lakehouse Federation to access the Snowflake table, and Databricks can't directly stream from or listen to inserts in Snowflake, the best approach is to use an interval-based polling mechanism in Da...
- 0 kudos
- 2434 Views
- 1 replies
- 1 kudos
Vnet Gateway issues on Power bi Conn
Team,We are getting frequent vnet gateway failures on power bi Dataset using DAX(simple DAX not complex) and upon the rerun it is working, is any permanent fix for this ?Error :{"error":{"code":"DM_GWPipeline_Gateway_MashupDataAccessError","pbi.error...
- 2434 Views
- 1 replies
- 1 kudos
- 1 kudos
Similar issue. Any solution?
- 1 kudos
- 20395 Views
- 18 replies
- 18 kudos
Resolved! How to connect Neo4j aura to a cluster
Please help resolve this error :org.neo4j.driver.exceptions.SecurityException: Failed to establish secured connection with the serverThis occurs when I want to establish a connection to neo4j aura to my cluster .Thank you.
- 20395 Views
- 18 replies
- 18 kudos
- 18 kudos
I have added the init script on cluster start up in Spark->config->init.scripts. But my clsuter won't start after this.Cluster scoped init script /Volumes/xxx/xxx/neo4j/neo4j-init.sh failed: Script exit status is non-zero. Could you please help me or...
- 18 kudos
- 712 Views
- 3 replies
- 0 kudos
differences between notebooks and notebooks that run inside a job
Hello Community,I'm facing an issue with a job that runs a notebook task. When I run the same join condition through the job pipeline, it produces different results compared to running the notebook interactively (outside the job).Why might this be ha...
- 712 Views
- 3 replies
- 0 kudos
- 0 kudos
Hi,Thanks for your question!What I'm doing is essentially loading a table from PostgreSQL using a Spark JDBC connection, and also reading the corresponding table from Databricks. I then perform delete, update, and insert operations by comparing the ...
- 0 kudos
- 1323 Views
- 3 replies
- 0 kudos
Resolved! Job compute is taking longer even after using pool
Hi team,We created a workflow and attached it to a job cluster (which is configured to use compute pool). When we run the pipeline, it takes up to 5 minutes to go into clusterReady state and this is adding latency to our use case. Even with subsequen...
- 1323 Views
- 3 replies
- 0 kudos
- 0 kudos
Hey @bhargavabasava ,Job Cluster + Compute Pools: Long Startup TimesIf you’re using Job Clusters backed by compute pools, the initial delay (~5 minutes) is usually due to cluster provisioning. While compute pools are designed to reduce cold start tim...
- 0 kudos
- 1122 Views
- 5 replies
- 0 kudos
Resolved! How to delete/empty notebook output
I need to clear cell output in Databricks notebooks using dbutils or the API. As for my requirements, I need to clear it for data security reasons. That is, given a notebook's PATH, I would like to be able to clear all its outputs, as is done through...
- 1122 Views
- 5 replies
- 0 kudos
- 0 kudos
For Programmatic approach, you can also clear the each cell output individually using IPython package. Unfortunately, you need to do this in each and every cell. from IPython.display import clear_output clear_output(wait=True)
- 0 kudos
- 935 Views
- 3 replies
- 0 kudos
Resolved! Delete files from databricks Volumes based on trigger
Hi,I noticed there's a file arrival trigger option in the workflow but cant see delete trigger option. However, let's say I want to delete files from the Databricks volume based on this trigger, and also remove the corresponding records from the bron...
- 935 Views
- 3 replies
- 0 kudos
- 0 kudos
Currently, Databricks doesn’t offer a built-in file deletion trigger mechanism similar to the file arrival trigger. The file arrival trigger only monitors for new files being added to a location, not for files being deleted.
- 0 kudos
- 16244 Views
- 8 replies
- 1 kudos
Reading external Iceberg table
Hi all, I am trying to Read an external Iceberg table. A separate spark sql script creates my Iceberg table and now i need to read the Iceberg tables(created outside of databricks) from my Databricks notebook. Could someone tell me the approach for ...
- 16244 Views
- 8 replies
- 1 kudos
- 1 kudos
Hi, I'm facing the same problem.However, when set the access mode to "No isolation shared" I loose access to the external location where the Iceberg table resides. Is there a way to force Spark to NOT use catalog even when in the "Standard (formerly ...
- 1 kudos
- 705 Views
- 1 replies
- 1 kudos
from_utc_time gives strange results
I don't understand why from_utc_time(col("original_time"), "Europe/Berlin") changes the timestamp instead of just setting the timezone. That's a non-intuitive behaviour. spark.conf.set("spark.sql.session.timeZone", "UTC")from pyspark.sql import Row...
- 705 Views
- 1 replies
- 1 kudos
- 1 kudos
Hello @nielsehlers! Just to clarify, PySpark's from_utc_timestamp converts a UTC timestamp to the specified timezone (in this case it's Europe/Berlin), adjusting the actual timestamp value rather than just setting timezone metadata. This happens beca...
- 1 kudos
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