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Data Engineering
Join discussions on data engineering best practices, architectures, and optimization strategies within the Databricks Community. Exchange insights and solutions with fellow data engineers.
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Forum Posts

CaptainJack
by • New Contributor III
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Giving coworker "runing" permision on workflow but without allowing him access to notebooks.

I noticed that there is can_manage_run permission on workflow level, and someone can run a workflow only with these permission (without needing can_run permission on notebook level). Problem is that coworker can go to run details and then click on ta...

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Ravivarma
Databricks Employee
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Hello @CaptainJack , In Databricks, the can_manage_run permission lets a user manage workflow executions but does not hide the code in the tasks. If someone has this permission, they can see the details and code of the workflow runs. At...

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yj940525
by • New Contributor III
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question of changing cluster key in liquid cluster

If i already have a cluster key1 for existing table, i want to change cluster key to key2 using ALTER TABLE table CLUSTER BY (key2), then run OPTIMIZE table, based on databrick document , existing files will not be rewritten (verified by my test as w...

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Therdpong
by • New Contributor III
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Resolved! How to migrate Delta live table.

I need guidance on migrating the Delta live table to another pipeline without a full refresh

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Hkesharwani
Contributor II
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Hi, Yes you can use the same checkpoint location in the new pipeline.

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yatharth
by • New Contributor III
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AWS CLI Commands

I wish to run aws CLI command in databricks, is there a way i can achieve the same, to be more specific i would like to run:aws cloudwatch get-metric-statistics --metric-name BucketSizeBytes --namespace AWS/S3 --start-time 2017-03-06T00:00:00Z --end-...

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Yeshwanth
Databricks Employee
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@yatharth please check this: https://docs.databricks.com/en/compute/access-mode-limitations.html#network-and-file-system-access-limitations-for-unity-catalog-shared-access-mode:~:text=Cannot%20connect%20to%20the%20instance%20metadata%20service%20(IMD...

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harichand
by • New Contributor
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Missing Spark SQL Warehouse Folder in New Databricks Workspace (GCP)

We recently created a new Databricks workspace on the GCP platform. We noticed that the Spark SQL warehouse folder (/user/hive/warehouse) is not present by default, unlike in our previous workspaces. In our earlier Databricks workspaces, this folder ...

Data Engineering
warehouse hive
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Yeshwanth
Databricks Employee
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@harichand, could you please attach the screenshot where you see this path '/user/hive/warehouse' in both workspaces? [Old one and the new one]

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Karlo_Kotarac
by • Databricks Partner
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Different error handling behavior after DB runtime upgrade from 13.3 to 14.3

Hi! We want to upgrade the DB runtime on our clusters from 13.3 LTS to 14.3 LTS. Currently, everything looks good except for the different error-handling in the new runtime.For example, the error in the 13.3 LTS runtime looks familiar:while the same ...

Karlo_Kotarac_0-1717743717317.png Karlo_Kotarac_1-1717743788282.png Karlo_Kotarac_3-1717743912995.png
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Yeshwanth
Databricks Employee
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@Karlo_Kotarac Where do you see this error:   

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thiagoawstest
by • Contributor
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Resolved! mount bucket s3

Hi, I have Databricks configured on AWS, I need to mount some S3 buckets on Databricks in /mnt, but I have some questions:- How can a bucket be mounted for all clusters and users to have access to, so as not to need to mount it every time the cluster...

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Yeshwanth
Databricks Employee
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@thiagoawstest To mount an S3 bucket in Databricks on AWS so that all clusters and users have access to it without needing to remount each time, and without creating an access key in AWS, follow these steps:  Mounting an S3 Bucket Using an AWS Instan...

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saikumar_ganji
by • Databricks Partner
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DATABRICKS DATA ENGINEER ASSOCIATE EXAM GOT SUSPENDED

I encountered Pathetic experience while attempting my Databricks certification. Abruptly, Proctor asked me to show my desk, after showing he/she asked multiple times and then suspended my exam, saying I have exceeded eyes movement and I almost comple...

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saikumar_ganji
Databricks Partner
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@Cert-Team @Cert-TeamOPS @Retired_mod Can you please look into this issue. I have to complete my exam asap

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Karlo_Kotarac
by • Databricks Partner
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Run failed with error message ContextNotFound

Hi all!Recently we've been getting lots of these errors when running Databricks notebooks:At that time we observed DRIVER_NOT_RESPONDING (Driver is up but is not responsive, likely due to GC.) log on the single-user cluster we use.Previously when thi...

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Karlo_Kotarac
Databricks Partner
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In case somebody else runs into the same issue: After investigation from Databricks support the conclusion was that the driver's memory was overloaded ('Driver Not Responding' error message in the event log) but it can happen that we don't get the co...

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Lily99
by • New Contributor
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SQL function does not work in 'Create Function'

This SQL statement works fine by itself SELECT COUNT(1) FROM tablea f INNER JOIN tableb t ON lower(f.col1) = t.col1but if I want to use it inside a function:​CREATE OR REPLACE FUNCTION fn_abc(var1 ...

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lucasrocha
Databricks Employee
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Hello @Lily99 , I hope this message finds you well. Could you please try the code below and let me know the results? CREATE OR REPLACE FUNCTION fn_abc(var1 STRING, var2 STRING) RETURNS DOUBLECOMMENT 'test function'RETURN SELECT    CASE    WHEN EXISTS...

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Yash_542965
by • Databricks Partner
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DLT aggregation problem

I'm utilizing SQL to perform aggregation operations within a gold layer of a DLT pipeline. However, I'm encountering an error when running the pipeline while attempting to return a data frame using spark.sql.Could anyone please assist me with the SQL...

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lucasrocha
Databricks Employee
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Hello @Yash_542965 , I hope this message finds you well. Could you please share a sample of code you are using so that we can check it further? Best regards,Lucas Rocha

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vijaykumarbotla
by • New Contributor III
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Databricks Notebook error : Analysis Exception with multiple datasets

Hi All,I am getting below error when trying to execute the code.AnalysisException: Column Is There a PO#17748 are ambiguous. It's probably because you joined several Datasets together, and some of these Datasets are the same. This column points to ...

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lucasrocha
Databricks Employee
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Hello @vijaykumarbotla , I hope you're doing well. This is probably because both DataFrames contain a column with the same name, and Spark is unable to determine which one you are referring to in the select statement. To resolve this issue, you can u...

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DataAlchemist28
by • Databricks Employee
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lucasrocha
Databricks Employee
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Hello @DataAlchemist28 , I hope this message finds you well. Delta Live Tables supports loading data from any data source supported by Databricks. You can find the datasources supported here Connect to data sources, and JDBC is one of them. You can a...

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Sambit_S
by • New Contributor III
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Exceptions are Not Getting Handled In Autoloader Write Stream

I have below logic implemented using Databricks Autoloader. ## Autoloader Write stream: Its calling forEachBatch function to write into respective datatype catalog table#  and using checkpoint to keeps track of processing files.try:    ##Observe raw ...

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raphaelblg
Databricks Employee
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Hello @Sambit_S ,In your scenario, there is a merge failure. Your query won't be able to progress as the problematic batch can't be committed to sink. Even if you handle the exception in a try catch block, it's impossible for the autoloader to update...

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tgen
by • New Contributor II
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Increase stack size Databricks

Hi everyoneI'm currently running a shell script in a notebook, and I'm encountering a segmentation fault. This is due to the stack size limitation. I'd like to increase the stack size using ulimit -s unlimited, but I'm facing issues with setting this...

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