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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

NOOR_BASHASHAIK
by Databricks Partner
  • 1495 Views
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Read metadata through JDBC driver

Dear all, The Spark JDBC driver (SparkJDBC42.jar) is unable to capture certain information from the below table structure: 1. table level comment 2. the TBLPROPERTIES key-value pair information 3. PARTITION BY information However, it captures the co...

  • 1495 Views
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bruno_duarte
by New Contributor
  • 6724 Views
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Resolved! Cluster does not start (Coursera Training Distributed Computing with Spark SQL)

Following the instruction on Week 1 > The Databricks Environment, it is supposed to create a new cluster. However, the cluster is not starting or able to attached notebook and due that I can not continue the tasks/assignments. related documents not...

  • 6724 Views
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motuchsznajder
New Contributor II
  • 0 kudos

Hey there, creating a cluster at the Community Edition is showing the same problem as last week. This time, I'm not getting any error coz the process of creating it is taking forever. Any suggestion, @databricks?

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vas610
by New Contributor III
  • 5173 Views
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Error loading h2o model in mlflow

I'm getting the following error when I'm trying to load a h2o model using mlflow for prediction Error: Error Job with key $03017f00000132d4ffffffff$_990da74b0db027b33cc49d1d90934149 failed with an exception: java.lang.IllegalArgumentException:...

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Latest Reply
Dan_Z
Databricks Employee
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I ran this in Databricks and it worked with no issues. I suggest you make sure your wget path is correct, because the one you posted downloads HTML, not the raw csv. That may cause the problem. %sh wget https://raw.githubusercontent.com/mlflow/mlflo...

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GabrieleMuciacc
by New Contributor III
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Query table access control metadata from Databricks SQL

I'm trying to create a dashboard in Databricks SQL, parameterized by table name. We have a metadata table which contains the names of all the eligible tables, and we use it to populate a drop-down box for the dashboard. This is a simplified version ...

  • 1771 Views
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justinbuo53
by New Contributor
  • 1483 Views
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Azure Databricks, how to learn to use practically?

Not sure whether better do ask this in an Azure or Spark subject, but I thought I might get responses appropriate to our use cases here. We have Azure Databricks set up and working, and not had any problems following along the tutorials, but I don't...

  • 1483 Views
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hasinketi48
by New Contributor
  • 1180 Views
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How is Databricks Spark different than Spark?

Hey guys, I am looking to create a real-time analytics application and I am pretty new to Data engineering. Any advice here would be appreciated. So I have been l appvalleyooking into spark streaming for my transformation process, so th tutuappe ove...

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lawregill92
by New Contributor
  • 1417 Views
  • 1 replies
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Question About Access and Filter Data in Databricks

Hi guys, im new using databricks and i have a challenge in my new work. routerlogin I need to access to one the database (the database is on DBFS) result of some ETLS trough any service, can be ODBC or by some API. I need to connect there because I...

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Latest Reply
Dan_Z
Databricks Employee
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Use the Simba ODBC connector: https://docs.databricks.com/integrations/bi/jdbc-odbc-bi.html

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Skier
by New Contributor
  • 4335 Views
  • 1 replies
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Multiple Clusters stuck in pending state during creation.

I have been trying to create a new cluster to use and multiple attempts have gotten stuck in pending: "Finding instances for new nodes, acquiring more instances if necessary" until they time out. Up to today I have had no problems creating clusters ...

  • 4335 Views
  • 1 replies
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Latest Reply
Dan_Z
Databricks Employee
  • 1 kudos

This is typically a cloud provider issue. You can file a support ticket if the issue persists.

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maffeenAF
by New Contributor
  • 1993 Views
  • 1 replies
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How do I make approxSimilarityJoin work on 25k 300-d vectors?

I’m trying to use LSH approxSimilarityJoin on a dataset with ~25k 300-d vectors of floats. It gets stuck and eventually fails with ’Slave lost’ error. The size of cluster and memory are likely not a problem, the failure happens even with 16 nodes, 1...

  • 1993 Views
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Latest Reply
Dan_Z
Databricks Employee
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Use a PandasUDF with Arrow enabled. They are improved in Spark 3, but you can use them in Spark 2.4.5.

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davidmory38
by New Contributor
  • 3860 Views
  • 1 replies
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Best Database for facial recognition/ Fast comparisons of Euclidean distance

Hello people,I'm trying to build a facial recognition application, and I have a working API, that takes in an image of a face and spits out a vector that encodes it. I need to run this on a million faces, store them in a db and when the system goes o...

  • 3860 Views
  • 1 replies
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Latest Reply
Dan_Z
Databricks Employee
  • 0 kudos

You could do this with Spark storing in parquet/Delta. For each face you would write out a record with a column for metadata, a column for the encoded vector array, and other columns for hashing. You could use a PandasUDF to do the distributed dista...

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austiamel47
by New Contributor
  • 1653 Views
  • 1 replies
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Databricks delta lake

Can we use databricks delta lake as a data warehouse kind of thing where business analysts can explore data according to their needs ? Delta lake provides following features which I think supports this idea support to sql syntaxprovide ACID guarante...

  • 1653 Views
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Latest Reply
Dan_Z
Databricks Employee
  • 0 kudos

@austiamel47, Yes, you can certainly do this. Delta Lake is designed to be competitive with traditional data warehouses and with some tuning can power low-latency dashboards.https://databricks.com/glossary/data-lakehouse

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Ryan_Chynoweth
by Databricks Employee
  • 3394 Views
  • 1 replies
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  • 3394 Views
  • 1 replies
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Latest Reply
Ryan_Chynoweth
Databricks Employee
  • 2 kudos

Yes. A new workspace would need to be deployed because Azure allows people to change the vnet cidr but it requires you to remove all the vnet resources first. This includes the Databricks deployment, therefore, this is an Azure restriction on how VNE...

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wallystart
by New Contributor III
  • 1918 Views
  • 0 replies
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Is possible to use jupyter extensions in databricks?

Hi, we need create an interactive map from ipyleaflet library and this use jupyterlab extensionjupyter labextension install @jupyter-widgets/jupyterlab-manager jupyter-leafletWe achieved to show with displayHTML but we lose the widget events

  • 1918 Views
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