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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

MohamedThanveer
by New Contributor II
  • 2347 Views
  • 1 replies
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Databricks Certified Associate Developer for Apache Spark 3.0 - Python Cancellation

I have scheduled an examination on 1st June 2023 and due to personal reason, I have cancelled the examination on 26th May 2023 (more than 72 hours) but I am yet to receive the refund amount. In the auto generated mail it is mentioned that the refund ...

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Latest Reply
jose_gonzalez
Databricks Employee
  • 0 kudos

adding @Suteja Kanuri​  and @Vidula Khanna​ for visibility

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Ovi
by New Contributor III
  • 3254 Views
  • 1 replies
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Spark Dataframe write to Delta format doesn't create a _delta_log

Hello everyone, I have an intermittent issue when trying to create a Delta table for the first time in Databricks: all the data gets converted into parquet at the specified location but the _delta_log is not created or, if created, it's left empty, t...

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jose_gonzalez
Databricks Employee
  • 0 kudos

Can you list (display) the folder location "deltaLocation"? what files do you see here? have you try to use a new location for testing? do you get the same behavior?

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Torlynet
by New Contributor III
  • 3732 Views
  • 1 replies
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Can't access databricks

I was updated some scripts when I all of the sudden got a few "internal server errors". I refreshed the webpage a couple of times and now I am unable to login to databricks.When I try to sign in it thinks for a few seconds and then I am rerouted back...

Recording 2023-05-23 at 21.47.23
  • 3732 Views
  • 1 replies
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Latest Reply
jose_gonzalez
Databricks Employee
  • 3 kudos

what date and time this issue happened? are you still unable to access to your workspace?

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Kayla
by Valued Contributor II
  • 12113 Views
  • 1 replies
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Resolved! Pydoc / Documentation Module

Does anyone have a recommendation for something along the lines of Pydoc that can be used to aggregate docstrings and the like into documentation pages?I tried Pydoc and it failed because of the magic commands in my repo.

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User16539034020
Databricks Employee
  • 1 kudos

Sphinx could be an option here. It parses and render Databricks notebooks in the documentation. You might want to look into it to see if it fits your needs. However, it may not handle magic commands very well, and it assumes your notebooks are export...

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kfoster
by Databricks Partner
  • 3611 Views
  • 2 replies
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Terraform Global Init Script base64encoding

I am working on converting manual global init scripts into a terraform IaC process for multiple environments. Within terraform, we are using the resource "databricks_global_init_script" and set the content_base64 with the following:base64encoded(<<-...

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Latest Reply
Atanu
Databricks Employee
  • 3 kudos

I am looking into it @Kristian Foster​ Are you able to get it working?

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HanaSega_97455
by New Contributor II
  • 11371 Views
  • 2 replies
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Resolved! drop specific partition from a Delta Table

i have a delta table partitioned by a Date column , I'm trying to use the alter table drop partition command but get ALTER TABLE DROP PARTITION` is not supported for Delta tables erroris there a way to do it?

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Latest Reply
Anonymous
Not applicable
  • 3 kudos

Hi @Hanan Segal​ Thank you for posting your question in our community! We are happy to assist you.To help us provide you with the most accurate information, could you please take a moment to review the responses and select the one that best answers y...

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KiranKondamadug
by New Contributor II
  • 12057 Views
  • 1 replies
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Running into delta.exceptions.ConcurrentAppendException even after setting up S3 Multi-Cluster Writes environment via S3 Dynamo DB LogStore

My use-case is to process a dataset worth 100s of partitions in concurrency. The data is partitioned, and they are disjointed. I was facing ConcurrentAppendException due to S3 not supporting the “put-if-absent” consistency guarantee. From Delta Lake ...

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  • 1 replies
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Latest Reply
Debayan
Databricks Employee
  • 2 kudos

Hi, You can refer to https://docs.databricks.com/optimizations/isolation-level.html#conflict-exceptions and recheck if everything is alright. Please let us know if this helps, also please tag @Debayan​ with your next response which will notify me, Th...

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etsyal1e2r3
by Honored Contributor
  • 11923 Views
  • 1 replies
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Resolved! Compiling Flattened Dataframe back to Struct Columns

I have a dataframe with this format of columns:[`first.second.third` , `alpha.bravo.test1` , `alpha.bravo.test2`]I'd like to get an output dataframe of this:[ `first` | `alpha` ] ---------------...

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Latest Reply
etsyal1e2r3
Honored Contributor
  • 2 kudos

I have figured out the solution.

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fijoy
by Contributor
  • 3842 Views
  • 3 replies
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Is there a utility to convert between "/dbfs" and "dbfs:" path strings?

Is there a built-in utility function, e.g., dbutils, that can convert between path strings that start with "dbfs:" and "/dbfs"?Some operations, e.g, copying from one location in DBFS to another using dbutils.fs.cp() expect the path starting with "/db...

  • 3842 Views
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Latest Reply
Anonymous
Not applicable
  • 0 kudos

Hi @Fijoy Vadakkumpadan​ Thank you for posting your question in our community! We are happy to assist you.To help us provide you with the most accurate information, could you please take a moment to review the responses and select the one that best a...

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Jujiro
by New Contributor III
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  • 11 replies
  • 7 kudos

Random error: At least one column must be specified for the table?

I have the following code in a notebook. It is randomly giving me the error, "At least one column must be specified for the table." The error occurs (if at all it occurs) only on the first run after attaching to a cluster.Cluster details:Summary5-1...

dbr-bug
  • 16888 Views
  • 11 replies
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Latest Reply
Harold
New Contributor II
  • 7 kudos

Please check if this could help or not:spark.databricks.delta.catalog.update.enabled false

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LidorAbo
by New Contributor II
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  • 1 replies
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bucket ownership of s3 bucket in databricks

We had a databricks job that has strange behavior,when we passing 'output_path' to function saveAsTextFile and not output_path variable the data saved to the following path: s3://dev-databricks-hy1-rootbucket/nvirginiaprod/3219117805926709/output_pa...

s3
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Latest Reply
User16752239289
Databricks Employee
  • 1 kudos

I suspect you provided a dbfs path to save the data hence the data saved under your workspace root bucket.For the workspace root bucket, databricks workspace will interact with databricks credential to make sure databricks has access to it and able t...

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qwerty1
by Contributor
  • 2936 Views
  • 1 replies
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Unable to create bloom filter index

I am unable to create bloom filter index on my tableCREATE BLOOMFILTER INDEX ON TABLE my_namespace.foo FOR COLUMNS (id OPTIONS (fpp = 0.1, numItems = 6000000))Gives the errorAnalysisException: Table `spark_catalog`.`my_namespace`.`foo` did not specif...

  • 2936 Views
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Latest Reply
Debayan
Databricks Employee
  • 0 kudos

Hi, You can refer to https://issues.apache.org/jira/browse/SPARK-27617 for the above error. Please let us know if this helps, also please tag @Debayan​ with your next response which will notify me, Thank you!

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gg_047320_gg_94
by New Contributor II
  • 9551 Views
  • 1 replies
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DLT Spark readstream fails on the source table which is overwritten

I am reading the source table which gets updated every day. It is usually append/merge with updates and is occasionally overwritten for other reasons. df = spark.readStream.schema(schema).format("delta").option("ignoreChanges", True).option('starting...

  • 9551 Views
  • 1 replies
  • 1 kudos
Latest Reply
Debayan
Databricks Employee
  • 1 kudos

Hi, Could you please confirm DLT and DBR versions? Also please tag @Debayan​ with your next response which will notify me, Thank you!

  • 1 kudos
eyalo
by New Contributor II
  • 9685 Views
  • 6 replies
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Why the SFTP ingest doesn't work?

Hi, I did the following code but it seems like the cluster is running for a long period of time and then stops without any results. Attached my following code: (I used 'com.springml.spark.sftp' library and install it as Maven)Also i whitelisted my lo...

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Latest Reply
eyalo
New Contributor II
  • 0 kudos

@Debayan Mukherjee​ Hi, I don't know if you got my reply so i am bouncing my message to you again.Thanks.

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Ajay-Pandey
by Databricks MVP
  • 5887 Views
  • 2 replies
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Resolved! Column is accessible after dropping the same column

Hi Today I have seen very Strang behavior of databricks.I have dropped one column from a dataframe and assigned the result to a new dataframe but I am able to use the dropped column in the filter command.In general scenario I should get an error but ...

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Latest Reply
Sandeep
Databricks Employee
  • 3 kudos

@Ajay Pandey​ , this is a known behavior. Please refer this JIRA for details: https://issues.apache.org/jira/browse/SPARK-30421

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