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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

thushar
by Contributor
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Delta file partitions

Have one function to create files with partitions, in that the partitions are created based on metadata (getPartitionColumns) that we are keeping. In a table we have two columns that are mentioned as partition columns, say 'Team' and 'Speciality'. Wh...

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Anonymous
Not applicable
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Hi @Thushar R​ Hope everything is going great.Just wanted to check in if you were able to resolve your issue. If yes, would you be happy to mark an answer as best so that other members can find the solution more quickly? If not, please tell us so we ...

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mayuri18kadam
by New Contributor II
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Resolved! com.databricks.sql.io.FileReadException Caused by: com.microsoft.azure.storage.StorageException: Blob hash mismatch

Hi, I am getting the following error:com.databricks.sql.io.FileReadException: Error while reading file wasbs:REDACTED_LOCAL_PART@blobStorageName.blob.core.windows.net/cook/processYear=2021/processMonth=12/processDay=30/processHour=18/part-00003-tid-4...

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mayuri18kadam
New Contributor II
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yes, I can read from notebook with DBR 6.4, when I specify this path: wasbs:REDACTED_LOCAL_PART@blobStorageName.blob.core.windows.net/cook/processYear=2021/processMonth=12/processDay=30/processHour=18but the same using DBR 6.4 from spark-submit, it f...

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MiguelKulisic
by New Contributor II
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Resolved! ProtocolChangedException on concurrent blind appends to delta table

Hello, I am developing an application that runs multiple processes that write their results to a common delta table as blind appends. According to the docs I've read online: https://docs.databricks.com/delta/concurrency-control.html#protocolchangedex...

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-werners-
Esteemed Contributor III
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I think you are right, the mergeSchema will change the schema of the table, but if you both write to that same table with another schema, which one will it be?Can you check if both of you actually write the same schema, or remove the mergeschema?

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