- 10299 Views
- 4 replies
- 6 kudos
Resolved! Save to parquet with fixed size
I have a large dataframe (>1TB) I have to save in parquet format (not delta for this use case). When I save the dataframe using .format("parquet") it results in several parquet files. I want these files to be a specific size (ie not larger than 500Mb...
- 10299 Views
- 4 replies
- 6 kudos
- 6 kudos
In addition to the solutions provided above, we can also control the behavior by specifying maximum records per file if we have a rough estimate of how many records should be written to a file to reach 500 MB size.df.write.option("maxRecordsPerFile",...
- 6 kudos
- 9568 Views
- 5 replies
- 0 kudos
AnalysisException : when attempting to save a spark DataFrame as delta table
I get an, `AnalysisException Failed to merge incompatible data types LongType and StringTypewhen attempting to run the below command, `df.write.format("delta").saveAsTable("schema.k_adhoc.df", mode="overwrite")` I am casting the column before saving:...
- 9568 Views
- 5 replies
- 0 kudos
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The issue seems to be because the job is trying to merge columns with different schema. Could you please make sure that the schema matches for the columns.
- 0 kudos
- 16696 Views
- 5 replies
- 7 kudos
Resolved! Window function using last/last_value with PARTITION BY/ORDER BY has unexpected results
Hi, I'm wondering if this is the expected behavior when using last or last_value in a window function? I've written a query like this:select col1, col2, last_value(col2) over (partition by col1 order by col2) as column2_last from values ...
- 16696 Views
- 5 replies
- 7 kudos
- 7 kudos
For those stumbling across this; it seems LAST_VALUE emulates the same functionality as it does in SQL Server which does not, in most people's minds, have a proper row/range frame for the window. You can adjust it with the below syntax.I understand l...
- 7 kudos
- 923 Views
- 0 replies
- 0 kudos
Connect File Arrival Trigger to on-prem file server
Hello everyone!I was wondering if there is any way to connect File Arrival Trigger to an on-prem file server. Can I use JDBC or ODBC? will those connect to an on-prem file server (not a SQL server)Thank you
- 923 Views
- 0 replies
- 0 kudos
- 11452 Views
- 6 replies
- 3 kudos
Resolved! Is there a way to run a single or selected lines in a notebook?
Assume we have a given cellprint('A') print('B') print('C')I want to run only the below line.print('B')Obviously, I can seperate the cell into three and run the one I want, but this is timely. This is a feature I use so often (e.g. in pycharm) and wo...
- 11452 Views
- 6 replies
- 3 kudos
- 3 kudos
@Volkan_Gumuskay This is also available as an option in the notebook run options.
- 3 kudos
- 4407 Views
- 2 replies
- 3 kudos
Row_Num function in spark-sql
I have a doubt row_num with order by in spark-sql gives different result(non-deterministic output) every time i execute it?​It's due to parallelism in spark ?​​Any approach how to takle it?​I order by with a date column and a integer column and take...
- 4407 Views
- 2 replies
- 3 kudos
- 3 kudos
@Hemant If the order by clause provided yields a unique result, then we would get deterministic output. For ex:If we create a rowID for this dataset, with CustomerID used in OrderBy clause, then depending upon the runtime, we may get non-deterministi...
- 3 kudos
- 12313 Views
- 3 replies
- 0 kudos
Resolved! Merge Schema Error Message despite setting option to true
Has anyone come across this error before:```A schema mismatch detected when writing to the Delta table (Table ID: d4b9c839-af0b-4b62-aab5-1072d3a0fa9d). To enable schema migration using DataFrameWriter or DataStreamWriter, please set: '.option("merge...
- 12313 Views
- 3 replies
- 0 kudos
- 0 kudos
Hi @alexiswl Share the wisdom! By marking the best answers, you help others in our community find valuable information quickly and efficiently. Thanks!
- 0 kudos
- 2658 Views
- 2 replies
- 0 kudos
- 2658 Views
- 2 replies
- 0 kudos
- 0 kudos
Hi @Yogybricks Hope you are well. Just wanted to see if you were able to find an answer to your question and would you like to mark an answer as best? It would be really helpful for the other members too. Cheers!
- 0 kudos
- 4538 Views
- 2 replies
- 0 kudos
Resolved! Trigger file_arrival of job on Delta Lake table change
Is there a way to avoid having to create an external data location Simply to trigger a job when new data comes to a specific Delta Lake table?
- 4538 Views
- 2 replies
- 0 kudos
- 0 kudos
Hi @zsucic1 Hope you are well. Just wanted to see if you were able to find an answer to your question and would you like to mark an answer as best? It would be really helpful for the other members too. Cheers!
- 0 kudos
- 5095 Views
- 3 replies
- 0 kudos
Not able to execute below SQL query in databricks notebook because of Pare error
Hi Team,I am unable to run the below command and it is giving me a parse error. Can any one point out the issue with the code:
- 5095 Views
- 3 replies
- 0 kudos
- 0 kudos
Hi,From the error , it looks like there is no space between the brackets and the "in" keyword after the where clause. Can you please try again see if you facing the same error.
- 0 kudos
- 3032 Views
- 2 replies
- 1 kudos
Consume gold data layer from web application
Hello!We are developing a web application in .NET, we need to consume data in gold layer, (as if we had a relational database), how can we do it? export data to sql server from gold layer?
- 3032 Views
- 2 replies
- 1 kudos
- 1 kudos
Hi @apiury 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 your ...
- 1 kudos
- 28600 Views
- 12 replies
- 0 kudos
How can I split a Spark Dataframe into n equal Dataframes (by rows)? I tried to add a Row ID column to acheive this but was unsuccessful.
I have a dataframe that has 5M rows. I need to split it up into 5 dataframes of ~1M rows each. This would be easy if I could create a column that contains Row ID. Is that possible?
- 28600 Views
- 12 replies
- 0 kudos
- 0 kudos
Hi @NithinTiruveedh 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 answ...
- 0 kudos
- 1119 Views
- 0 replies
- 0 kudos
Higher Order Function: AGGREGATE not working in the example notebook mentioned in Documentation
Hi All,I am running a sample notebook from Databricks Documentation section on Higher Order Function on my community edition. I am running this notebook on DBR 12.2 LTS.Databricks Documentation URL : https://docs.databricks.com/optimizations/higher-o...
- 1119 Views
- 0 replies
- 0 kudos
- 2710 Views
- 2 replies
- 3 kudos
Databricks streaming dataframe into Snowflake
Any suggestions on how to stream data from databricks into snowflake?. Is snowpipe is the only option?. Snowpipe is not faster since it runs copy into in a small batch intervals and not in few seconds. If no option other than snowpipe, how to call it...
- 2710 Views
- 2 replies
- 3 kudos
- 3 kudos
Hi @Anonymous 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...
- 3 kudos
- 8229 Views
- 10 replies
- 7 kudos
DLT optimize and vacuum
We were finally able to get DLT pipelines to run the optimize and vacuum automatically. We verified this via the the table history. However I am able to still query versions older than 7 days. Has anyone been experiencing this and how were you a...
- 8229 Views
- 10 replies
- 7 kudos
- 7 kudos
Hi @Gil Hope all is well! Just wanted to check in if you were able to resolve your issue and would you be happy to share the solution or mark an answer as best? Else please let us know if you need more help. We'd love to hear from you. Thanks!
- 7 kudos
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