- 10532 Views
- 4 replies
- 2 kudos
Sync the production data in environment into test environment
Hello,I have a database called sales which contain several delta tables and views in both production and test workspace. But the data is not synced because some people develop the code in test workspace. As time passed, both the data and the tables i...
- 10532 Views
- 4 replies
- 2 kudos
- 2 kudos
Hi @zyang 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 can...
- 2 kudos
- 4319 Views
- 2 replies
- 2 kudos
Resolved! Confirmation that Ingestion Time Clustering is applied
The article on Ingestion Time Clustering mentions that "Ingestion Time Clustering is enabled by default on Databricks Runtime 11.2", however how can I confirm is it active for my table? For example, is there a:True/False "Ingestion Time Clustered" fl...
- 4319 Views
- 2 replies
- 2 kudos
- 2 kudos
Thanks @NandiniN, that was very helpful. I have 3 follow-up questions:If I already have a table (350GB) that has been partitioned by 3 columns: Year, Month, Day, and stored in the hive-style with subdirectories: Year=X/Month=Y/Day=Z, can I read it in...
- 2 kudos
- 10087 Views
- 3 replies
- 6 kudos
Resolved! What is the alternative for sys.exit(0) in Databricks
Hi,We are working on a migration project from Cloudera to Databricks.All our code is in .py files and we decided to keep the same in Databricks as well and try to execute the same from GIT through Databricks workflows.We have two kinds of exit functi...
- 10087 Views
- 3 replies
- 6 kudos
- 6 kudos
I tested with different levels of nesting and it is working as expected.Here is the sample code: import sys bucket_name = "prod"# str(sys.argv[1]).lower() def main(): i,j=0,0 while j<=2: print(f"while loop iteration: {j}") f...
- 6 kudos
- 3557 Views
- 1 replies
- 1 kudos
Resolved! Photon and UDF efficiency
When using a JVM engine, Scala UDFs have an advantage over Python UDFs because data doesn't have to be shifted out to the Python environment for processing. If I understand the implications of using the Photon C++ engine, any processing that needs to...
- 3557 Views
- 1 replies
- 1 kudos
- 1 kudos
Photon does not support UDFs:https://learn.microsoft.com/en-us/azure/databricks/runtime/photon#limitationsSo when creating a UDF, photon will not be used.
- 1 kudos
- 1107 Views
- 0 replies
- 0 kudos
Structured Streaming and Workplace Max Jobs
From the documentation: A workspace is limited to 1000 concurrent task runs. A 429 Too Many Requests response is returned when you request a run that cannot start immediately.The number of jobs a workspace can create in an hour is limited to 10000 (i...
- 1107 Views
- 0 replies
- 0 kudos
- 1798 Views
- 2 replies
- 0 kudos
Plot number of abandoned cart items by product
abandoned_carts_df = (email_carts_df.filter(col('converted') == False).filter(col('cart').isNotNull()))display(abandoned_carts_df) abandoned_items_df = (abandoned_carts_df.select(col("cart").alias("items")).groupBy("items").count())display(abandoned_...
- 1798 Views
- 2 replies
- 0 kudos
- 0 kudos
Hi @SSV_dataeng ,Try abandoned_items_df = (abandoned_carts_df.withColumn("items", explode("cart")).groupBy("items").count().sort("items"))
- 0 kudos
- 2760 Views
- 4 replies
- 0 kudos
write to Delta
spark.conf.set("spark.databricks.delta.properties.defaults.columnMapping.mode","name")products_output_path = DA.paths.working_dir + "/delta/products"products_df.write.format("delta").save(products_output_path) verify_files = dbutils.fs.ls(products_ou...
- 2760 Views
- 4 replies
- 0 kudos
- 0 kudos
Hi @SSV_dataeng ,Please check with this (you would have to indent it correctly for python)productsOutputPath = DA.workingDir + "/delta/products"(productsDF.write.format("delta").mode("overwrite").save(productsOutputPath))verify_files = dbutils.fs.ls(...
- 0 kudos
- 7196 Views
- 3 replies
- 1 kudos
Can I change Service Principal's OAuth token's expiration date?
Hi,since I have to read from a Databricks table from an external API I created a Service Principal that would start a cluster and perform the operation, to authenticate the request on behalf of the Service Principal I generate the OAuth token followi...
- 7196 Views
- 3 replies
- 1 kudos
- 1 kudos
Hello @marchino Please check if this is of your interest https://kb.databricks.com/en_US/security/set-an-unlimited-lifetime-for-service-principal-access-token
- 1 kudos
- 1481 Views
- 1 replies
- 0 kudos
Reserved VM/DBU's
As Some VM's /DBU's reservations are purchased, however, it was underutilized. How can we optimize the underutilization? Do we have any guidelines or best practices?
- 1481 Views
- 1 replies
- 0 kudos
- 0 kudos
We have 5 reserved instances of Azure VMs to run the data bricks cluster jobs. And this is not being utilized efficiently (as per the usage metrics – 1 of the reservation is 10-15% utilized and the other one is 30-40% utilized). Could you please help...
- 0 kudos
- 4421 Views
- 2 replies
- 1 kudos
Data lineage on views
I do not know if this is intended behavior of data lineage but for me it is weird.When I create a view based on two tables the data lineage upstream looks correct. But when I replace the view to only use one of the tables, then data lineage upstream ...
- 4421 Views
- 2 replies
- 1 kudos
- 1 kudos
After some thoughts, i have come to this conclusion:Data lineage on views is working as one should expect. I strongly recommend that this feature is redesigned so it shows the result of the lastest view.
- 1 kudos
- 5051 Views
- 3 replies
- 0 kudos
Unable to Start Clusters on GCP - Clusters Stuck in "CREATING" State
I set up my Databricks Account on GCP via GCP Marketplace and then created my first workspace via the Accounts Console (default Databricks VPC). Everything seemed to be ok until I attempted to create my first cluster. The cluster hangs indefinitely i...
- 5051 Views
- 3 replies
- 0 kudos
- 0 kudos
Hi @etlundquist 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 ...
- 0 kudos
- 1662 Views
- 0 replies
- 0 kudos
Not able to login or change password
Hi,I am unable to login to databricks community edition. I have tried changing my password. However, no email is sent on my email id which is : kum.nit7287@gmail.com. Can anyone help?
- 1662 Views
- 0 replies
- 0 kudos
- 7882 Views
- 3 replies
- 0 kudos
Iterative read and writes cause java.lang.OutOfMemoryError: GC overhead limit exceeded
I have an iterative algorithm which read and writes a dataframe iteration trough a list with new partitions, like this: for p in partitions_list:df = spark.read.parquet("adls_storage/p")df.write.format("delta").mode("overwrite").option("partitionOver...
- 7882 Views
- 3 replies
- 0 kudos
- 0 kudos
@daniel_sahalI've attached the wrong snip/ Actually it is FULL GC Ergonomics, which was bothering me. Now I am attaching the correct snip. But as you said I scaled a bit. The thing I forgot to mention is that the table is wide - more than 300 column...
- 0 kudos
- 4574 Views
- 1 replies
- 3 kudos
Resolved! Using DeltaTable.merge() and generating surrogate keys on insert?
I'm using merge to upsert data into a table:DeltaTable.forName(DESTINATION_TABLE).as("target").merge(merge_df.as("source") ,"source.topic = target.topic and source.key = target.key").whenMatched().updateAll().whenNotMatched().insertAll().execute()Id ...
- 4574 Views
- 1 replies
- 3 kudos
- 3 kudos
@Dekova 1) uuid() is non-deterministic meaning that it will give you different result each time you run this function2) Per the documentation "For Databricks Runtime 9.1 and above, MERGE operations support generated columns when you set spark.databri...
- 3 kudos
- 3830 Views
- 3 replies
- 2 kudos
Databricks SQL - Conditional Catalog query
Hi is there a way we can do%sqlselect * from {{ catalog }}.schema.tableWhere `{{ catalog }}` is a template variable extracted/evaluated from either an environment variable, a databricks secret, or somewhere else? (note: not a widget)
- 3830 Views
- 3 replies
- 2 kudos
- 2 kudos
Hi @102842 You can use query parameters to perform this - https://docs.databricks.com/sql/user/queries/query-parameters.htmlYou can define the catalog name as a query parameter. You should declare the catalog name parameter as a drop down list, becau...
- 2 kudos
