- 9884 Views
- 8 replies
- 9 kudos
Slow performance of VACUUM on Azure Data Lake Store Gen2
We need to run VACCUM on one of our biggest tables to free the storage. According to our analysis using VACUUM bigtable DRY RUN this affects 30M+ files that need to be deleted.If we run the final VACUUM, the file-listing takes up to 2h (which is OK) ...
- 9884 Views
- 8 replies
- 9 kudos
- 9 kudos
@Gerhard Brueckl​ we have seen near 80k-120k file deletions in Azure per hour while doing a VACUUM on delta tables, it's just that the vacuum is slower in azure and S3. It might take some time as you said when deleting the files from the delta path. ...
- 9 kudos
- 14039 Views
- 6 replies
- 2 kudos
Run more than nr-of-cores concurrent tasks.
We are using the terraform databricks provier, which is starting a cluster and checking every mount (since there is no mount rest API!). Each mount takes 20 seconds to check, and 99.9% of that time is idle waiting, and it starts a job per mount. If w...
- 14039 Views
- 6 replies
- 2 kudos
- 2 kudos
hi @Erik Parmann​ ,It is possible to do, but you might need to also enable dynamic allocation at the cluster level to be able to make sure your settings are apply at cluster creation . You can find more details here. As best practice, we do not recom...
- 2 kudos
- 20162 Views
- 3 replies
- 5 kudos
How can I use custom python library in Azure Databricks?
I am trying to access functions in my coreapi.py by importing in the main notebook, but I have error ModuleNotFoundError: No module named 'coreapi'. I tried by uploading the file into the same folder and I tried creating a python egg and uploading it...
- 20162 Views
- 3 replies
- 5 kudos
- 5 kudos
There is also the possibility to use Repos file functionality:https://databricks.com/blog/2021/10/07/databricks-repos-is-now-generally-available.html
- 5 kudos
- 2049 Views
- 0 replies
- 0 kudos
apt-get install texlive error 404
Hi everybody, I'm trying to install on a cluster (Azure Databricks, DBR 7.3LTS) texlive-full using apt-get install texlive-full in an init script.The issue is that, most of the times (not always), I get a 404 when downloading packages from security.u...
- 2049 Views
- 0 replies
- 0 kudos
- 19813 Views
- 9 replies
- 7 kudos
Resolved! Delete row from table is not working.
I have created External table using spark via below command. (Using Data science & Engineering)df.write.mode("overwrite").format("parquet").saveAsTable(name=f'{db_name}.{table_name}', path="dbfs:/reports/testing")I have tried to delete a row based on...
- 19813 Views
- 9 replies
- 7 kudos
- 7 kudos
hi @karthick J​ ,Can you try to delete the row and execute your command in a non high concurrency cluster? the reason why im asking this is because we first need to isolate the error message and undertand why is happening to be able to find the best ...
- 7 kudos
- 1716 Views
- 0 replies
- 5 kudos
Never miss a beat! Stay up to date with all Databricks news, including product updates, and helpful product tips by signing up for our monthly newslet...
Never miss a beat! Stay up to date with all Databricks news, including product updates, and helpful product tips by signing up for our monthly newsletter.Note: Newsletter is currently available to only AWS & GCP customers.
- 1716 Views
- 0 replies
- 5 kudos
- 1746 Views
- 0 replies
- 5 kudos
Learn the basics with these resources: Register for an AWS Onboarding Webinar or an Azure Quickstart Lab- Learn the fundamentals from a Customer Succe...
Learn the basics with these resources: Register for an AWS Onboarding Webinar or an Azure Quickstart Lab- Learn the fundamentals from a Customer Success Engineer & get all your onboarding questions answered live.Started using Databricks, but have que...
- 1746 Views
- 0 replies
- 5 kudos
- 1711 Views
- 0 replies
- 6 kudos
Welcome to Databricks! Here you will find resources for a successful onboarding experience. In this group you can ask quick questions and have them an...
Welcome to Databricks! Here you will find resources for a successful onboarding experience. In this group you can ask quick questions and have them answered by experts to unblock and accelerate your ramp up with Databricks.
- 1711 Views
- 0 replies
- 6 kudos
- 4377 Views
- 3 replies
- 0 kudos
Display, count and write commands stuck after 1st job
Hi, I have problems with displaying and saving a table in Databricks. Simple command can run for hours without any progress..Before that I am not doing any rocket science - code runs in less than a minute, I have one join at the end. I am using 7.3 ...
- 4377 Views
- 3 replies
- 0 kudos
- 0 kudos
hi @Just Magy​ ,what is your data source? what type of lazy transformation and actions do you have in your code? Do you partition your data? Please provide more details.
- 0 kudos
- 10046 Views
- 2 replies
- 0 kudos
AttributeError: 'NoneType' object has no attribute 'repartition'
I am using a framework and i have a query where i am doing,df = seg_df.select(*).write.option("compression", "gzip') and i am getting below error,When i don't do the write.option i am not getting below error. Why is it giving me repartition error. Wh...
- 10046 Views
- 2 replies
- 0 kudos
- 0 kudos
hi @AMIT GADHAVI​ ,could you provide more details? for example, what is your data source? how do you repartition? etc
- 0 kudos
- 7673 Views
- 7 replies
- 7 kudos
Resolved! Multi-task Jobs orchestration - simulating onComplete status
Currently, we are investigating how to effectively incorporate databricks latest feature for orchestration of tasks - Multi-task Jobs.The default behaviour is that a downstream task would not be executed if the previous one has failed for some reason...
- 7673 Views
- 7 replies
- 7 kudos
- 7 kudos
Hi @Stefan V​ ,My name is Jan and I'm a product manager working on job orchestration. Thank you for your question. At the moment this is not something directly supported yet, this is however on our radar. If you are interested in having a short conve...
- 7 kudos
- 7600 Views
- 3 replies
- 2 kudos
Resolved! Unable to open files with python, but filesystem shows files exist
Dear community,I have the following problem:%fs mv '/FileStore/Tree_point_classification-1.dlpk' '/dbfs/mnt/group22/Tree_point_classification-1.dlpk'I have uploaded a file of a ML-model and have transferred it to the directory with When I now check ...
- 7600 Views
- 3 replies
- 2 kudos
- 2 kudos
There is dbfs:/dbfs/ displayed maybe file is in /dbfs/dbfs directory? Please check it and try to open with open('/dbfs/dbfs. You can also use "data" from left menu to check what is in dbfs file system more easily.
- 2 kudos
- 4452 Views
- 2 replies
- 1 kudos
Resolved! Accessing confluent schema registry from databricks with scala fails with 401 (just for scala, not python, just in databricks)
Nore, I've tested with the same connection variable:locally with scala - works (via the same prod schema registry)in the cluster with python - worksin the cluster with scala - fails with 401 auth errordef setupSchemaRegistry(schemaRegistryUrl: String...
- 4452 Views
- 2 replies
- 1 kudos
- 1 kudos
Found the issue: it's the uber package mangling some dependency resolving, which I fixedAnother issue, is that currently you can't use 6.* branch of confluent schema registry client in databricks, because the avro version is different then the one su...
- 1 kudos
- 26851 Views
- 5 replies
- 5 kudos
Resolved! Databricks default python libraries list & version
We are using data-bricks. How do we know the default libraries installed in the databricks & what versions are being installed. I have ran pip list, but couldn't find the pyspark in the returned list.
- 26851 Views
- 5 replies
- 5 kudos
- 5 kudos
Hi @karthick J​ ,If you would like to see all the libraries installed in your cluster and the version, then I will recommend to check the "Environment" tab. In there you will be able to find all the libraries installed in your cluster.Please follow t...
- 5 kudos
- 9791 Views
- 6 replies
- 7 kudos
Databricks query performance when filtering on a column correlated to the partition-column
(This is a copy of a question I asked on stackoverflow here, but maybe this community is a better fit for the question):Setting: Delta-lake, Databricks SQL compute used by powerbi. I am wondering about the following scenario: We have a column `timest...
- 9791 Views
- 6 replies
- 7 kudos
- 7 kudos
In query I would just query first by date (generated from timestamp which we want to query) and than by exact timestamp, so it will use partitioning benefit.
- 7 kudos
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