martin_loetzsch

Joined 12 years ago

Karma

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Member since

Aug 22

http://martin-loetzsch.de

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Comment · 3 years ago

I think this summarizes the topic quite well: https://pyfound.blogspot.com/2022/05/the-2022-python-languag...

Comment · 5 years ago

Project A | (Senior) Data Engineer | Lake Bodensee, Austria or Stuttgart, Germany | ONSITE (REMOTE during covid), Full-time | https://www.project-a.com/careers/data-engineer-mfd-49896240...

Work where others make vacation on building a modern green-field data infrastructure with Open Source technologies. Python, PostgreSQL, BigQuery as Data Lake, Kinesis for CDC / event streaming.

Comment · 6 years ago

(Original author here) That setup is of course an option. The point of the article is to not have javascript pixels in the website for tracking, and it's easy to have server side-tracking. So anything that's not based on web browser based tracking is fine.

Comment · 8 years ago

Also weird: it's the name of a giant ugly guinea pig: https://en.wikipedia.org/wiki/Mara_(mammal)

Comment · 8 years ago

GNU Make is indeed the least verbose/ boilerplate-heavy tool and I use it for a lot of things.

The problem with Make is lacking acceptance amongst younger programmers who always want to work with the latest technologies.

Comment · 8 years ago

(author here)

Currently there is a hard dependency to Postgres for the bookkeeping tables of mara. I'm working on dockerizing the example project to make the setup easier.

For ETL, Mysql, Postgres & SQL Server are supported (and it's easy to add more).

Comment · 8 years ago

For example the PyPI download stats pipeline is here: https://github.com/mara/mara-example-project/tree/master/app...

The __init__.py contains the pipeline, and the rest is the SQL files that do the transformations

Comment · 8 years ago

(author here)

The mara example project [1] does exactly that. It combines PuPI download stats with Github repo activity data.

[1] https://github.com/mara/mara-example-project

Comment · 8 years ago

(author here)

It intentionally doesn't have a scheduler, just definition and parallel execution of pipelines. For scheduling, use Jenkins, cron or Airflow.

Currently you can get notifications for failed runs in slack. Alerting itself is not really in the scope of this project, but it should be easy to implement in a project.

Comment · 8 years ago

(author here)

That's absolutely correct. Mara uses Python's multiprocessing [1] to parallelize pipeline execution [2] on a single node so it doesn't need a distributed task queue. Beyond that (and visualization) it can't do much. In fact it doesn't even have a scheduler (you can use jenkins or cron for that).

[1] https://docs.python.org/3.6/library/multiprocessing.html

[2] https://github.com/mara/data-integration/blob/master/data_in...

Comment · 8 years ago

(author here)

Connection information is configured in code through [1], see [2] for an example.

It's very easy to run other workloads. Either by directly invoking Python functions from tasks or by writing own commands (operators)[3].

There is a command line. It's the interface for running from external schedulers (jenkins, cron)[4] & [5]

[1] https://github.com/mara/mara-db

[2] https://github.com/mara/mara-example-project/blob/master/app...

[3] https://github.com/mara/data-integration/blob/master/data_in...

[4] https://github.com/mara/data-integration/raw/master/docs/exa...

[5] https://github.com/mara/data-integration/raw/master/docs/exa...

Comment · 8 years ago

(author here).

Mara data integration is indeed a glorified version of Make (with cost based scheduling and lots of visualizations)

Comment · 12 years ago

Yes. If you want to have bing aerial images next to google satellite imagery, use this app to display bing maps in google earth: http://ge-map-overlays.appspot.com/bing-maps/aerial