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Posted to commits@airflow.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2017/02/12 21:07:42 UTC
[jira] [Commented] (AIRFLOW-862) Add DaskExecutor
[ https://issues.apache.org/jira/browse/AIRFLOW-862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15862977#comment-15862977 ]
ASF subversion and git services commented on AIRFLOW-862:
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Commit 6e2210278235d42bbc3a60e1e14bbf0f9127b54f in incubator-airflow's branch refs/heads/master from [~jlowin]
[ https://git-wip-us.apache.org/repos/asf?p=incubator-airflow.git;h=6e22102 ]
[AIRFLOW-862] Add DaskExecutor
Adds a DaskExecutor for running Airflow tasks
in Dask clusters.
Closes #2067 from jlowin/dask-executor
> Add DaskExecutor
> ----------------
>
> Key: AIRFLOW-862
> URL: https://issues.apache.org/jira/browse/AIRFLOW-862
> Project: Apache Airflow
> Issue Type: New Feature
> Components: executor
> Reporter: Jeremiah Lowin
> Assignee: Jeremiah Lowin
> Fix For: 1.8.1
>
>
> The Dask Distributed sub-project makes it very easy to create pure-python clusters of Dask workers ranging from a personal laptop to thousands of networked cores. The workers can execute arbitrary functions submitted to the Dask scheduler node. A full Dask app would involve multiple tasks with data-dependencies (similar in philosophy to an Airflow DAG) but it will happily run single functions as well.
> The DaskExecutor is configured by supplying the IP address of the Dask Scheduler. It submits Airflow commands to the cluster for execution (note: the cluster should have access to any Airflow dependencies, including Airflow itself!) and checks the resulting futures to see if the tasks completed successfully.
> Some advantages of using Dask for parallel execution over LocalExecutor or CeleryExecutor are:
> - simple scaling, from local machines to remote clusters
> - pure python implementation (minimal dependencies and no need to run additional databases)
> - built in live-updating web UI for monitoring the cluster
>
> ** Note: This does NOT replace the Airflow scheduler or DAG engine with the analogous Dask versions; it just uses the Dask cluster to run Airflow tasks.
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