apache / apache/beam

Support executing MapReduce jobs in parallel.

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mapreduce new feature P3 runners
Dominant language
Java
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Description

Currently, the runner executes MR jobs sequentially with the topological order. This is very inefficient, it will be good to allow jobs to be executed in parallel if they don't depend on either other.

Imported from Jira [BEAM-2835](https://issues.apache.org/jira/browse/BEAM-2835). Original Jira may contain additional context.
Reported by: peihe0@gmail.com.

Contributor guide

Open the contributing guide

Research direction

Start by reviewing the runner behavior described in the issue and the original Jira item BEAM-2835, which may contain additional context. Identify how jobs are currently followed in topological order and define completion as allowing independent MapReduce jobs to execute concurrently without violating dependencies.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
data-engineering, distributed-systems
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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