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From: Arun C Murthy <acm@yahoo-inc.com>
Subject: Re: Job API question - ArrayList instead of List?
Date: Wed, 9 Jul 2008 00:08:52 -0700
To: core-dev@hadoop.apache.org
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On Jul 8, 2008, at 3:11 PM, Lukas Vlcek wrote:

> Hi,
>
> Why the Job API is using ArrayList instead of List?
>
> It is used in constructor:
> public Job(JobConf jobConf, ArrayList<Job> dependingJobs)
>
> and one public method:
> public ArrayList<Job> getDependingJobs()
>
> Is there any reason why it is referencing to implementation while  
> it could
> be replaced by interface?
>

Originally an oversight, we did file http://issues.apache.org/jira/ 
browse/HADOOP-2268 but didn't change it to keep it compatible...

Arun