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https://issues.apache.org/jira/browse/HADOOP-10085?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13815013#comment-13815013
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Karthik Kambatla commented on HADOOP-10085:
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There is some discussion on YARN-1374.
While it may be useful to allow adding services during init, we should do it in
a way we don't introduce any races or non-determinism. It might make more sense
to have a method different from the typical addService() to add a service
during init.
> CompositeService should allow adding services while being inited
> ----------------------------------------------------------------
>
> Key: HADOOP-10085
> URL: https://issues.apache.org/jira/browse/HADOOP-10085
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 2.2.0
> Reporter: Karthik Kambatla
>
> We can add services to a CompositeService. However, if we do that while
> initing the CompositeService, it leads to a ConcurrentModificationException.
> It would be nice to allow adding services even during the init of
> CompositeService.
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