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CloudStack is a big project and it requires more memory for Eclipse. Here's how to give it more memory.
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What this does is to tell Eclipse that the sub-directories under parent projects should not be included in the resource list, thus avoiding the the duplicate resources in the Open Resource dialogue box. If the parent project does have a directory that you want, then you can add that to a include filter. Note that you can not use * as the folders because that would exclude the .settings folder which eclipse uses to keep its metadata and will cause the m2e plugin to have problems.
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