Out of Memory during GWT compile

While analyzing with Eclipse Memory Analyzer(MAT), it was found that around 860MB of memory is taken by HashMap.Entry and HashMap.Entry[]. There are 1.3 million instances of HashMap.Entry objects created. See image below.

These HashMap Entries typically have keys as (com.google.gwt.dev.jjs.ast.JMethod, com.google.gwt.dev.jjs.ast.JField, com.google.gwt.dev.jjs.ast.JParameter etc.) and the value is typically an instance of java.lang.Object.

These maps are referenced from the PermutationWorker Thread.

Why are so many instances on HashMap Entries created ? Is this a an existing bug or do we need to specify any flag during the GWT compile to get around this problem?Thanks,Ranjith

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