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from satisfaction survey: Completely turn-off downloads of maven indexes (or reduce the memory footprint for HUGE indexes; our company repo is huge and not under my control and NetBeans keeps wanting to process that index and 4G is not enough).
Related to https://netbeans.org/bugzilla/show_bug.cgi?id=232687 ?
http://hg.netbeans.org/core-main/rev/5d3da424ea29 new Tools/Options Java/maven/Indexing option to turn off the indexing entirely. Existing indexes are used but no new ones are scanned/downloaded unless explicitly triggered from the Services/Maven repositories repository nodes.