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Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8142300	emb-9	Hannes Wallnoefer	P3	Resolved	Fixed	team
JDK-8141009	8u91	Hannes Wallnoefer	P3	Resolved	Fixed	b01
JDK-8138818	8u72	Hannes Wallnoefer	P3	Resolved	Fixed	b01
JDK-8147378	emb-8u91	Hannes Wallnoefer	P3	Resolved	Fixed	b01

Parsing JSON with lots of large numeric keys can throw an OOM.

http://stackoverflow.com/questions/32787100/nashorn-json-parse-java-lang-outofmemoryerror-java-heap-space-jdk8u60

The problem is that we don' switch to sparse array data soon enough. The current threshold (defined in SparseArrayData.MAX_DENSE_LENGTH) is 8 * 1024 * 1024.

backported by

JDK-8138818 OutOfMemoryError with large numeric keys in JSON.parse

JDK-8141009 OutOfMemoryError with large numeric keys in JSON.parse

JDK-8142300 OutOfMemoryError with large numeric keys in JSON.parse

JDK-8147378 OutOfMemoryError with large numeric keys in JSON.parse