Very large notifications can cause OOMEs

2015-07-24 00:35:17,952 ERROR [catalina-exec-33] [common.error.jersey.ThrowableExceptionMapper] toResponse Uncaught exception thrown by REST service: Java heap space
 -- url: /rest/mywork/1/notification | userName: <REDACTED>
java.lang.OutOfMemoryError: Java heap space
	at org.apache.xerces.dom.CharacterDataImpl.appendData(Unknown Source)
	at org.cyberneko.html.parsers.DOMFragmentParser.characters(DOMFragmentParser.java:465)
	at org.cyberneko.html.HTMLTagBalancer.characters(HTMLTagBalancer.java:798)
	at com.atlassian.xhtml.parsing.BlockIsolatingTagBalancer.characters(BlockIsolatingTagBalancer.java:171)
	at org.cyberneko.html.filters.DefaultFilter.characters(DefaultFilter.java:156)
	at org.cyberneko.html.HTMLScanner$ContentScanner.scanCharacters(HTMLScanner.java:2059)
	at org.cyberneko.html.HTMLScanner$ContentScanner.scan(HTMLScanner.java:1910)
	at org.cyberneko.html.HTMLScanner.scanDocument(HTMLScanner.java:877)
	at org.cyberneko.html.HTMLConfiguration.parse(HTMLConfiguration.java:495)
	at org.cyberneko.html.HTMLConfiguration.parse(HTMLConfiguration.java:448)
	at org.cyberneko.html.parsers.DOMFragmentParser.parse(DOMFragmentParser.java:166)
	at org.owasp.validator.html.scan.AntiSamyDOMScanner.scan(AntiSamyDOMScanner.java:172)
	at org.owasp.validator.html.AntiSamy.scan(AntiSamy.java:113)
	at org.owasp.validator.html.AntiSamy.scan(AntiSamy.java:92)
	at com.atlassian.mywork.host.service.HTMLServiceImpl.clean(HTMLServiceImpl.java:28)
	at com.atlassian.mywork.host.service.LocalNotificationServiceImpl.createOrUpdate(LocalNotificationServiceImpl.java:164)