[WICKET-4113] Whole response is cached in memory

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Incomplete
• Affects Version/s: 1.4.18
• Component/s: wicket
• Assignee: Unassigned
• Reporter: Adam Pierzchała
• Created: 07/Oct/11 07:41
• Updated: 30/Jan/12 10:47
• Resolved: 30/Jan/12 10:47

Description

In class org.apache.wicket.protocol.http.portlet.WicketResponseState there is used CharArrayWriterBuffer and ByteArrayOutputStream to cache in memory whole response.

This creates issues with Java heap space when downloading big files:

Caused by: java.lang.OutOfMemoryError: Java heap space
	at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:70)
	at org.apache.wicket.protocol.http.portlet.WicketResponseState$1.write(WicketResponseState.java:439)
	at java.io.OutputStream.write(OutputStream.java:99)

I think there should be used stream implementation that caches big data amounts on disk e.g. org.apache.cxf.io.CachedOutputStream