Document create reads content into memory

(from https://issues.alfresco.com/jira/browse/ALF-11565)
Steps to reproduce:
1. Connect to Alfresco through CMIS Workbench 0.5.0;
2. Click Create document;
3. Select Document (cmis:document) as type;
4. Attach file larger than VM memory size (alfresco installer was user as content stream ~500MB);
5. Click create document;

Actual result:
Error occurs

Caused by: java.lang.OutOfMemoryError: Java heap space
at org.apache.chemistry.opencmis.server.impl.atompub.AtomEntryParser$LightByteArrayOutputStream.expand(AtomEntryParser.java:590)
at org.apache.chemistry.opencmis.server.impl.atompub.AtomEntryParser$LightByteArrayOutputStream.write(AtomEntryParser.java:610)
at org.apache.chemistry.opencmis.commons.impl.Base64$OutputStream.write(Base64.java:1963)
at org.apache.chemistry.opencmis.commons.impl.Base64$OutputStream.write(Base64.java:1994)
at java.io.FilterOutputStream.write(FilterOutputStream.java:80)
at org.apache.chemistry.opencmis.server.impl.atompub.AtomEntryParser.readBase64(AtomEntryParser.java:392)
at org.apache.chemistry.opencmis.server.impl.atompub.AtomEntryParser.parseCmisContent(AtomEntryParser.java:324)
at org.apache.chemistry.opencmis.server.impl.atompub.AtomEntryParser.parseEntry(AtomEntryParser.java:217)
at org.apache.chemistry.opencmis.server.impl.atompub.AtomEntryParser.parse(AtomEntryParser.java:184)
at org.apache.chemistry.opencmis.server.impl.atompub.ObjectService.create(ObjectService.java:86)
...

at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)