Investigate use of ExposedBAOS instead of BAOS when marshalling objects ----------------------------------------------------------------------- Key: JBCACHE-1382 URL: https://jira.jboss.org/jira/browse/JBCACHE-1382 Project: JBoss Cache Issue Type: Feature Request Security Level: Public(Everyone can see) Reporter: Manik Surtani Assignee: Manik Surtani Fix For: 2.2.1.CR2, 2.2.1.GA, 3.0.0.ALPHA2, 3.0.0.GA From Bela's email: "At least in AbstractMarshaller: public byte[] objectToByteBuffer(Object obj) throws Exception { ByteArrayOutputStream baos = new ByteArrayOutputStream(); ObjectOutputStream out = ObjectSerializationFactory.createObjectOutputStream(baos); objectToObjectStream(obj, out); out.close(); return baos.toByteArray(); } Here, an ExposedByteArrayOutputStream instead of a BAOS would prevent the COPY of the byte buffer. We also don't need to be concerned about reentrancy as the output streams are local (stack) variables... Maybe you guys should take a look at all occurrences of BAOS !"