With VAM, that uses JBoss Marshaller underneath, FileCacheStore.fromStreamLockSafe() should only
try to read as many bytes as "int numBytes = objectInput.readInt();" returned or streamBufferSize if bigger,
otherwise it will read too much. Remember that to safe payload space, JBMAR avoided adding markers
at the end of each object so we should make sure only the required number of bytes are read.