When creating Blob with Hibernate, I get exception with files larger than Integer.MAX_VALUE bytes. Debugged the code and found that org.hibernate.engine.jdbc.BlobProxy returns negative value for stream length.
Usage:
session.getLobHelper().createBlob(InputStream stream, long length)

I suggest that the cause is in StreamBackedBinaryStream.getLength(): long -> int -> long
public long getLength()

Currently using Hibernate 4.2, but saw the same kind of casting in Hibernate 5.

Stack trace:
java.lang.IndexOutOfBoundsException
at java.io.FileInputStream.readBytes(Native Method)
at java.io.FileInputStream.read(FileInputStream.java:255)
at org.postgresql.jdbc2.AbstractJdbc2Statement.setBlob(AbstractJdbc2Statement.java:2890)
at org.jboss.resource.adapter.jdbc.WrappedPreparedStatement.setBlob(WrappedPreparedStatement.java:787)
at org.hibernate.type.descriptor.sql.BlobTypeDescriptor$4$1.doBind(BlobTypeDescriptor.java:118)
at org.hibernate.type.descriptor.sql.BasicBinder.bind(BasicBinder.java:93)
at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:280)
at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:275)
at org.hibernate.type.AbstractSingleColumnStandardBasicType.nullSafeSet(AbstractSingleColumnStandardBasicType.java:57)
at org.hibernate.persister.entity.AbstractEntityPersister.dehydrate(AbstractEntityPersister.java:2786)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3064)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3509)
at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:88)
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:364)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:356)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:277)
at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:328)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:52)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1234)
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:404)