lazyLoad with CSV blows up on last line?

[Tim Dudgeon]

I'm trying to use the CSV data format to handle a large file.
Thinking I should use CsvDataFormat.setLazyLoad(true)
I sort of got it working but it blows up on the last line of the file 
with a java.io.IOException: Stream closed exception.
Is this a bug, or am I dong it wrong? This is with Camel 2.13.0
Here is example of what I'm doing:

CsvDataFormat csv = new CsvDataFormat()
csv.setDelimiter(' ')
csv.setSkipFirstLine(false)
csv.setLazyLoad(true)

CamelContext camelContext = new DefaultCamelContext()
camelContext.addRoutes(new RouteBuilder() {
        def void configure() {
            from('direct:start')
            .unmarshal(csv)
            .split(body()).streaming()
            .log('row: ${body}')
        }
    })
camelContext.start()

ProducerTemplate t = camelContext.createProducerTemplate()
t.sendBody('direct:start', new File('/Users/timbo/data/test.txt'))

camelContext.stop()

And here is exception.

java.lang.IllegalStateException: java.io.IOException: Stream closed
    at 
org.apache.camel.dataformat.csv.CsvIterator.next(CsvIterator.java:61)
    at 
org.apache.camel.processor.Splitter$SplitterIterable$1.next(Splitter.java:170)
    at 
org.apache.camel.processor.Splitter$SplitterIterable$1.next(Splitter.java:146)
    at 
org.apache.camel.processor.MulticastProcessor.doProcessSequential(MulticastProcessor.java:502)
    at 
org.apache.camel.processor.MulticastProcessor.process(MulticastProcessor.java:215)
    at org.apache.camel.processor.Splitter.process(Splitter.java:98)
    at 
org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72)
    at 
org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:398)
    at 
org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
    at org.apache.camel.processor.Pipeline.process(Pipeline.java:118)
    at org.apache.camel.processor.Pipeline.process(Pipeline.java:80)
    at 
org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
    at 
org.apache.camel.component.direct.DirectProducer.process(DirectProducer.java:51)
    at 
org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
    at 
org.apache.camel.processor.UnitOfWorkProducer.process(UnitOfWorkProducer.java:73)
    at 
org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:378)
    at 
org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:346)
    at 
org.apache.camel.impl.ProducerCache.doInProducer(ProducerCache.java:242)
    at 
org.apache.camel.impl.ProducerCache.sendExchange(ProducerCache.java:346)
    at org.apache.camel.impl.ProducerCache.send(ProducerCache.java:184)
    at 
org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:124)
    at 
org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:137)
    at 
org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:144)
    at org.apache.camel.ProducerTemplate$sendBody.call(Unknown Source)

Thanks
Tim