camel stream cache data loss issue

// <streamCaching id="myCacheConfig" bufferSize="4194304" spoolDirectory="/tmp/cachedir" spoolThreshold="65536"/>

<route>
<from uri="file:src/data?noop=true" />
<log message=" $simple{in.header.CamelFileName}" />
<log id="ftplog1"
message="file Consumed '${headers[CamelFileName]}': '${headers[Exchange.FILE_LAST_MODIFIED]}'  " />
<convertBodyTo type="String" />
<log message="===after converting is : ${body.length}" />
<to uri="activemq:queue:outputQueue?jmsMessageType=Stream" />
<log message="===Producer activemq route size : ${body.length}" />

</route>
<route>
<from uri="activemq:queue:outputQueue" />
<log message="==consumer activemq route body size : ${body.length}" />
<log message="=== message type is :${body.class.name}" />
<log
message="===this is exchange.headers in _message-handling-receive-msg: ${headers}" />
<log
message="===this is exchange.properties in _message-handling-receive-msg: ${exchange.properties}" />

</route>

// [s) thread #2 - file://src/data] route1                         INFO   message1.txt
[s) thread #2 - file://src/data] route1                         INFO  file Consumed 'message1.txt': ''  
[s) thread #2 - file://src/data] route1                         INFO  ===after converting is : 4194304
[               ActiveMQ Task-1] FailoverTransport              INFO  Successfully connected to tcp://localhost:61616
[s) thread #2 - file://src/data] route1                         INFO  ===Producer activemq route size : 4194304
[ #3 - JmsConsumer[outputQueue]] route2                         INFO  ==consumer activemq route body size : 131072
[ #3 - JmsConsumer[outputQueue]] route2                         INFO  === message type is :org.apache.camel.converter.stream.InputStreamCache

consumer route is not getting complete data, and i see '/tmp/cachedir' empty. what is wrong in above configuration