title: What's causing these ParseError exceptions when reading off an AWS SQS queue in my Storm cluster
body: <p>I'm using Storm 0.8.1 to read incoming messages off an Amazon SQS queue and am getting consistent exceptions when doing so:</p>
  
  <pre><code>2013-12-02 02:21:38 executor [ERROR] 
  java.lang.RuntimeException: com.amazonaws.AmazonClientException: Unable to unmarshall response (ParseError at [row,col]:[1,1]
  Message: JAXP00010001: The parser has encountered more than "64000" entity expansions in this document; this is the limit imposed by the JDK.)
          at REDACTED.spouts.SqsQueueSpout.handleNextTuple(SqsQueueSpout.java:219)
          at REDACTED.spouts.SqsQueueSpout.nextTuple(SqsQueueSpout.java:88)
          at backtype.storm.daemon.executor$fn__3976$fn__4017$fn__4018.invoke(executor.clj:447)
          at backtype.storm.util$async_loop$fn__465.invoke(util.clj:377)
          at clojure.lang.AFn.run(AFn.java:24)
          at java.lang.Thread.run(Thread.java:701)
  Caused by: com.amazonaws.AmazonClientException: Unable to unmarshall response (ParseError at [row,col]:[1,1]
  Message: JAXP00010001: The parser has encountered more than "64000" entity expansions in this document; this is the limit imposed by the JDK.)
          at com.amazonaws.http.AmazonHttpClient.handleResponse(AmazonHttpClient.java:524)
          at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:298)
          at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:167)
          at com.amazonaws.services.sqs.AmazonSQSClient.invoke(AmazonSQSClient.java:812)
          at com.amazonaws.services.sqs.AmazonSQSClient.receiveMessage(AmazonSQSClient.java:575)
          at REDACTED.spouts.SqsQueueSpout.handleNextTuple(SqsQueueSpout.java:191)
          ... 5 more
  Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,1]
  Message: JAXP00010001: The parser has encountered more than "64000" entity expansions in this document; this is the limit imposed by the JDK.
          at com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.setInputSource(XMLStreamReaderImpl.java:219)
          at com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.&lt;init&gt;(XMLStreamReaderImpl.java:189)
          at com.sun.xml.internal.stream.XMLInputFactoryImpl.getXMLStreamReaderImpl(XMLInputFactoryImpl.java:277)
          at com.sun.xml.internal.stream.XMLInputFactoryImpl.createXMLStreamReader(XMLInputFactoryImpl.java:129)
          at com.sun.xml.internal.stream.XMLInputFactoryImpl.createXMLEventReader(XMLInputFactoryImpl.java:78)
          at com.amazonaws.http.StaxResponseHandler.handle(StaxResponseHandler.java:85)
          at com.amazonaws.http.StaxResponseHandler.handle(StaxResponseHandler.java:41)
          at com.amazonaws.http.AmazonHttpClient.handleResponse(AmazonHttpClient.java:503)
          ... 10 more
  </code></pre>
  
  <p>I've debugged the data on the queue and everything looks good. I can't figure out why the API's XML response would be causing these problems. Any ideas?</p>