Joining tables from S3 occasionaly fails with NumberFormatException

[org.teiid.CONNECTOR] (Worker0_QueryProcessorQueue3373) Connector worker process failed for atomic-request=ZwjBqkPjJdw2.386.4.689: java.lang.NumberFormatException: For input string: ""
  at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) [rt.jar:1.8.0_131]
  at java.lang.Long.parseLong(Long.java:601) [rt.jar:1.8.0_131]
  at java.lang.Long.parseLong(Long.java:631) [rt.jar:1.8.0_131]
  at java.text.DigitList.getLong(DigitList.java:195) [rt.jar:1.8.0_131]
  at java.text.DecimalFormat.parse(DecimalFormat.java:2051) [rt.jar:1.8.0_131]
  at java.text.SimpleDateFormat.subParse(SimpleDateFormat.java:1869) [rt.jar:1.8.0_131]
  at java.text.SimpleDateFormat.parse(SimpleDateFormat.java:1514) [rt.jar:1.8.0_131]
  at java.text.DateFormat.parse(DateFormat.java:364) [rt.jar:1.8.0_131]
  at org.teiid.translator.amazon.s3.S3ProcedureExecution.next(S3ProcedureExecution.java:488) [translator-amazon-s3-8.12.11.6_4-redhat-64-6.jar:8.12.11.6_4-redhat-64-6]
  at org.teiid.dqp.internal.datamgr.ConnectorWorkItem.handleBatch(ConnectorWorkItem.java:433)
  at org.teiid.dqp.internal.datamgr.ConnectorWorkItem.more(ConnectorWorkItem.java:236)
  at sun.reflect.GeneratedMethodAccessor211.invoke(Unknown Source) [:1.8.0_131]
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_131]
  at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_131]
  at org.teiid.dqp.internal.datamgr.ConnectorManager$1.invoke(ConnectorManager.java:211)
  at com.sun.proxy.$Proxy79.more(Unknown Source)
  at org.teiid.dqp.internal.process.DataTierTupleSource.getResults(DataTierTupleSource.java:309)
  at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:112)
  at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:108)
  at java.util.concurrent.FutureTask.run(FutureTask.java:266) [rt.jar:1.8.0_131]
  at org.teiid.dqp.internal.process.FutureWork.run(FutureWork.java:65)
  at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:280)
  at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:119)
  at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:210)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_131]
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_131]
  at java.lang.Thread.run(Thread.java:748) [rt.jar:1.8.0_131]