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NetCDF Aggregation Exception



THREDDS:

I've adjusted the CDL in the NetCDF files of interest so that the time
is the slowest varying dimension.  And I have started small (with 6
instead of 6000) files.

Watching the logs I made sure there wer no errors/warnings associated
with this dataset entry:
When I goto the OPeNDAP Service link on this page:
http://nomads.ncdc.noaa.gov:8085/thredds/testDatasets.html?dataset=test/BOWdailyagg2
The following Java exception appears in threddsServlet.log:

============================================================================
  <dataset name="Blended Ocean Winds Test Daily Aggregation II"
      ID="test/BOWdailyagg2" urlPath="test/BOWdailyagg2" dataType="Grid" >
    <access serviceName="allTest" urlPath="test/BOWdailyagg2"
        dataFormat="netcdf" />

    <netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";>
     <aggregation dimName="time" type="joinExisting">
       <variableAgg name="wind" />
       <scan dateFormatMark="#yyyyMMdd" location="/raid/seawind-test/"
suffix="*.nc" />
     </aggregation>
    </netcdf>
  </dataset>
============================================================================
2006-07-21T22:09:20.778 +0000 [    155709][      20] INFO  -
thredds.servlet.ServletUtil - Remote host: 192.153.129.21 - Request:
"GET /thredds/dodsC/test/BOWdailyagg2.html HTTP/1.1"
2006-07-21T22:09:20.780 +0000 [    155711][      20] ERROR -
dods.servlet.DODSServlet - DODSServlet.anyExceptionHandler
java.lang.ArrayIndexOutOfBoundsException: -1
        at java.util.ArrayList.get(ArrayList.java:326)
        at ucar.nc2.ncml.Aggregation.getTypicalDataset(Aggregation.java:549)
        at
ucar.nc2.ncml.Aggregation.aggExistingDimension(Aggregation.java:558)
        at ucar.nc2.ncml.Aggregation.finish(Aggregation.java:361)
        at ucar.nc2.ncml.NcMLReader.readNetcdf(NcMLReader.java:353)
        at
thredds.servlet.DatasetHandler$NcmlFileFactory.open(DatasetHandler.java:146)
        at ucar.nc2.NetcdfFileCache.acquire(NetcdfFileCache.java:181)
        at
thredds.servlet.DatasetHandler.getNcmlDataset(DatasetHandler.java:125)
        at
thredds.servlet.DatasetHandler.getNetcdfFile(DatasetHandler.java:57)
        at
dods.servers.netcdf.NcDODSServlet.getDataset(NcDODSServlet.java:355)
        at dods.servlet.DODSServlet.doGetHTML(DODSServlet.java:963)
        at dods.servlet.DODSServlet.doGet(DODSServlet.java:1463)
        at dods.servers.netcdf.NcDODSServlet.doGet(NcDODSServlet.java:274)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:284)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
        at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:257)
        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
        at
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:245)
        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:199)
        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:509)
        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:195)
        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:164)
        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
        at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:578)
        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:156)
        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:972)
        at
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:206)
        at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
        at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:700)
        at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:584)
        at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
        at java.lang.Thread.run(Thread.java:534)
============================================================================

What am I doing wrong?
Is this more likely a problem with the configuration file or with the
data files?

-- 
Dan Swank <address@hidden>
NOMADS Project:  Software & Data Management
Contractor - STG, Incorporated
Veach-Baley Federal Building
151 Patton Avenue
Asheville, NC 28801-5001
Phone: 828-271-4007

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