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[netCDFJava #NWR-841654]: EOFException: Reading file.grb2.ncx at 0 file length = 0

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  • Subject: [netCDFJava #NWR-841654]: EOFException: Reading file.grb2.ncx at 0 file length = 0
  • Date: Fri, 28 Feb 2014 11:19:54 -0700
Rob,

Apparently, we need to leave some things open in order for the indexer 
to work properly.  The trouble is that if some problem occurs, then 
someone needs to close but that message gets lost.  I looked into 
putting some sort of fix into our current development branch (4.4.3), 
but raf touches and is touched in lots of places. The next development 
branch is 4.5, which actually already has quite a bit of rework on grib, 
collections, and file access.  Most likely, the fix will be in that 
branch, which is a few months away.

-Lansing

On 2/27/2014 12:10 PM, Rob Weingruber wrote:
> New Client Reply: EOFException: Reading file.grb2.ncx at 0 file length = 0
>
> Lansing -
>
> What did you think of the following:
>
>   > Thinking out loud....
>   > In Grib1CollectionBuilder's
>> protected boolean readIndex(RandomAccessFile raf) method,
>   > should you close the index file (raf) when you catch the IOException, or 
> EOFException or Throwable?
>
> The comment at the beginning of the readIndex method even says:
>
> gc.setIndexRaf(raf); // LOOK leaving the raf open in the GribCollection
>
> Definitely seems like a RAF leak to me, though I may not have the whole 
> picture in mind. Since the readIndex method catches any Throwables, and the 
> readOrCreateIndexFromSingleFile method does not check the return boolean from 
> readIndex, I can't imagine there's anywhere the RAF is closed.
>
> Thoughts?
>
> Thanks,
> Rob
>
> On 02/25/2014 10:54 AM, Unidata netCDF Java Support wrote:
>> Rob,
>>
>> Can you verify whether or not the .ncx file in the stack trace is actually 
>> of zero length?
>>
>> -Lansing
>>
>> Ticket Details
>> ===================
>> Ticket ID: NWR-841654
>> Department: Support netCDF Java
>> Priority: Normal
>> Status: Open
>
>
>
> Ticket Details
> ===================
> Ticket ID: NWR-841654
> Department: Support netCDF Java
> Priority: Normal
> Status: Open
> Link:  
> https://www.unidata.ucar.edu/esupport/staff/index.php?_m=tickets&_a=viewticket&ticketid=23410



Ticket Details
===================
Ticket ID: NWR-841654
Department: Support netCDF Java
Priority: Normal
Status: Open