Re: [netcdf-java] Variable object thread safe?

• To: Stuart Maclean <stuart@xxxxxxxxxxxxxxxxxx>
• Subject: Re: [netcdf-java] Variable object thread safe?
• From: John Caron <caron@xxxxxxxxxxxxxxxx>
• Date: Mon, 15 Sep 2008 13:48:24 -0600

John Caron wrote:
> Hi Stuart:
> 
> Underneath a Variable/NetcdfFile is (usually) a java.io.RandomAccessFile 
> object, which is not thread-safe, because it keeps the state of the file 
> position. So even if all you want to do is read data in multiple threads, you 
> need to synchronize, typically on the NetcdFile object. Alternatively, open a 
> new NetcdfFile for each thread. The Threads Data Server (TDS) uses a cache of 
> open NetcdfFile files by using the NetcdfFile.acquire() method, which allows 
> stateless handling of data requests minimizing file opening and closing..

Sorry that should have been NetcdfDataset.acquireFile()

• References:
  • [netcdf-java] Variable object thread safe?
    • From: Stuart Maclean
  • Re: [netcdf-java] Variable object thread safe?
    • From: John Caron