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When using the org.geotools.imageio.unidata.UnidataImageReader in geoserver for Netcdf based coverages, a file descriptor leak occurs because geoserver does not dispose the reader when using JAI.
Other geotools readers do not have this issue because of this code in AbstractGridCoverage2DReader (1045):
/**
* Forcing disposal of this {@link AbstractGridCoverage2DReader} which may keep an {@link ImageInputStream} open.
*/
@Override
protected void finalize() throws Throwable {
dispose();
super.finalize();
}
I suggest adding this also to the super class of org.geotools.imageio.unidata.UnidataImageReader.
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