SNAP8 Sentinel-3 reader error messages

[FedericoF]

I believe there should be some errors related to Sentinel-3 reader.
The error messages reported at the end of this post are displayed when trying to open and/or process Sentinel-3 OLCI data (I have tested EFR, SYN and VGT products).
Similar errors have been already reported here:

Error opening S3-SYN (SAFE) format with snap v8

This problem was reported previously, but not tagged “Problem Report”, see here: The error message I get, when opening unzipped SAFE data containing S3-SYN via the manifest file with snap-v8 (current as of today) is: java.lang.RuntimeException: Waiting thread received a null tile. at com.sun.media.jai.util.SunTileScheduler.scheduleTile(Unknown Source) at javax.media.jai.OpImage.getTile(Unknown Source) at javax.media.jai.RenderedOp.getTile(Unknown Source) at org.esa.snap.core.datamodel.…

Not able to open or visualize S3 products in SNAP8

Hello, I am having troubles in opening S3 data in SNAP8. Following error message pops up: A java.lang.IncompatibleClassChangeError exception has ocurred. With following details: java.lang.IncompatibleClassChangeError: Class ucar.nc2.Variable does not implement the requested interface ucar.nc2.VariableIF at org.esa.s3tbx.dataio.s3.util.S3VariableOpImage.computeRect(S3VariableOpImage.java:70) at javax.media.jai.SourcelessOpImage.computeTile(Unknown Source) at com.sun.media.jai.util.SunT…

Reading the data opening the xfdumanifest.xml file, I receive the error message when trying to read EFR and VGT products, but the products are then visible in the Product Explorer tab. The error occurs also when trying to display the data or execute an operator.
It is not possible to display product bands, execute operators or export file to BEAM-DIMAP format. On the contrary, the product can be used to create new bands with band math, when no other band are required for the calculation (i.e. using formula ‘rint(1)’).

Diversely, when trying to open SYN products, the error is displayed and no product is then visible in the Product explorer tab.

I do not believe the error is related to the NetCDF library itself, since no errors are reported when opening single Sentinel-3 OLCI bands in NetCDF format, or other file in NetCDF generic format.

The error is reported using SNAP8 with all the installed updates on a Linux OS.
On the same machine, using SNAP8 with all the installed updates on a Windows 10 OS no errors are reported and I can process and display data without problems.

Sentinel-3 OLCI EFR and VGT error message:

java.lang.IncompatibleClassChangeError: Class ucar.nc2.Variable does not implement the requested interface ucar.nc2.VariableIF
at org.esa.s3tbx.dataio.s3.util.S3VariableOpImage.computeRect(S3VariableOpImage.java:70)
at javax.media.jai.SourcelessOpImage.computeTile(Unknown Source)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(Unknown Source)
at javax.media.jai.OpImage.getTile(Unknown Source)
at javax.media.jai.PointOpImage.computeTile(Unknown Source)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(Unknown Source)
at javax.media.jai.OpImage.getTile(Unknown Source)
at javax.media.jai.PlanarImage.cobbleDouble(Unknown Source)
at javax.media.jai.PlanarImage.getData(Unknown Source)
at javax.media.jai.PlanarImage.getData(Unknown Source)
at javax.media.jai.RenderedOp.getData(Unknown Source)
at org.esa.s3tbx.dataio.s3.Sentinel3ProductReader.readTiePointGridRasterData(Sentinel3ProductReader.java:125)
at org.esa.snap.core.datamodel.TiePointGrid.readGridData(TiePointGrid.java:298)
at org.esa.snap.core.datamodel.TiePointGrid.getGridData(TiePointGrid.java:268)
at org.esa.snap.core.datamodel.TiePointGrid.getTiePoints(TiePointGrid.java:259)
at org.esa.snap.core.datamodel.TiePointGrid.initDiscont(TiePointGrid.java:921)
at org.esa.snap.core.datamodel.TiePointGrid.getPixelDouble(TiePointGrid.java:525)
at org.esa.snap.core.datamodel.TiePointGeoCoding.getGeoPos(TiePointGeoCoding.java:363)
at org.esa.snap.core.util.GeoUtils.getGeoBoundary(GeoUtils.java:285)
at org.esa.snap.core.util.GeoUtils.createGeoBoundary(GeoUtils.java:62)
at org.esa.snap.core.util.GeoUtils.createGeoBoundaryPaths(GeoUtils.java:188)
at org.esa.snap.worldwind.layers.DefaultProductLayer.addOutline(DefaultProductLayer.java:224)
at org.esa.snap.worldwind.layers.DefaultProductLayer.addProduct(DefaultProductLayer.java:164)
at org.esa.snap.worldwind.WWBaseToolView.lambda$setProducts$3(WWBaseToolView.java:117)
at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:485)
at org.esa.snap.worldwind.WWBaseToolView.setProducts(WWBaseToolView.java:113)
at org.esa.snap.worldwind.WWProductManagerListener.productAdded(WWProductManagerListener.java:36)
at org.esa.snap.core.datamodel.ProductManager.fireEvent(ProductManager.java:310)
at org.esa.snap.core.datamodel.ProductManager.fireEvent(ProductManager.java:302)
at org.esa.snap.core.datamodel.ProductManager.addProduct(ProductManager.java:170)
at org.esa.snap.rcp.actions.file.ReadProductOperation.lambda$run$1(ReadProductOperation.java:72)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.awt.EventQueue$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
[catch] at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

Sentinel-3 OLCI SYN error message:

java.lang.RuntimeException: Waiting thread received a null tile.
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(Unknown Source)
at javax.media.jai.OpImage.getTile(Unknown Source)
at javax.media.jai.PlanarImage.getData(Unknown Source)
at org.esa.snap.core.image.VirtualBandOpImage.addDataToReferredRasterDataSymbols(VirtualBandOpImage.java:307)
[catch] at org.esa.snap.core.image.VirtualBandOpImage.computeTile(VirtualBandOpImage.java:235)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(Unknown Source)
at javax.media.jai.OpImage.getTile(Unknown Source)
at com.sun.media.jai.util.SunTileScheduler.compute(Unknown Source)
at com.sun.media.jai.util.TileJob.compute(Unknown Source)
at com.sun.media.jai.util.WorkerThread.run(Unknown Source)

Hope these information can help to solve the problems.

Federico

[marpet]

Hi Federico,

@FedericoF

java.lang.IncompatibleClassChangeError: Class ucar.nc2.Variable does not implement the requested interface ucar.nc2.VariableIF

This issue could be caused by a corrupted snap installation. Maybe you have replaced SNAP 7 with SNAP 8. Try a clean installation SNAP 8.

The other exception is probably related to this one:

SNAP new Version BIG Problem with data gaps!

Hello SNAP-Team, I am currently teaching around 100 students using SNAP. Since a few days - I think it corresponds to the newest version - several students of my class report about big problems with SNAP when calculating new bands with the band math tool. The new calculated band sometimes has gaps in between. It looks as if a tile of the image is not calculated at all. There are whole rectangular squares missing in the new band. Here an example from a calculated mask. This mask was simply calc…

and it is under investigation.

[FedericoF]

Thanks @marpet for the suggestion.
A clean SNAP 8 installation solved the problem. It has been important to remove the ‘.snap’ folder located in the home directory before the installation setup.
On another Linux machine I had the same problem and I could solve it just removing the ‘.snap’ folder located in the home directory.

Thank you for support,

Federico