Hi all,
Broadly, I was interested in a similar issue of having GeoServer serve
up GeoTiffs from HDFS. I wrote about what I had to do here (1) on the
GeoServer list.
I'm guessing the error here has to do with an issue in handling
InputStreams. The GeoTiff reader can also work with ImageInputStreams.
That's why I suggested on your SO question (2) to wrap the
FileInputStream in a MemoryCacheImageInputStream. Have you had a chance
to try that out?
Cheers,
Jim
1.
http://osgeo-org.1560.x6.nabble.com/Reading-GeoTiffs-from-HDFS-td5261637.html
2.
http://stackoverflow.com/questions/41103428/geotiffreader-and-inputfilestream
On 12/15/2016 10:39 AM, Bruce Ikelheimer wrote:
I want to bring back an old topic, because I did not see that it was
finally solved in a way I can use. I want to be able to load in a
geotiff file from a server (an AWS s3 bucket in particular). I am up
for any method, but I tried to simply pass GeoTiffReader an input
stream rather than a file. I am using Geotools 16 (built up with Maven
with Eclipse). When I create the reader with the following lines:
FileInputStream geotiffFile = new
FileInputStream("location_of_tiff\\tiffFile.tif");
GridCoverage2DReader tiffReader = new GeoTiffReader(geotiffFile);
the class is generated no problem. I can read in the coordinate
system, the size, the number of bands, everything...except the actual
data. The following read line:
rasterData = tiffReader.read(null);
causes the following (partial) stack.
Caused by: javax.imageio.IIOException: I/O error reading header!
at
it.geosolutions.imageioimpl.plugins.tiff.TIFFImageReader.readHeader(TIFFImageReader.java:458)
at
it.geosolutions.imageioimpl.plugins.tiff.TIFFImageReader.locateImage(TIFFImageReader.java:465)
at
it.geosolutions.imageioimpl.plugins.tiff.TIFFImageReader.seekToImage(TIFFImageReader.java:589)
at
it.geosolutions.imageioimpl.plugins.tiff.TIFFImageReader.getImageTypes(TIFFImageReader.java:1104)
at
javax.imageio.ImageReader.getRawImageType(ImageReader.java:681)
at
com.sun.media.jai.imageioimpl.ImageReadOpImage.layoutHelper(ImageReadOpImage.java:228)
at
com.sun.media.jai.imageioimpl.ImageReadOpImage.<init>(ImageReadOpImage.java:473)
at
com.sun.media.jai.imageioimpl.ImageReadCRIF.create(ImageReadCRIF.java:309)
... 15 more
Caused by: java.io.EOFException
at
javax.imageio.stream.ImageInputStreamImpl.readShort(ImageInputStreamImpl.java:229)
at
javax.imageio.stream.ImageInputStreamImpl.readUnsignedShort(ImageInputStreamImpl.java:242)
at
it.geosolutions.imageioimpl.plugins.tiff.TIFFImageReader.readHeader(TIFFImageReader.java:404)
... 22 more
I have set this up to access a local file on my machine, but I get the
exact same errors if I access the file on an s3 bucket. If, instead of
the FileInputStream, I pass in a File, it works fine with no problems.
I feel I am so close, but my noob status means I have no idea how to
fix this!!!
----------------------
Bruce J. Ikelheimer, Ph.D.
Acoustic Analytics
89 Saint Dunstan’s Rd. | Asheville, NC 28803
(703) 403-9842
www.AcousticAnalytics.com <http://www.AcousticAnalytics.com>
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