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Windowed Reading GeoTiffs from S3 and Hdfs - #1763
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@jbouffard can you make sure to include the changes @pomadchin mentions here: #1758 (comment) |
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@lossyrob Yeah, I was just about to do that. |
Fixed issue with json
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Made another change to HadoopGeoTiffRDDSpec Yet Another revision
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Fixed issue that caused Travis to fail Fixed the errors for real this time
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jbouffard
changed the title
| cfor(0)(_ < offsets.size, _ + 1) { i => | ||
| byteReader.position(offsets(i).toInt) | ||
| result(i) = byteReader.getSignedByteArray(byteCounts(i).toInt) | ||
| result(i) = byteReader.getSignedByteArray(byteCounts(i), offsets(i)) |
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Stale doc string, byteBuffer no longer a prameter
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oldOffset is unused. Looks like the previous version of this file used it to return position, I would guess thats not a good idea and this variable needs to be removed now.
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Fixed the doc string. Yeah, oldOffset was actually always redundant since getSignedByteArray does it already.
| cfor(0)(_ < offsets.size, _ + 1) { i => | ||
| byteReader.position(offsets(i).toInt) | ||
| result(i) = byteReader.getSignedByteArray(byteCounts(i).toInt) | ||
| result(i) = byteReader.getSignedByteArray(byteCounts(i), offsets(i)) |
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This maybe a conversation that already happened but why are there ByteReaderExtensions when we control the trait we're extending? Why shouldn't getSignedByteArray and others be methods on ByteReader trait directly?
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ByteReader is meant to be a replacement for ByteBuffer, so I wanted the two to have the same methods (or at least have them be as close as possible). Since none of the methods in ByteReaderExtensions are in ByteBuffer, they were made into their own separate thing.
| * @param storageMethod: The [[StorageMethod]] of the GeoTiff | ||
| * @param tifftags: The [[TiffTags]] of the GeoTiff | ||
| * @return A new instance of BufferSegmentBytes | ||
| * @return A new instance of LazySegmentBytes |
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@param section is out of sync with code
| final def getSignedByteArray(length: Long, valueOffset: Long): Array[Byte] = { | ||
| val arr = Array.ofDim[Byte](length.toInt) | ||
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| // NOTE: We don't support lengths greater than Int.MaxValue yet (or ever). |
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This comment should be in a doc string
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Also if so, why is the length parameter Int?
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Fixed it. Why it was converted to Int? That's because you can't make an Array.ofDim using a Long.
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This PR was based on another, preexisting PR: #1758
Two new features are added to Geotrellis with this PR: Reading windowed GeoTiffs from S3 and Hdfs. These features will allow for the breaking up of large GeoTiffs into smaller tiles over a distributed system. By using this method, the computation time for each GeoTiff that needs to analyzed can be shortened considerably.
To do:
SpatialGeoTiffsTemporalGeoTiffs