danielcweeks commented on code in PR #13997:
URL: https://github.com/apache/iceberg/pull/13997#discussion_r2370377186
##########
parquet/src/main/java/org/apache/iceberg/parquet/ParquetIO.java:
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@@ -123,6 +135,64 @@ public void seek(long newPos) throws IOException {
}
}
+ private static class ParquetRangeReadableInputStreamAdapter<
+ T extends org.apache.iceberg.io.SeekableInputStream & RangeReadable>
+ extends DelegatingSeekableInputStream implements RangeReadable {
+ private final T delegate;
+
+ private ParquetRangeReadableInputStreamAdapter(T delegate) {
+ super(delegate);
+ this.delegate = delegate;
+ }
+
+ @Override
+ public long getPos() throws IOException {
+ return delegate.getPos();
+ }
+
+ @Override
+ public void seek(long newPos) throws IOException {
+ delegate.seek(newPos);
+ }
+
+ @Override
+ public void readFully(long position, byte[] buffer, int offset, int
length) throws IOException {
+ delegate.readFully(position, buffer, offset, length);
+ }
+
+ @Override
+ public int readTail(byte[] buffer, int offset, int length) throws
IOException {
+ return delegate.readTail(buffer, offset, length);
+ }
+
+ @Override
+ public boolean readVectoredAvailable(ByteBufferAllocator allocate) {
+ return true;
+ }
+
+ @Override
+ public void readVectored(List<ParquetFileRange> ranges,
ByteBufferAllocator allocate)
+ throws IOException {
+ IntFunction<ByteBuffer> delegateAllocate = (allocate::allocate);
+ List<FileRange> delegateRange = convertRanges(ranges);
Review Comment:
I see now that we're calling `complete(...)` on the future in the read call.
Makes sense now.
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