The `S3RetryingInputStream` hides cases where S3 closes a connection partway through downloading a blob. By default it retries 3 times before failing the download. However, the number of failures tends to increase on larger blobs and often 3 failures is not enough to complete a multi-GB download if S3 is suffering from a cluster of failures as sometimes happens. Typically we make 10s-to-100s of MBs of progress between each failure even in this state.

I think we should increase the tenacity of `S3RetryingInputStream` when downloading larger blobs. For instance, we could not count a partial download towards the retry limit if it makes significant progress before failing.
test/framework/src/main/java/org/elasticsearch/repositories/blobstore/AbstractBlobContainerRetriesTestCase.java
sendIncompleteContent(exchange, bytes);
            }
            if (randomBoolean()) {
                exchange.close();
            }
        });
        final int position = randomIntBetween(0, bytes.length - 1);
        final int length = randomIntBetween(0, randomBoolean() ? bytes.length : Integer.MAX_VALUE);
        try (InputStream inputStream = blobContainer.readBlob("read_range_blob_max_retries", position, length)) {
            final int readLimit;
            final InputStream wrappedStream;
            if (randomBoolean()) {
                
                readLimit = randomIntBetween(0, length);
                wrappedStream = Streams.limitStream(inputStream, readLimit);
            } else {
                readLimit = length;
                wrappedStream = inputStream;
            }
            final byte[] bytesRead = BytesReference.toBytes(Streams.readFully(wrappedStream));
            logger.info(
                "maxRetries={}, position={}, length={}, readLimit={}, byteSize={}, bytesRead={}",
                maxRetries,
                position,
                length,
                readLimit,
                bytes.length,
                bytesRead.length
            );
            assertArrayEquals(Arrays.copyOfRange(bytes, position, Math.min(bytes.length, position + readLimit)), bytesRead);