xinglin commented on code in PR #4208:
URL: https://github.com/apache/hadoop/pull/4208#discussion_r854824985
##########
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/compress/snappy/TestSnappyCompressorDecompressor.java:
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@@ -278,7 +285,38 @@ public void testSnappyBlockCompression() {
fail("testSnappyBlockCompression ex error !!!");
}
}
-
+
+ @Test
+ // The buffer size is smaller than the input.
+ public void testSnappyCompressDecompressWithSmallBuffer() throws Exception {
+ int inputSize = 1024 * 50;
+ int bufferSize = 512;
+ ByteArrayOutputStream out = new ByteArrayOutputStream();
+ byte[] buffer = new byte[bufferSize];
+ byte[] input = BytesGenerator.get(inputSize);
+
+ SnappyCompressor compressor = new SnappyCompressor();
+ compressor.setInput(input, 0, inputSize);
+ compressor.finish();
+ while (!compressor.finished()) {
+ int len = compressor.compress(buffer, 0, buffer.length);
+ out.write(buffer, 0, len);
+ }
+ byte[] compressed = out.toByteArray();
+ assertTrue(compressed.length > 0);
+ out.reset();
+
+ SnappyDecompressor decompressor = new SnappyDecompressor();
+ decompressor.setInput(compressed, 0, compressed.length);
+ while (!decompressor.finished()) {
+ int len = decompressor.decompress(buffer, 0, buffer.length);
+ out.write(buffer, 0, len);
+ }
+ byte[] decompressed = out.toByteArray();
+
+ assertTrue(Arrays.equals(decompressed, input));
Review Comment:
ack. Thanks for the suggestion.
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