SteveYurongSu commented on code in PR #9231:
URL: https://github.com/apache/iotdb/pull/9231#discussion_r1129022500
##########
tsfile/src/main/java/org/apache/iotdb/tsfile/compress/ICompressor.java:
##########
@@ -311,4 +316,61 @@ public CompressionType getType() {
return GZIP;
}
}
+
+ class ZstdCompressor implements ICompressor {
+
+ private int compressionLevel;
+
+ public ZstdCompressor() {
+ super();
+ compressionLevel = Zstd.maxCompressionLevel();
+ }
+
+ @Override
+ public byte[] compress(byte[] data) throws IOException {
+ return Zstd.compress(data, compressionLevel);
+ }
+
+ @Override
+ public byte[] compress(byte[] data, int offset, int length) throws
IOException {
+ if (data == null) {
+ return new byte[0];
+ }
+ byte[] toCompressData;
+ if (offset == 0 && length == data.length) {
+ toCompressData = data;
+ } else {
+ toCompressData = new byte[length];
+ System.arraycopy(data, offset, toCompressData, 0, length);
Review Comment:
I'm not sure. Is this necessary?
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