yyt86 commented on a change in pull request #4557:
URL: https://github.com/apache/iotdb/pull/4557#discussion_r785267956
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File path: LICENSE
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@@ -225,11 +225,13 @@ The following files include code modified from Michael
Burman's gorilla-tsc proj
./tsfile/src/main/java/org/apache/iotdb/tsfile/encoding/encoder/LongGorillaEncoder.java
./tsfile/src/main/java/org/apache/iotdb/tsfile/encoding/encoder/SinglePrecisionEncoderV2.java
./tsfile/src/main/java/org/apache/iotdb/tsfile/encoding/encoder/DoublePrecisionEncoderV2.java
+./tsfile/src/main/java/org/apache/iotdb/tsfile/encoding/encoder/ZigzagEncoder.java
Review comment:
Sorry for the late reply. I didn't notice the comment. The
[Zigzag](https://gist.github.com/mfuerstenau/ba870a29e16536fdbaba) algorithm
has a different idea from the gorilla. The benefit of Zigzag is converting
negative numbers to positive ones and compressing them.
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