cxzl25 commented on code in PR #1743:
URL: https://github.com/apache/orc/pull/1743#discussion_r1451701538
##########
java/core/src/java/org/apache/orc/OrcConf.java:
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@@ -72,6 +72,21 @@ public enum OrcConf {
"Define the compression strategy to use while writing data.\n" +
"This changes the compression level of higher level compression\n" +
"codec (like ZLIB)."),
+ COMPRESSION_ZSTD_IMPL("orc.compression.zstd.impl",
+ "hive.exec.orc.compression.zstd.impl", "java",
+ "Define the implementation used with the ZStandard codec, java or
jni."),
+ COMPRESSION_ZSTD_LEVEL("orc.compression.zstd.level",
Review Comment:
source table: ORC zlib 4408374802439 4TB
### zstd-jni
orc.compression.zstd.level=3 (default)
zstd compress size: 3119313447131 2905G
orc.compression.zstd.level=10
zstd compress size: 2621369844393 2441G
### aircompressor
zstd compress size: 3138804372295 2923G
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