The maintained location (and the version we use in prod) is: https://github.com/airlift/aircompressor/tree/master/src/main/java/io/airlift/compress/zstd
We plan on writing the compressor soon as we need it for our production systems. BTW we are about to do a release that fixes a bug with zstd. -dain > On May 4, 2018, at 11:19 AM, Xiening Dai <xndai....@live.com> wrote: > > Hi all, > > I think the major reason that we don’t support zstd compressor today is that > there’s no native java library currently. But I do see a java decompressor in > presto code base - > > https://github.com/prestodb/presto/blob/8f4e5bb9340890f01291ee1b777a1b2b921a90c4/presto-orc/src/main/java/com/facebook/presto/orc/zstd/ZstdDecompressor.java > > I wonder if we can just integrate this so at least we have the decompress > ability. I believe this is valuable as there are Orc files compressed in > zstd, including some presto workload, and some of the workload in our > installation (generated by c++ writer with zstd compression). > >
