#1 if there isn't a JIRA I would guess no-one is working on it (Note I would expect at least the initial work to be in aParquet JIRA item, and this is probably a discussion for that mailing list). #2. There are some open PR to expose the parquet reader through JNI to java [1] #3. Its possible Dremio has some code that does this. I'm not sure what the current status of predicate pushdown in the C++ code base is.
[1] https://github.com/apache/arrow/pull/5719 On Wed, Nov 13, 2019 at 6:05 PM Chang Chen <baibaic...@gmail.com> wrote: > Hi > > I am trying to find doc about current parquet-cpp current status. i > googled it, but i didn't find any useful information. > > here are what i concerned about: > #1 column indexes (https://issues.apache.org/jira/browse/PARQUET-1201), > the corresponding java implementation already supported it last year, > though it wasn't pushed to repo. > #2 A vectorized column reader interface which can be integrated in JAVA. > #3 the feature was illustrated here( > https://www.dremio.com/webinars/columnar-roadmap-apache-parquet-and-arrow/ > ), > a better predict push down algorithm. > > Thanks >
