Hello, There are a few issues related to block-vs-frame LZ4 compression in Parquet/Arrow and related
https://issues.apache.org/jira/browse/PARQUET-1241 <https://issues.apache.org/jira/browse/PARQUET-1241> https://issues.apache.org/jira/browse/PARQUET-1515 <https://issues.apache.org/jira/browse/PARQUET-1515> https://issues.apache.org/jira/browse/HADOOP-12990 <https://issues.apache.org/jira/browse/HADOOP-12990> https://github.com/dask/fastparquet/pull/315 <https://github.com/dask/fastparquet/pull/315> https://issues.apache.org/jira/browse/IMPALA-8617 <https://issues.apache.org/jira/browse/IMPALA-8617> Might anyone be able to summarize the current status and take a guess at the way forward? Thank you in advance, michael
