Hi all, I'm still working on starting a RC vote for Impala 4.0.0. It's delayed unfortunately since we continually found brokers.
One blocker is we found that some machines don't support AVX2 which will be broken by the previous change in IMPALA-9690. We finally added a new flag enable_legacy_avx_support to support machines that only support AVX but not AVX2. Thank Joe McDonnell for working on this! Another blocker is a correctness bug: https://issues.apache.org/jira/browse/IMPALA-10755 Aman Sinha is currently working on it. Thank Aman! There is also a bug fix that I'd like to take in 4.0.0: https://gerrit.cloudera.org/c/17604/ (IMPALA-9763). Hopefully, after these two issues are resolved, we can start the RC vote. On the other hand, I'm thinking about how to improve the readability of our release notes. Previously we just group all the JIRAs into different types. But this release has >700 JIRAs. It'd be better to have something like Kudu does: https://kudu.apache.org/docs/release_notes.html This would require lots of work. I'm going to create a google doc to consolidate the major changes and invite contributors to edit it together. Please let me know if you have any suggestions. Thanks, Quanlong
