Impala supports Ozone Erasure Coding

[Wei-Chiu Chuang <we...@apache.org>]

Hi community,

We've been developing this feature for a while. Impala now supports Ozone,
both Ratis as well as Erasure Coding buckets. IMPALA-11476
<https://issues.apache.org/jira/browse/IMPALA-11476> tracks the Impala
Ozone EC support.

The feature is completely supported in Apache Impala 4.3.0 (unreleased,
currently in master branch) and Apache Ozone 1.4.0 (unreleased, currently
in master branch)

Back in the ApacheCon last October, we showcased the work in progress at
the time. If you're interested, please move over to:
https://ozone.apache.org/assets/04_Chuang_Performance_of_Apache.pdf

I want to add a user doc in the Ozone website in the future
so interested users can try out. But for now, there is a Cloudera user doc
available:
https://docs.cloudera.com/cdw-runtime/1.5.1/impala-reference/topics/impala-ec-overview.html

Let us know if you're interested in trying out! I'm happy to get more
feedbacks.

Best,
Weichiu