This patch adds the binding classes to enable spark to switch dataframe output to using the S3A zero-rename committers shipping in Hadoop 3.1+. It adds a source tree into the hadoop-cloud-storage module which only compiles with the hadoop-3.2 profile, and contains a binding for normal output and a specific bridge class for Parquet (as the parquet output format requires a subclass of `ParquetOutputCommitter`.
Commit algorithms are a critical topic. There's no formal proof of correctness, but the algorithms are documented an analysed in [A Zero Rename Committer](https://github.com/steveloughran/zero-rename-committer/releases). This also reviews the classic v1 and v2 algorithms, IBM's swift committer and the one from EMRFS which they admit was based on the concepts implemented here.
Test-wise
* There's a public set of scala test suites [on github](https://github.com/hortonworks-spark/cloud-integration)
* We have run integration tests against Spark on Yarn clusters.
* This code has been shipping for ~12 months in HDP-3.x.
Closes#24970 from steveloughran/cloud/SPARK-23977-s3a-committer.
Authored-by: Steve Loughran <stevel@cloudera.com>
Signed-off-by: Marcelo Vanzin <vanzin@cloudera.com>
