[NIGHTLY] Arrow Build Report for Job nightly-2020-02-08-0

Arrow Build Report for Job nightly-2020-02-08-0 All tasks: https://github.com/ursa-labs/crossbow/branches/all?query=nightly-2020-02-08-0 Failed Tasks: - conda-win-vs2015-py36: URL: https://github.com/ursa-labs/crossbow/branches/all?query=nightly-2020-02-08-0-azure-conda-win-vs2015-py36 - co

[jira] [Created] (ARROW-7805) Apache Arrow HDFS Remove (rm) operation defaults to SkipTrash

bb created ARROW-7805: - Summary: Apache Arrow HDFS Remove (rm) operation defaults to SkipTrash Key: ARROW-7805 URL: https://issues.apache.org/jira/browse/ARROW-7805 Project: Apache Arrow Issue Type: Imp

[C++][Parquet] Is arrow::parquet::FileWriter::WriteColumnChunk intended to be public?

I'm asking because it doesn't seem to do validation that the schemas are equivalent between the array being written and the original schema? It also appears to only be used in unit tests. Thanks, Micah

[Format] Dictionary edge cases (encoding nulls and nested dictionaries)

I'd like to understand if any one is making use of the following features and if we should revisit them before 1.0. 1. Dictionaries can encode null values. - This become error prone for things like parquet. We seem to be calculating the definition level solely based on the null bitmap. I might h