Allow dropping any column in a table. Previously, dropping columns other
than the last one would fail with ConcurrentModificationException.
Correctly write files for text format tables that use non-default delimiters.
Previously, they were written with the default delimiter.
Fix reading data from S3 if the data is in a region other than us-east-1.
Previously, such queries would fail with
where <region_name> is the S3 region hosting the bucket that is queried.
Enable SHOWPARTITIONSFROM<table>WHERE<condition> to work for tables
that have more than hive.max-partitions-per-scan partitions as long as
the specified <condition> reduces the number of partitions to below this limit.