The dump_meta_data sql script used an external call to date to get
the current data which does not work on windows. This patch changes
the script to use now() instead to get the current time and date.
Fixes#3674
Bump year in copyright information to 2022 and adjust same scripts
to reference NOTICE that didn't have the reference yet.
This patch also removes orphaned test/expected/utils.out.
Some tests contain code that only work if the build is based on a Git
clone, which caused these tests to fail when Git was not available.
This commit splits out those tests and only enabling them if Git is
found and Git information can be retrieved.
This change refactors the chunk index handling to make better use
of standard PostgreSQL catalog information, while removing the
hypertable_index metadata table and associated triggers, including
those on the chunk_index table. The chunk_index table itself is
also simplified.
A benefit of this refactoring is that indexes are no longer
created using string mangling to construct the CREATE INDEX command
for a chunk, based on the string definition of the hypertable
index. Instead, indexes are created in C using proper index-related
internal data structures.
Chunk indexes can now also be renamed and are added in the parent
index tablespace. Changing tablespace on a hypertable index also
recurses to chunks, as expected. Default indexes that are added when
creating a hypertable use the hypertable's tablespace.
Creating Hypertable indexes with the CONCURRENTLY modifier is
currently blocked, due to unclear semantics regarding concurrent
creation over many tables, including how to deal with snapshots.
