distributed-database

"found" by the @discordapp troops the hard way: https://status.discordapp.com/incidents/62gt9cgjwdgf
pinging @zorkian who pointed it out to me.

trivial to repro, this is against a 3.3.13 on fedora-31.

$ etcdctl set /baa schnorp
$ etcdctl get /baa
schnorp
$ echo -ne 'PUT /v2/keys/baa HTTP/1.1\r\nHost: boo\r\nContent-Length: 123\r\n\r\n' | nc localhost 2379
HTTP/1.1 200 OK
...
$ et

cardinality returns the number of elements in the array. In Postgres, it's recursive, and counts each element in every dimension. Since CockroachDB only supports 1-dimensional arrays right now, the function is similar to array_len

See https://www.postgresql.org/docs/13/functions-array.html

Instructions:

• Add a built-in in https://github.com/cockroachdb/cockroach/blob/master/pkg/sql/sem

Please search TODO in class StandardBootstrapInitializerTest

fdbcli flags currently contain a mixture of _ and - (probably for historic reasons). I would propose to unify the flags and only use either _ or - personally I tend to hyphens like recommended in the POSXI standard (https://www.gnu.org/software/libc/manual/html_node/Argument-Syntax.html). Current fdbcli help output:

FoundationDB CLI 6.2 (v6.2.29)
usage: /usr/bin/fdb/6.2/fdbcli

Hello Philip!
I think there is an issue with this part of the code of rqlite (store/store.go).

func (s *Store) Database(leader bool) ([]byte, error) {
	if leader && s.raft.State() != raft.Leader {
		return nil, ErrNotLeader
	}
	// Ensure only one snapshot can take place at once, and block all queries.
	s.mu.Lock()
	defer s.mu.Unlock()

	f, err := ioutil.TempFile("", "rqlilte-snap-

currently, yb-ts-cli does not return any success message on the the completion of compaction.

 ./yb-ts-cli --server_address=<ip>:9100 compact_all_tablets

It would be nice addition if a user friendly message is added.

When you change a query state filter e.g. showing 'Finished' queries or 'User Error' queries, the Show Limit is not respected immediately resulting in all queries being rendered. If a re-order interval is set then Show Limit is applied on the next query refresh. If there are a large number of queries in the history this can result in the browser crashing on the first render.

The following two c

Use case:

1.) A user may want to backup all tables but no metadata like users, privileges, etc. without explicitly defining each table inside the CREATE SNAPSHOT statement.

2.) A user may want to transfer users & privileges, custom analyzers or user-defined-functions from one cluster to another without backing up a complete cluster including all data (tables).

*Feature description

Currently we don't have any mechanism to limit the maximum number of clients that could be handled simultaneously.

This feature should be designed properly. Here is some clue: https://redis.io/topics/clients#maximum-number-of-clients

Now that we support more than 1 data type, we should include the values data type in cache nodes. This give us a way of easily identifying what type of data a key points to e.g. string, queue (and more types in the future)

Currently a cache node object consists of a Key, a Value and a TTL. We should also add a field specifying the type of the Value