distributed-database

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

create database db;
use db;
rename table tb1 to tb2;

2. What did you expect to see? (Required)

MySQL 5.7
ERROR 1017 (HY000): Can't find file: './db_optimistic/tb1.frm' (errno: 2 - No suc

Currently, tree.NotExpr is not implemented natively in the vectorized engine, so we have to fallback to the older row-by-row engine to evaluate it. We should, instead, vectorize NotExpr.

I think the implementation will be quite similar to how tree.IsNullExpr is implemented, and I think we will want to implement two versions of NotExpr operator:

• one for projections, which populates a

Hi community,

I found shardingsphere-db-discovery-mgr module need to add unit test. it 's task list :

• MGRDatabaseDiscoveryType.startPeriodicalUpdate()
• MGRDatabaseDiscoveryType.updateProperties()

Calling setclass in fdbcli will try to change any process that matches the process filter given. If no processes are found, it silently does nothing. Instead, it should report back to the user that no processes matched the given filter.

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-

Description

There are two logs that show the index backfill postgres connection's authentication key (password):

• a VLOG(1) in ConnectToPostgres that happens each call
• a LOG(WARNING) in ConnectToPostgres that happens only on bad connections

Ideally, this should not be visible in logs. It isn't a huge threat because, to use the auth key, you would need to use the yb-tserver-

With Hive connector

trino:default> CREATE TABLE one (a varchar);
            -> CREATE VIEW two AS SELECT * FROM one;
CREATE TABLE
CREATE VIEW

DROP TABLE is rejected on a view:

trino:default> DROP TABLE two;
Query 20210906_150832_00015_id3y3 failed: line 1:1: Table 'hive.default.two' does not exist, but a view with that name exists. Did you mean DROP VIEW hive.default.t

Use case:

Adding an array element to an existing array inside the database without the need to select the array first and update the full array value afterwards.

CREATE TABLE t1 (id INTEGER, tags ARRAY(TEXT));
INSERT INTO t1 (id, tags) VALUES (1, ['database']);

UPDATE t1 SET
  tags = array_append(excluded.tags, 'search engine');
WHERE id = 1;

**Feature descr

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