Исправление неточностей

This commit is contained in:
2025-08-09 21:52:45 +03:00
parent f87c036dfc
commit efb573c62c
+23 -12
View File
@@ -56,7 +56,7 @@ git clone https://github.com/dementev-dev/clickhouse-learning-cluster
cd clickhouse-learning-cluster
# Запускаем кластер
docker compose up -d
docker compose up
# Проверяем статус
docker compose ps
@@ -140,19 +140,18 @@ ENGINE = Distributed(c2sh2rep, default, user_scores_local, user_id);
-- Генерируем тестовые данные
INSERT INTO user_scores
SELECT
number % 100000 + 1 AS user_id,
number % 10000000 + 1 AS user_id,
toFloat32(rand() % 50 + rand() % 50) / 10 AS avg_score,
now() - (number * 86400 / 1000) AS created_at
FROM numbers(100000);
FROM numbers(10000000);
-- Проверяем распределение данных по шардам
SELECT
_shard_num AS shard_num,
hostName() AS host,
count() AS rows
FROM clusterAllReplicas('c2sh2rep', 'default', 'user_scores_local')
GROUP BY _shard_num, host
ORDER BY _shard_num, host;
shardNum() AS shard_id,
count() AS rows_per_shard
FROM user_scores
GROUP BY shard_id
ORDER BY shard_id;
```
### Мониторинг репликации
@@ -160,15 +159,27 @@ ORDER BY _shard_num, host;
```sql
-- Состояние репликационных очередей
SELECT
hostName() AS host,
database,
table,
replica_name,
total_replicas,
active_replicas
FROM system.replicas;
active_replicas,
is_leader,
is_readonly
FROM clusterAllReplicas('c2sh2rep', 'system', 'replicas')
ORDER BY host, table;
-- Лог репликации
SELECT * FROM system.replication_queue LIMIT 10;
SELECT
hostName() AS host,
event_time,
table,
event_type, -- NewPart / MergeParts / DownloadPart и т.д.
part_name -- имя парты (универсальное поле)
FROM clusterAllReplicas('c2sh2rep', 'system', 'part_log')
ORDER BY event_time DESC
LIMIT 100;
```
## 🛠️ Структура проекта