Useful queries

Check table metadata in zookeeper

Check table metadata in zookeeper.

Debug hunging thing

Debug hunging / freezing things

Handy queries for a system.query_log

Handy queries for a system.query_log.

Ingestion metrics from system.part_log

Query to gather information about ingestion rate from system.part_log.

Can detached parts be dropped?

Database Size - Table - Column size

Datasets

Number of active parts in a partition

Parts consistency