ClickHouse/docs/en/operations/system-tables/moves.md

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/en/operations/system-tables/moves

moves

The table contains information about in-progress data part moves of MergeTree tables. Each data part movement is represented by a single row.

Columns:

• database (String) — Name of the database.

• table (String) — Name of the table containing moving data part.

• elapsed (Float64) — Time elapsed (in seconds) since data part movement started.

• target_disk_name (String) — Name of disk to which the data part is moving.

• target_disk_path (String) — Path to the mount point of the disk in the file system.

• part_name (String) — Name of the data part being moved.

• part_size (UInt64) — Data part size.

• thread_id (UInt64) — Identifier of a thread performing the movement.

Example

SELECT * FROM system.moves

┌─database─┬─table─┬─────elapsed─┬─target_disk_name─┬─target_disk_path─┬─part_name─┬─part_size─┬─thread_id─┐
│ default  │ test2 │ 1.668056039 │ s3               │ ./disks/s3/      │ all_3_3_0 │       136 │    296146 │
└──────────┴───────┴─────────────┴──────────────────┴──────────────────┴───────────┴───────────┴───────────┘

See Also

• MergeTree table engine
• Using Multiple Block Devices for Data Storage
• ALTER TABLE ... MOVE PART command