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1.4 KiB
1.4 KiB
slug |
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/en/operations/system-tables/merges |
merges
Contains information about merges and part mutations currently in process for tables in the MergeTree family.
Columns:
database
(String) — The name of the database the table is in.table
(String) — Table name.elapsed
(Float64) — The time elapsed (in seconds) since the merge started.progress
(Float64) — The percentage of completed work from 0 to 1.num_parts
(UInt64) — The number of pieces to be merged.result_part_name
(String) — The name of the part that will be formed as the result of merging.is_mutation
(UInt8) — 1 if this process is a part mutation.total_size_bytes_compressed
(UInt64) — The total size of the compressed data in the merged chunks.total_size_marks
(UInt64) — The total number of marks in the merged parts.bytes_read_uncompressed
(UInt64) — Number of bytes read, uncompressed.rows_read
(UInt64) — Number of rows read.bytes_written_uncompressed
(UInt64) — Number of bytes written, uncompressed.rows_written
(UInt64) — Number of rows written.memory_usage
(UInt64) — Memory consumption of the merge process.thread_id
(UInt64) — Thread ID of the merge process.merge_type
— The type of current merge. Empty if it's an mutation.merge_algorithm
— The algorithm used in current merge. Empty if it's an mutation.