system.merges

Contains information about merges currently in process for tables in the MergeTree family.

Columns:

database String — Name of the database the table is located in.
table String — Name of the table.
elapsed Float64 — Time in seconds since the merge started.
progress Float64 — Percent of progress made, from 0 to 1.
num_parts UInt64 — Number of parts to merge.
result_part_name String — Name of the part that will be formed as the result of the merge.
total_size_bytes_compressed UInt64 — Total size of compressed data in the parts being merged.
total_size_marks UInt64 — Total number of marks in the parts being merged.
bytes_read_uncompressed UInt64 — Amount of bytes read, decompressed.
rows_read UInt64 — Number of rows read.
bytes_written_uncompressed UInt64 — Amount of bytes written, uncompressed.
rows_written UInt64 — Number of rows written.