3c82a8a2ff
This commit is a first step towards documenting system.* tables. It contains information about system.large_partitions table. References #3292
770 B
770 B
System keyspace layout
This section describes layouts and usage of system.* tables.
system.large_partitions
Large partition table can be used to trace largest partitions in a cluster.
Schema:
CREATE TABLE large_partitions (
keyspace_name text,
table_name tex,
sstable_name text,
partition_size bigint,
key text,
compaction_time timestamp,
PRIMARY KEY((keyspace_name, table_name), sstable_name, partition_size, key)
) WITH CLUSTERING ORDER BY (partition_size DESC);
Example usage
Extracting large partitions info
SELECT * FROM system.large_partitions;
Extracting large partitions info for a single table
SELECT * FROM system.large_partitions WHERE sstable_name = 'ks1.standard1';