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21.5.14.37 The ndbinfo table_fragments Table
The table_fragments
table provides information about the fragmentation, partitioning, distribution, and (internal) replication of NDB
tables.
The table_fragments
table contains the following columns:
node_id
Node ID (
DIH
master)table_id
Table ID
partition_id
Partition ID
fragment_id
Fragment ID (same as partition ID unless table is fully replicated)
partition_order
Order of fragment in partition
log_part_id
Log part ID of fragment
no_of_replicas
Number of replicas
current_primary
Current primary node ID
preferred_primary
Preferred primary node ID
current_first_backup
Current first backup node ID
current_second_backup
Current second backup node ID
current_third_backup
Current third backup node ID
num_alive_replicas
Current number of live replicas
num_dead_replicas
Current number of dead replicas
num_lcp_replicas
Number of replicas remaining to be checkpointed
Notes
The table_fragments
table was added in NDB 7.5.4.