21.6.15.36 The ndbinfo table_distribution_status Table

The table_distribution_status table provides information about the progress of table distribution for NDB tables.

The table_distribution_status table contains the following columns:

• node_id

  Node id

• table_id

  Table ID

• tab_copy_status

  Status of copying of table distribution data to disk; one of IDLE, SR_PHASE1_READ_PAGES, SR_PHASE2_READ_TABLE, SR_PHASE3_COPY_TABLE, REMOVE_NODE, LCP_READ_TABLE, COPY_TAB_REQ, COPY_NODE_STATE, ADD_TABLE_MASTER, ADD_TABLE_SLAVE, INVALIDATE_NODE_LCP, ALTER_TABLE, COPY_TO_SAVE, or GET_TABINFO

• tab_update_status

  Status of updating of table distribution data; one of IDLE, LOCAL_CHECKPOINT, LOCAL_CHECKPOINT_QUEUED, REMOVE_NODE, COPY_TAB_REQ, ADD_TABLE_MASTER, ADD_TABLE_SLAVE, INVALIDATE_NODE_LCP, or CALLBACK

• tab_lcp_status

  Status of table LCP; one of ACTIVE (waiting for local checkpoint to be performed), WRITING_TO_FILE (checkpoint performed but not yet written to disk), or COMPLETED (checkpoint performed and persisted to disk)

• tab_status

  Table internal status; one of ACTIVE (table exists), CREATING (table is being created), or DROPPING (table is being dropped)

• tab_storage

  Table recoverability; one of NORMAL (fully recoverable with redo logging and checkpointing), NOLOGGING (recoverable from node crash, empty following cluster crash), or TEMPORARY (not recoverable)

• tab_partitions

  Number of partitions in table

• tab_fragments

  Number of fragments in table; normally same as tab_partitions; for fully replicated tables equal to tab_partitions * [number of node groups]

• current_scan_count

  Current number of active scans

• scan_count_wait

  Current number of scans waiting to be performed before ALTER TABLE can complete.

• is_reorg_ongoing

  Whether table is currently being reorganized (1 if true)

Notes

The table_distribution_status table was added in NDB 7.5.4.