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_COORDINATOR
(prior to NDB 8.0.23: ADD_TABLE_MASTER
), ADD_TABLE_PARTICIPANT
(prior to NDB 8.0.23: 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 the table is currently being reorganized (1 if true)