MySQL 8.4 Reference Manual Including MySQL NDB Cluster 8.4
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
,
ADD_TABLE_PARTICIPANT
,
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)