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TokuDB Status Variables | MariaDB Documentation

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  • Error Codes
    • MariaDB Error Code Reference
    • Operating System Error Codes
    • MariaDB Error Codes 1000 to 1099
    • MariaDB Error Codes 1100 to 1199
    • MariaDB Error Codes 1200 to 1299
    • MariaDB Error Codes 1300 to 1399
    • MariaDB Error Codes 1400 to 1499
      • Error 1400: XAER_OUTSIDE: Some work is done outside global transaction
      • Error 1401: XAER_RMERR: Fatal error occurred in the transaction branch - check your data for consist
      • Error 1402: XA_RBROLLBACK: Transaction branch was rolled back
      • Error 1403: There is no such grant defined for user on host on routine
      • Error 1404: Failed to grant EXECUTE and ALTER ROUTINE privileges
      • Error 1405: Failed to revoke all privileges to dropped routine
      • Error 1406: Data too long for column at row
      • Error 1407: Bad SQLSTATE
      • Error 1408: ready for connections. Version: socket: port:
      • Error 1409: Can't load value from file with fixed size rows to variable
      • Error 1410: You are not allowed to create a user with GRANT
      • Error 1411: Incorrect value for function
      • Error 1412: Table definition has changed, please retry transaction
      • Error 1413: Duplicate handler declared in the same block
      • Error 1414: OUT or INOUT argument for routine is not a variable or NEW pseudo-variable in BEFORE tri
      • Error 1415: Not allowed to return a result set from
      • Error 1416: Cannot get geometry object from data you send to the GEOMETRY field
      • Error 1417: A routine failed and has neither NO SQL nor READS SQL DATA in its declaration
      • Error 1418: This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration an
      • Error 1419: You do not have the SUPER privilege and binary logging is enabled
      • Error 1420: You can't execute a prepared statement which has an open cursor associated with it
      • Error 1421: The statement has no open cursor
      • Error 1422: Explicit or implicit commit is not allowed in stored function or trigger
      • Error 1423: Field of view underlying table doesn't have a default value
      • Error 1424: Recursive stored functions and triggers are not allowed.
      • Error 1425: Too big scale specified for column
      • Error 1426: Too big precision specified for column
      • Error 1427: For float(M,D, double(M,D or decimal(M,D, M must be >= D
      • Error 1428: You can't combine write-locking of system tables with other tables or lock types
      • Error 1429: Unable to connect to foreign data source
      • Error 1430: There was a problem processing the query on the foreign data source
      • Error 1431: The foreign data source you are trying to reference does not exist
      • Error 1432: Can't create federated table. The data source connection string is not in the correct fo
      • Error 1433: The data source connection string is not in the correct format
      • Error 1434: Can't create federated table. Foreign data src error
      • Error 1435: Trigger in wrong schema
      • Error 1436: Thread stack overrun
      • Error 1437: Routine body is too long
      • Error 1438: Cannot drop default keycache
      • Error 1439: Display width out of range for column
      • Error 1440: XAER_DUPID: The XID already exists
      • Error 1441: Datetime function: field overflow
      • Error 1442: Can't update table in stored function/trigger because it is already used by statement wh
      • Error 1443: The definition of table prevents operation on table
      • Error 1444: The prepared statement contains a stored routine call that refers to that same statement
      • Error 1445: Not allowed to set autocommit from a stored function or trigger
      • Error 1446: Definer is not fully qualified
      • Error 1447: View has no definer information (old table format)
      • Error 1448: You need the SUPER privilege for creation view with definer
      • Error 1449: The user specified as a definer does not exist
      • Error 1450: Changing schema from is not allowed.
      • Error 1451: Cannot delete or update a parent row: a foreign key constraint fails
      • Error 1452: Cannot add or update a child row: a foreign key constraint fails
      • Error 1453: Variable must be quoted with ..., or renamed
      • Error 1454: No definer attribute for trigger
      • Error 1455: has an old format, you should re-create the object(s)
      • Error 1456: Recursive limit (as set by the max_sp_recursion_depth variable) was exceeded for routine
      • Error 1457: Failed to load routine
      • Error 1458: Incorrect routine name
      • Error 1459: Table upgrade required. Please do "REPAIR TABLE" or dump/reload to fix it!
      • Error 1460: AGGREGATE is not supported for stored functions
      • Error 1461: Can't create more than max_prepared_stmt_count statements
      • Error 1462: contains view recursion
      • Error 1463: Non-grouping field is used in clause
      • Error 1464: The used table type doesn't support SPATIAL indexes
      • Error 1465: Triggers can not be created on system tables
      • Error 1466: Leading spaces are removed from name
      • Error 1467: Failed to read auto-increment value from storage engine
      • Error 1468: user name
      • Error 1469: host name
      • Error 1470: String is too long for (should be no longer than )
      • Error 1471: The target table of the is not insertable-into
      • Error 1472: Table is differently defined or of non-MyISAM type or doesn't exist
      • Error 1473: Too high level of nesting for select
      • Error 1474: Name has become ''
      • Error 1475: First character of the FIELDS TERMINATED string is ambiguous
      • Error 1476: The foreign server you are trying to create already exists
      • Error 1477: The foreign server name you are trying to reference does not exist. Data source error
      • Error 1478: Table storage engine does not support the create option
      • Error 1479: Syntax error: PARTITIONING requires definition of VALUES for each partition
      • Error 1480: Only PARTITIONING can use VALUES in partition definition
      • Error 1481: MAXVALUE can only be used in last partition definition
      • Error 1482: Subpartitions can only be hash partitions and by key
      • Error 1483: Must define subpartitions on all partitions if on one partition
      • Error 1484: Wrong number of partitions defined, mismatch with previous setting
      • Error 1485: Wrong number of subpartitions defined, mismatch with previous setting
      • Error 1486: Constant/Random expression in (sub)partitioning function is not allowed
      • Error 1487: Expression in RANGE/LIST VALUES must be constant
      • Error 1488: Field in list of fields for partition function not found in table
      • Error 1489: List of fields is only allowed in KEY partitions
      • Error 1490: The partition info in the frm file is not consistent with what can be written into the f
      • Error 1491: The function returns the wrong type
      • Error 1492: For partitions each partition must be defined
      • Error 1493: VALUES LESS THAN value must be strictly increasing for each partition
      • Error 1494: VALUES value must be of same type as partition function
      • Error 1495: Multiple definition of same constant in list partitioning
      • Error 1496: Partitioning can not be used stand-alone in query
      • Error 1497: The mix of handlers in the partitions is not allowed in this version of MariaDB
      • Error 1498: For the partitioned engine it is necessary to define all
      • Error 1499: Too many partitions (including subpartitions) were defined
    • MariaDB Error Codes 1500 to 1599
    • MariaDB Error Codes 1600 to 1699
    • MariaDB Error Codes 1700 to 1799
    • MariaDB Error Codes 1800 to 1899
    • MariaDB Error Codes 1900 to 1999
    • MariaDB Error Codes 3000 to 3099
    • MariaDB Error Codes 4000 to 4099
    • MariaDB Error Codes 4100 to 4199
      • Error 4100: Field reference can't be used in table value constructor
      • Error 4101: Numeric datatype is required for function
      • Error 4102: Argument to the function is not a constant for a partition
      • Error 4103: Argument to the function does not belong to the range [0,1]
      • Error 4104: function only accepts arguments that can be converted to numerical types
      • Error 4105: Aggregate specific instruction (FETCH GROUP NEXT ROW) used in a wrong context
      • Error 4106: Aggregate specific instruction(FETCH GROUP NEXT ROW) missing from the aggregate function
      • Error 4107: Limit only accepts integer values
      • Error 4108: Invisible column must have a default value
      • Error 4109: Rows matched: Changed: Inserted: Warnings:
      • Error 4110: must be of type for system-versioned table
      • Error 4111: Transaction-precise system versioning for is not supported
      • Error 4112: You should never see it
      • Error 4113: Wrong partitioning type, expected type
      • Error 4114: Versioned table last HISTORY partition is out of, need more HISTORY partitions
      • Error 4115: Maybe missing parameters
      • Error 4116: Can only drop oldest partitions when rotating by INTERVAL
      • Error 4117: You should never see it
      • Error 4118: Partition contains non-historical data
      • Error 4119: Not allowed for system-versioned. Change @@system_versioning_alter_history to proceed wi
      • Error 4120: Not allowed for system-versioned. Change to/from native system versioning engine is not
      • Error 4121: SYSTEM_TIME range selector is not allowed
      • Error 4122: Conflicting FOR SYSTEM_TIME clauses in WITH RECURSIVE
      • Error 4123: Table must have at least one versioned column
      • Error 4124: Table is not system-versioned
      • Error 4125: Wrong parameters for: missing
      • Error 4126: PERIOD FOR SYSTEM_TIME must use columns
      • Error 4127: Wrong parameters for partitioned: wrong value for
      • Error 4128: Wrong partitions for: must have at least one HISTORY and exactly one last CURRENT
      • Error 4129: TRX_ID not found in mysql.transaction_registry
      • Error 4130: Can not change system versioning field
      • Error 4131: Can not DROP SYSTEM VERSIONING for table partitioned BY SYSTEM_TIME
      • Error 4132: System-versioned tables in the database are not supported
      • Error 4133: Transaction registry is disabled
      • Error 4134: Duplicate ROW column
      • Error 4135: Table is already system-versioned
      • Error 4136: You should never see it
      • Error 4137: System-versioned tables do not support
      • Error 4138: Transaction-precise system-versioned tables do not support partitioning by ROW START or
      • Error 4139: The index file for table is full
      • Error 4140: The column cannot be changed more than once in a single UPDATE statement
      • Error 4141: Row with no elements is not allowed in table value constructor in this context
      • Error 4142: SYSTEM_TIME partitions in table does not support historical query
      • Error 4143: index does not support this operation
      • Error 4144: Changing table options requires the table to be rebuilt
      • Error 4145: Can't execute the command as you have a BACKUP STAGE active
      • Error 4146: You must start backup with "BACKUP STAGE START"
      • Error 4147: Backup stage is same or before current backup stage
      • Error 4148: Backup stage failed
      • Error 4149: Unknown backup stage: Stage should be one of START, FLUSH, BLOCK_DDL, BLOCK_COMMIT or EN
      • Error 4150: User is blocked because of too many credential errors; unblock with 'FLUSH PRIVILEGES'
      • Error 4151: Access denied, this account is locked
      • Error 4152: Application-time period table cannot be temporary
      • Error 4153: Fields of PERIOD FOR have different types
      • Error 4154: Cannot specify more than one application-time period
      • Error 4155: Period field cannot be
      • Error 4156: Period is not found in table
      • Error 4157: Column used in period specified in update SET list
      • Error 4158: Can't DROP CONSTRAINT. Use DROP PERIOD for this
      • Error 4159: Specified key part was too long; max key part length is
      • Error 4160: Comment for database is too long
      • Error 4161: Unknown data type
      • Error 4162: Operator does not exists
      • Error 4163: Table history row start is later than row end
      • Error 4164: STARTS is later than query time, first history partition may exceed INTERVAL value
      • Error 4165: DDL-statement is forbidden as table storage engine does not support Galera replication
      • Error 4166: The used command is not allowed because the MariaDB server or client has disabled the lo
      • Error 4167: No secure transports are configured, unable to set --require_secure_transport=ON
      • Error 4168: Slave SQL thread ignored the '%s' because table is shared
      • Error 4169: AUTO_INCREMENT column cannot be used in the UNIQUE index
      • Error 4170: Key cannot explicitly include column
      • Error 4171: Key cannot have WITHOUT OVERLAPS
      • Error 4172: is not allowed in this context
      • Error 4173: Engine does not support rollback. Changes where commited during rollback call
      • Error 4174: A primary key cannot be marked as IGNORE
      • Error 4175: SKIP LOCKED makes this statement unsafe
      • Error 4176: Field can't be set for JSON_TABLE
      • Error 4177: Every table function must have an alias
      • Error 4178: Can't store an array or an object in the scalar column of JSON_TABLE
      • Error 4179: Can't store multiple matches of the path in the column of JSON_TABLE
      • Error 4180: FETCH ... WITH TIES requires ORDER BY clause to be present
      • Error 4181: Dropped orphan trigger, originally created for table
      • Error 4182: Storage engine is disabled
      • Error 4183: SFORMAT error
      • Error 4184: Convert partition is not supported for subpartitioned table
      • Error 4185: MariaDB tried to use the %s, but its provider plugin is not loaded
      • Error 4186: Failed to parse histogram for table at offset
      • Error 4187: OUT or INOUT argument for function is not allowed here
      • Error 4188: Replicated query table can not be temporary
      • Error 4189: Versioned table: adding HISTORY partition(s) failed
      • Error 4190: is implicitly changing the value of from to
      • Error 4191: CHANGE MASTER TO option is missing requirement
      • Error 4192: Slave log event execution was interrupted (slave_max_statement_time exceeded)
      • Error 4193: Invalid value for keyword
      • Error 4194: keyword is not supported
      • Error 4195: Variable schema is not supported
      • Error 4196: Pseudo thread id should not be modified by the client as it will be overwritten
      • Error 4197: Wrong number of columns
      • Error 4198: Sequence tables cannot have any keys
      • Error 4199: Sequence tables cannot have any constraints
    • MariaDB Error Codes 4200 to 4299
  • Client/Server Protocol

1. Server Usage
2. Storage Engines
3. TokuDB

TokuDB has been deprecated by its upstream maintainer. It is disabled from MariaDB 10.5 and has been removed in MariaDB 10.6 - MDEV-19780 . We recommend MyRocks as a long-term migration path.

This page documents status variables related to the TokuDB storage engine. See Server Status Variables for a complete list of status variables that can be viewed with SHOW STATUS.

See also the Full list of MariaDB options, system and status variables.

• Description: Number of deserialized basement nodes where all keys were the same size. This leaves the basement in an optimal format for in-memory workloads.

• Description: Number of deserialized basement nodes where all keys had different size keys, which are not eligible for in-memory optimization.

• Description: Number of basement nodes decompressed for write operations.

• Description: Number of basement nodes aggressively decompressed by queries.

• Description: Number of basement nodes decompressed for queries

• Description: Number of basement nodes fetched for writes off the disk.

• Description: Total basement node bytes fetched for writes off the disk.

• Description: Time in seconds spent waiting for IO while fetching basement nodes from disk for writes.

• Description: Number of basement nodes fetched off the disk by a prefetch thread.

• Description: Total basement node bytes fetched off the disk by a prefetch thread..

• Description: Time in seconds spent waiting for IO while fetching off the disk by a prefetch thread.

• Description: Number of basement nodes aggressively fetched from disk.

• Description: Total basement node bytes aggressively fetched off the disk.

• Description: Time in seconds spent waiting for IO while aggressively fetching basement nodes from disk.

• Description: Number of basement nodes fetched for queries off the disk.

• Description: Total basement node bytes fetched for queries off the disk.

• Description: Time in seconds spent waiting for IO while fetching basement nodes from disk for queries.

• Description: Number of broadcast messages injected at root.

• Description: Number of buffers decompressed for writes.

• Description: Number of buffers decompressed by a prefetch thread.

• Description: Number of buffers decompressed for queries.

• Description: Number of buffers aggressively decompressed by queries.

• Description: Number of buffers fetched for write off the disk.

• Description: Total buffer bytes fetched for writes off the disk.

• Description: Time in seconds spent waiting for IO while fetching buffers from disk for writes.

• Description: Number of buffers fetched for queries off the disk by a prefetch thread.

• Description: Total buffer bytes fetched for queries off the disk by a prefetch thread.

• Description: Time in seconds spent waiting for IO while fetching buffers from disk for queries by a prefetch thread.

• Description: Number of buffers aggressively fetched for queries off the disk.

• Description: Total buffer bytes aggressively fetched for queries off the disk.

• Description: Time in seconds spent waiting for IO while aggressively fetching buffers from disk for queries.

• Description: Number of buffers fetched for queries off the disk.

• Description: Total buffer bytes fetched for queries off the disk.

• Description: Time in seconds spent waiting for IO while fetching buffers from disk for queries.

• Description: Number of times the cleaner thread loop has executed.

• Description: Number of cleaner operations performed each cleaner period.

• Description: Time in seconds between the end of a group of cleaner operations and the beginning of the next. The TokuDB cleaner thread runs in the background, optimizing indexes and performing work not needing to be done by the client thread.

• Description: Number of blocks evicted from the cache.

• Description: Number of times a thread was stalled for more than one second due to cache pressure.

• Description: Time in microseconds spent waiting for more than one second for cache pressure to ease.

• Description: Number of times the system failed to access data in the internal cache.

• Description: Total time in microseconds spent waiting for disk reads (when the cache could not supply the data) to finish.

• Description: Total number of times that a block of memory was prefetched into the database cache. This happens when it's determined that a block of memory is likely to be accessed by the application.

• Description: Size in bytes of data causing cache pressure, or the sum of the buffers and workdone counters.

• Description: Memory in bytes currently used for cloned nodes. Dirty nodes are cloned before serialization/compression during checkpoint operations, after which they are written to disk and the memory freed for re-use.

• Description: Size in bytes of the uncompressed data in the cache.

• Description: Size in bytes of the leaf nodes in the cache.

• Description: Size in bytes of the uncompressed data that could fit in the cache.

• Description: Size in bytes of the nonleaf nodes in the cache.

• Description: Size in bytes of the rollback nodes in the cache.

• Description: Size in bytes currently queued to be written to disk.

• Description: Number of times a thread was stalled due to cache pressure.

• Description: Time in microseconds spent waiting for cache pressure to ease.

• Description: Cumulative time in microseconds needed to mark all dirty nodes as pending a checkpoint.

• Description: Time in seconds needed to complete all checkpoints.

• Description: Time in seconds needed to complete the last checkpoint.

• Description: Total number of checkpoints failed.

• Description: Date and time the most recent checkpoint began, for example Wed May 14 11:26:42 2014 Will be Dec 31, 1969 on Linux if no checkpoint has ever begun.

• Description: Date and time the last complete checkpoint started.

• Description: Date and time the last complete checkpoint ended.

• Description: Number of long checkpoint begins (checkpoint begins taking more than 1 second).

• Description: Total time in microseconds of long checkpoint begins (checkpoint begins taking more than 1 second).

• Description: Time in seconds between the end of one automatic checkpoint and the beginning of the next.

• Description: Total number of checkpoints taken.

• Description: Deleted leaf entries skipped during a range scan.

• Description: Number of db_close operations.

• Description: Number of databases currently open.

• Description: Maximum of number of databases open at the same time.

• Description: Number of db_open operations.

• Description: Number of times a descriptor was updated when the entire dictionary was updated.

• Description: Number of successful broadcast updates (an update that affects all rows in a dictionary).

• Description: Total number of rows updated in all primary and secondary indexes that have been done with a separate recovery log entry per index.

• Description: Total number of times the database has flushed the operating system’s file buffers to disk.

• Description: Total time in microseconds used to fsync to disk.

• Description: Total number of times the database has flushed the operating system’s file buffers to disk when the operation took more than one second.

• Description: Total time in microseconds used to fsync to disk when the operation took more than one second.

• Description: Number of threads currently blocked due to attempting to write to a full disk. A warning appears in the disk free space field if not zero.

• Description: Time in seconds spent on compressing leaf nodes.

• Description: Time in seconds spent on decompressing leaf nodes.

• Description: Time in seconds spent on deserializing leaf nodes.

• Description: Ratio of uncompressed bytes in-memory to compressed bytes on-disk for leaf nodes.

• Description: Number of times a full leaf node was evicted from the cache.

• Description: Total bytes freed when a full leaf node was evicted from the cache.

• Description: Number of times part of a leaf node (a partition) was evicted from the cache.

• Description: Total bytes freed when part of a leaf node (a partition) was evicted from the cache.

• Description: Total number of leaf nodes created.

• Description: Total number of leaf nodes destroyed.

• Description: Number of leaf nodes flushed to disk as part of a checkpoint.

• Description: Size in bytes of leaf nodes flushed to disk as part of a checkpoint.

• Description: Time in seconds spent waiting for IO while writing leaf nodes flushed to disk as part of a checkpoint.

• Description: Size in uncompressed bytes of leaf nodes flushed to disk as part of a checkpoint.

• Description: Number of leaf nodes flushed to disk not as part of a checkpoint.

• Description: Size in bytes of leaf nodes flushed to disk not as part of a checkpoint.

• Description: Time in seconds spent waiting for IO while writing leaf nodes flushed to disk not as part of a checkpoint.

• Description: Size in uncompressed bytes of leaf nodes flushed to disk not as part of a checkpoint.

• Description: Time in seconds spent on serializing leaf nodes.

• Description: Number of times a loader has been created.

• Description: Number of currently existing loaders.

• Description: Maximum number of loaders that existed at one time.

• Description: Number of times the locktree needed reduce its memory footprint by running lock escalation.

• Description: Time in seconds spent performing locktree escalation.

• Description: Memory size in bytes of the locktree after most recent locktree escalation.

• Description: Number of times of more than one second duration that a lock could not be acquired as a result of a conflict with another transaction.

• Description: Number of times a client thread waited for more than one second for lock escalation to free up memory.

• Description: Time in microseconds of long waits (more than one second) for lock escalation to free up memory.

• Description:Total time in microseconds spent by clients waiting for more than one second for a lock conflict to be resolved.

• Description: Memory in bytes currently being used by the locktree.

• Description: Maximum memory in bytes the locktree can use.

• Description: Number of currently open locktrees.

• Description: Number of requests waiting for a lock to be granted.

• Description: Number of locktrees eligible for single transaction optimizations.

• Description: Total number of times a single transaction optimization completed early as a result of another transaction beginning.

• Description: Time in seconds spent ending single transaction optimizations.

• Description: Number of times a lock request timed out.

• Description: Number of times a lock could not be acquired as a result of a conflict with another transaction.

• Description: Number of times a client thread has waited on lock escalation. Lock escalation is run on a background thread when the sum of the acquired lock sizes reaches the lock tree limit.

• Description: Time in microseconds that a client thread spent waiting for lock escalation.

• Description: Total time in microseconds spent by clients waiting for a lock conflict to be resolved.

• Description: Number of times the logger has written to disk.

• Description: Total bytes the logger has written to disk.

• Description: Time in seconds spent waiting for IO while writing logs to disk.

• Description: Total uncompressed bytes the logger has written to disk.

• Description: Total bytes of the messages flushed from h1 nodes to leaves.

• Description: Number of messages ignored by a leaf because it had already been applied.

• Description: Estimate of the total bytes of messages currently in trees.

• Description: Number of messages injected at root.

• Description: Total bytes of messages injected at root for all trees.

• Description: Time in seconds spent on compressing non-leaf nodes.

• Description: Time in seconds spent on decompressing non-leaf nodes.

• Description: Time in seconds spent on deserializing non-leaf nodes.

• Description: Ratio of uncompressed bytes in-memory to compressed bytes on-disk for nonleaf nodes.

• Description: Number of times a full non-leaf node was evicted from the cache.

• Description: Total bytes freed when a full non-leaf node was evicted from the cache.

• Description: Number of times part of a non-leaf node (a partition) was evicted from the cache.

• Description: Total bytes freed when part of a non-leaf node (a partition) was evicted from the cache.

• Description: Total number of non-leaf nodes created.

• Description: Total number of non-leaf nodes destroyed.

• Description: Number of non-leaf nodes flushed to disk as part of a checkpoint.

• Description: Size in bytes of non-leaf nodes flushed to disk as part of a checkpoint.

• Description: Time in seconds spent waiting for IO while writing non-leaf nodes flushed to disk as part of a checkpoint.

• Description: Size in uncompressed bytes of non-leaf nodes flushed to disk as part of a checkpoint.

• Description: Number of non-leaf nodes flushed to disk not as part of a checkpoint.

• Description: Size in bytes of non-leaf nodes flushed to disk not as part of a checkpoint.

• Description: Time in seconds spent waiting for IO while writing non-leaf nodes flushed to disk not as part of a checkpoint.

• Description: Size in uncompressed bytes of non-leaf nodes flushed to disk not as part of a checkpoint.

• Description: Time in seconds spent on serializing nonleaf nodes.

• Description: Ratio of uncompressed bytes in-memory to compressed bytes on-disk for all nodes.

• Description: Total number of pivot nodes fetched for queries.

• Description: Number of bytes of pivot nodes fetched for queries.

• Description: Time in seconds spent waiting for IO while fetching pivot nodes for queries.

• Description: Total number of pivot nodes fetched by a prefetch thread.

• Description: Number of bytes of pivot nodes fetched by a prefetch thread.

• Description: Time in seconds spent waiting for IO while fetching pivot nodes by a prefetch thread.

• Description: Total number of pivot nodes fetched for writes.

• Description: Number of bytes of pivot nodes fetched for writes.

• Description: Time in seconds spent waiting for IO while fetching pivot nodes for writes.

• Description: Number of times a message stopped at a root with a height of 1.

• Description: Number of times a message stopped at a depth of zero.

• Description: Number of times a message stopped at a depth of one.

• Description: Number of times a message stopped at a depth of two.

• Description: Number of times a message stopped at a depth of three.

• Description: Number of times a message stopped at a depth of greater than three.

• Description: Number of times a message stopped at a root with a height of 0.

• Description: Number of times the root split during promotion.

• Description: Number of times a message stopped before a locked child.

• Description: Number of times a message stopped due to reaching a height of one.

• Description: Number of times a message stopped due to being unable to cheaply access (locked or not stored in memory) a child.

• Description: Number of times a message stopped due to being unable to cheaply access (not fully stored in memory) a child.

• Description: Number of times a message stopped due to reaching a buffer that wasn't empty.

• Description: Number of transactions that have been aborted.

• Description: Number of transactions that have been started.

• Description: Number of read-only transactions that have been started.

• Description: Number of transactions that have been committed.

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