System Views

GridGain provides a number of built-in SQL views that contain information about cluster nodes and node metrics. These views are available in the SYS schema. See the Understanding Schemas page for the information on how to access a non-default schema.

NODES

The NODES view contains information about the cluster nodes.

Column	Data Type	Description
NODE_ID	UUID	Node ID.
CONSISTENT_ID	VARCHAR	Node’s consistent ID.
VERSION	VARCHAR	Node version.
IS_CLIENT	BOOLEAN	Indicates whether the node is a client.
IS_DAEMON	BOOLEAN	Indicates whether the node is a daemon node.
NODE_ORDER	INT	Node order within the topology.
ADDRESSES	VARCHAR	The addresses of the node.
HOSTNAMES	VARCHAR	The host names of the node.

Column

Data Type

Description

NODE_ID

UUID

Node ID.

CONSISTENT_ID

VARCHAR

Node’s consistent ID.

VERSION

VARCHAR

Node version.

IS_CLIENT

BOOLEAN

Indicates whether the node is a client.

IS_DAEMON

BOOLEAN

Indicates whether the node is a daemon node.

NODE_ORDER

INT

Node order within the topology.

ADDRESSES

VARCHAR

The addresses of the node.

HOSTNAMES

VARCHAR

The host names of the node.

NODE_ATTRIBUTES

The NODE_ATTRIBUTES view contains the attributes of all nodes.

Column	Data Type	Description
NODE_ID	UUID	Node ID.
NAME	VARCHAR	Attribute name.
VALUE	VARCHAR	Attribute value.

Column

Data Type

Description

NODE_ID

UUID

Node ID.

NAME

VARCHAR

Attribute name.

VALUE

VARCHAR

Attribute value.

BASELINE_NODES

The BASELINE_NODES view contains information about the nodes that are part of the current baseline topology.

Column	Data Type	Description
CONSISTENT_ID	VARCHAR	Node consistent ID.
ONLINE	BOOLEAN	Indicates whether the node is up and running.

Column

Data Type

Description

CONSISTENT_ID

VARCHAR

Node consistent ID.

ONLINE

BOOLEAN

Indicates whether the node is up and running.

NODE_METRICS

The NODE_METRICS view provides various metrics about the state of nodes, resource consumption and other metrics.

Column Data Type Description

Column	Data Type	Description
NODE_ID	UUID	Node ID.
LAST_UPDATE_TIME	TIMESTAMP	Last time the metrics were updated.
MAX_ACTIVE_JOBS	INT	Maximum number of concurrent jobs this node ever had at one time.
CUR_ACTIVE_JOBS	INT	Number of currently active jobs running on the node.
AVG_ACTIVE_JOBS	FLOAT	Average number of active jobs concurrently executing on the node.
MAX_WAITING_JOBS	INT	Maximum number of waiting jobs this node ever had at one time.
CUR_WAITING_JOBS	INT	Number of queued jobs currently waiting to be executed.
AVG_WAITING_JOBS	FLOAT	Average number of waiting jobs this node ever had at one time.
MAX_REJECTED_JOBS	INT	Maximum number of jobs rejected at once during a single collision resolution operation.
CUR_REJECTED_JOBS	INT	Number of jobs rejected as a result of the most recent collision resolution operation.
AVG_REJECTED_JOBS	FLOAT	Average number of jobs this node rejected as a result of collision resolution operations.
TOTAL_REJECTED_JOBS	INT	Total number of jobs this node has rejected as a result of collision resolution operations since the node startup.
MAX_CANCELED_JOBS	INT	Maximum number of cancelled jobs this node ever had running concurrently.
CUR_CANCELED_JOBS	INT	Number of cancelled jobs that are still running.
AVG_CANCELED_JOBS	FLOAT	Average number of cancelled jobs this node ever had running concurrently.
TOTAL_CANCELED_JOBS	INT	Number of jobs cancelled since the node startup.
MAX_JOBS_WAIT_TIME	TIME	Maximum time a job ever spent waiting in a queue before being executed.
CUR_JOBS_WAIT_TIME	TIME	Longest wait time among the jobs that are currently waiting for execution.
AVG_JOBS_WAIT_TIME	TIME	Average time jobs spend in the queue before being executed.
MAX_JOBS_EXECUTE_TIME	TIME	Maximum job execution time.
CUR_JOBS_EXECUTE_TIME	TIME	Longest time a current job has been executing for.
AVG_JOBS_EXECUTE_TIME	TIME	Average job execution time on this node.
TOTAL_JOBS_EXECUTE_TIME	TIME	Total time all finished jobs took to execute on this node since the node startup.
TOTAL_EXECUTED_JOBS	INT	Total number of jobs handled by the node since the node startup.
TOTAL_EXECUTED_TASKS	INT	Total number of tasks handled by the node.
TOTAL_BUSY_TIME	TIME	Total time this node spent executing jobs.
TOTAL_IDLE_TIME	TIME	Total time this node spent idling (not executing any jobs).
CUR_IDLE_TIME	TIME	Time this node has spent idling since executing the last job.
BUSY_TIME_PERCENTAGE	FLOAT	Percentage of job execution vs idle time.
IDLE_TIME_PERCENTAGE	FLOAT	Percentage of idle vs job execution time.
TOTAL_CPU	INT	Number of CPUs available to the Java Virtual Machine.
CUR_CPU_LOAD	DOUBLE	Percentage of CPU usage expressed as a fraction in the range [0, 1].
AVG_CPU_LOAD	DOUBLE	Average percentage of CPU usage expressed as a fraction in the range [0, 1].
CUR_GC_CPU_LOAD	DOUBLE	Average time spent in GC since the last update of the metrics. By default, metrics are updated every 2 seconds.
HEAP_MEMORY_INIT	LONG	Amount of heap memory in bytes that the JVM initially requests from the operating system for memory management. Shows `-1` if the initial memory size is undefined.
HEAP_MEMORY_USED	LONG	Current heap size that is used for object allocation. The heap consists of one or more memory pools. This value is the sum of used heap memory values of all heap memory pools.
HEAP_MEMORY_COMMITED	LONG	Amount of heap memory in bytes that is committed for the JVM to use. This amount of memory is guaranteed for the JVM to use. The heap consists of one or more memory pools. This value is the sum of committed heap memory values of all heap memory pools.
HEAP_MEMORY_MAX	LONG	Maximum amount of heap memory in bytes that can be used for memory management. The column displays `-1` if the maximum memory size is undefined.
HEAP_MEMORY_TOTAL	LONG	Total amount of heap memory in bytes. The column displays `-1` if the total memory size is undefined.
NONHEAP_MEMORY_INIT	LONG	Amount of non-heap memory in bytes that the JVM initially requests from the operating system for memory management. The column displays `-1` if the initial memory size is undefined.
NONHEAP_MEMORY_USED	LONG	Current non-heap memory size that is used by Java VM. The non-heap memory consists of one or more memory pools. This value is the sum of used non-heap memory values of all non-heap memory pools.
NONHEAP_MEMORY_COMMITED	LONG	Amount of non-heap memory in bytes that is committed for the JVM to use. This amount of memory is guaranteed for the JVM to use. The non-heap memory consists of one or more memory pools. This value is the sum of committed non-heap memory values of all non-heap memory pools.
NONHEAP_MEMORY_MAX	LONG	Returns the maximum amount of non-heap memory in bytes that can be used for memory management. The column displays `-1` if the maximum memory size is undefined.
NONHEAP_MEMORY_TOTAL	LONG	Total amount of non-heap memory in bytes that can be used for memory management. The column displays `-1` if the total memory size is undefined.
UPTIME	TIME	Uptime of the JVM.
JVM_START_TIME	TIMESTAMP	Start time of the JVM.
NODE_START_TIME	TIMESTAMP	Start time of the node.
LAST_DATA_VERSION	LONG	In-Memory Data Grid assigns incremental versions to all cache operations. This column contains the latest data version on the node.
CUR_THREAD_COUNT	INT	Number of live threads including both daemon and non-daemon threads.
MAX_THREAD_COUNT	INT	Maximum live thread count since the JVM started or peak was reset.
TOTAL_THREAD_COUNT	LONG	Total number of threads started since the JVM started.
CUR_DAEMON_THREAD_COUNT	INT	Number of live daemon threads.
SENT_MESSAGES_COUNT	INT	Number of node communication messages sent.
SENT_BYTES_COUNT	LONG	Amount of bytes sent.
RECEIVED_MESSAGES_COUNT	INT	Number of node communication messages received.
RECEIVED_BYTES_COUNT	LONG	Amount of bytes received.
OUTBOUND_MESSAGES_QUEUE	INT	Outbound messages queue size.

NODE_ID

UUID

Node ID.

LAST_UPDATE_TIME

TIMESTAMP

Last time the metrics were updated.

MAX_ACTIVE_JOBS

INT

Maximum number of concurrent jobs this node ever had at one time.

CUR_ACTIVE_JOBS

INT

Number of currently active jobs running on the node.

AVG_ACTIVE_JOBS

FLOAT

Average number of active jobs concurrently executing on the node.

MAX_WAITING_JOBS

INT

Maximum number of waiting jobs this node ever had at one time.

CUR_WAITING_JOBS

INT

Number of queued jobs currently waiting to be executed.

AVG_WAITING_JOBS

FLOAT

Average number of waiting jobs this node ever had at one time.

MAX_REJECTED_JOBS

INT

Maximum number of jobs rejected at once during a single collision resolution operation.

CUR_REJECTED_JOBS

INT

Number of jobs rejected as a result of the most recent collision resolution operation.

AVG_REJECTED_JOBS

FLOAT

Average number of jobs this node rejected as a result of collision resolution operations.

TOTAL_REJECTED_JOBS

INT

Total number of jobs this node has rejected as a result of collision resolution operations since the node startup.

MAX_CANCELED_JOBS

INT

Maximum number of cancelled jobs this node ever had running concurrently.

CUR_CANCELED_JOBS

INT

Number of cancelled jobs that are still running.

AVG_CANCELED_JOBS

FLOAT

Average number of cancelled jobs this node ever had running concurrently.

TOTAL_CANCELED_JOBS

INT

Number of jobs cancelled since the node startup.

MAX_JOBS_WAIT_TIME

TIME

Maximum time a job ever spent waiting in a queue before being executed.

CUR_JOBS_WAIT_TIME

TIME

Longest wait time among the jobs that are currently waiting for execution.

AVG_JOBS_WAIT_TIME

TIME

Average time jobs spend in the queue before being executed.

MAX_JOBS_EXECUTE_TIME

TIME

Maximum job execution time.

CUR_JOBS_EXECUTE_TIME

TIME

Longest time a current job has been executing for.

AVG_JOBS_EXECUTE_TIME

TIME

Average job execution time on this node.

TOTAL_JOBS_EXECUTE_TIME

TIME

Total time all finished jobs took to execute on this node since the node startup.

TOTAL_EXECUTED_JOBS

INT

Total number of jobs handled by the node since the node startup.

TOTAL_EXECUTED_TASKS

INT

Total number of tasks handled by the node.

TOTAL_BUSY_TIME

TIME

Total time this node spent executing jobs.

TOTAL_IDLE_TIME

TIME

Total time this node spent idling (not executing any jobs).

CUR_IDLE_TIME

TIME

Time this node has spent idling since executing the last job.

BUSY_TIME_PERCENTAGE

FLOAT

Percentage of job execution vs idle time.

IDLE_TIME_PERCENTAGE

FLOAT

Percentage of idle vs job execution time.

TOTAL_CPU

INT

Number of CPUs available to the Java Virtual Machine.

CUR_CPU_LOAD

DOUBLE

Percentage of CPU usage expressed as a fraction in the range [0, 1].

AVG_CPU_LOAD

DOUBLE

Average percentage of CPU usage expressed as a fraction in the range [0, 1].

CUR_GC_CPU_LOAD

DOUBLE

Average time spent in GC since the last update of the metrics. By default, metrics are updated every 2 seconds.

HEAP_MEMORY_INIT

LONG

Amount of heap memory in bytes that the JVM initially requests from the operating system for memory management. Shows -1 if the initial memory size is undefined.

HEAP_MEMORY_USED

LONG

Current heap size that is used for object allocation. The heap consists of one or more memory pools. This value is the sum of used heap memory values of all heap memory pools.

HEAP_MEMORY_COMMITED

LONG

Amount of heap memory in bytes that is committed for the JVM to use. This amount of memory is guaranteed for the JVM to use. The heap consists of one or more memory pools. This value is the sum of committed heap memory values of all heap memory pools.

HEAP_MEMORY_MAX

LONG

Maximum amount of heap memory in bytes that can be used for memory management. The column displays -1 if the maximum memory size is undefined.

HEAP_MEMORY_TOTAL

LONG

Total amount of heap memory in bytes. The column displays -1 if the total memory size is undefined.

NONHEAP_MEMORY_INIT

LONG

Amount of non-heap memory in bytes that the JVM initially requests from the operating system for memory management. The column displays -1 if the initial memory size is undefined.

NONHEAP_MEMORY_USED

LONG

Current non-heap memory size that is used by Java VM. The non-heap memory consists of one or more memory pools. This value is the sum of used non-heap memory values of all non-heap memory pools.

NONHEAP_MEMORY_COMMITED

LONG

Amount of non-heap memory in bytes that is committed for the JVM to use. This amount of memory is guaranteed for the JVM to use. The non-heap memory consists of one or more memory pools. This value is the sum of committed non-heap memory values of all non-heap memory pools.

NONHEAP_MEMORY_MAX

LONG

Returns the maximum amount of non-heap memory in bytes that can be used for memory management. The column displays -1 if the maximum memory size is undefined.

NONHEAP_MEMORY_TOTAL

LONG

Total amount of non-heap memory in bytes that can be used for memory management. The column displays -1 if the total memory size is undefined.

UPTIME

TIME

Uptime of the JVM.

JVM_START_TIME

TIMESTAMP

Start time of the JVM.

NODE_START_TIME

TIMESTAMP

Start time of the node.

LAST_DATA_VERSION

LONG

In-Memory Data Grid assigns incremental versions to all cache operations. This column contains the latest data version on the node.

CUR_THREAD_COUNT

INT

Number of live threads including both daemon and non-daemon threads.

MAX_THREAD_COUNT

INT

Maximum live thread count since the JVM started or peak was reset.

TOTAL_THREAD_COUNT

LONG

Total number of threads started since the JVM started.

CUR_DAEMON_THREAD_COUNT

INT

Number of live daemon threads.

SENT_MESSAGES_COUNT

INT

Number of node communication messages sent.

SENT_BYTES_COUNT

LONG

Amount of bytes sent.

RECEIVED_MESSAGES_COUNT

INT

Number of node communication messages received.

RECEIVED_BYTES_COUNT

LONG

Amount of bytes received.

OUTBOUND_MESSAGES_QUEUE

INT

Outbound messages queue size.

TABLES

The TABLES view contains information about the SQL tables.

Column	Data Type	Description
CACHE_GROUP_ID	INT	The id of the cache group.
CACHE_GROUP_NAME	VARCHAR	The name of the cache group.
CACHE_ID	INT	The ID of the cache corresponding to the table.
CACHE_NAME	VARCHAR	The name of the cache corresponding to the table.
SCHEMA_NAME	VARCHAR	The name of the schema.
TABLE_NAME	VARCHAR	The name of the table.
AFFINITY_KEY_COLUMN	VARCHAR	The column that is used as the affinity key.
KEY_ALIAS	VARCHAR	The alias for the key fields.
VALUE_ALIAS	VARCHAR	The alias for the value field.
KEY_TYPE_NAME	VARCHAR	The type of the key field.
VALUE_TYPE_NAME	VARCHAR	The type of the value field.

Column

Data Type

Description

CACHE_GROUP_ID

INT

The id of the cache group.

CACHE_GROUP_NAME

VARCHAR

The name of the cache group.

CACHE_ID

INT

The ID of the cache corresponding to the table.

CACHE_NAME

VARCHAR

The name of the cache corresponding to the table.

SCHEMA_NAME

VARCHAR

The name of the schema.

TABLE_NAME

VARCHAR

The name of the table.

AFFINITY_KEY_COLUMN

VARCHAR

The column that is used as the affinity key.

KEY_ALIAS

VARCHAR

The alias for the key fields.

VALUE_ALIAS

VARCHAR

The alias for the value field.

KEY_TYPE_NAME

VARCHAR

The type of the key field.

VALUE_TYPE_NAME

VARCHAR

The type of the value field.

CACHE_GROUPS

The CACHE_GROUPS view contains information about the cache groups.

Column Data Type Description

Column	Data Type	Description
CACHE_GROUP_ID	INT	The ID of the cache group.
CACHE_GROUP_NAME	VARCHAR	The name of the cache group.
IS_SHARED	BOOLEAN	If this group contains more than one cache.
CACHE_COUNT	INT	The number of caches in the cache group.
CACHE_MODE	VARCHAR	The cache mode.
ATOMICITY_MODE	VARCHAR	The atomicity mode of the cache group.
AFFINITY	VARCHAR	The string representation (as returned by the `toString()` method) of the affinity function defined for the cache group.
PARTITIONS_COUNT	INT	The number of partitions.
NODE_FILTER	VARCHAR	The string representation (as returned by the `toString()` method) of the node filter defined for the cache group.
DATA_REGION_NAME	VARCHAR	The name of the data region.
TOPOLOGY_VALIDATOR	VARCHAR	The string representation (as returned by the `toString()` method) of the topology validator defined for the cache group.
PARTITION_LOSS_POLICY	VARCHAR	Partition loss policy.
REBALANCE_MODE	VARCHAR	Rebalancing mode.
REBALANCE_DELAY	LONG	Rebalancing delay.
REBALANCE_ORDER	INT	Rebalancing order.
BACKUPS	INT	The number of backup partitions configured for the cache group.

CACHE_GROUP_ID

INT

The ID of the cache group.

CACHE_GROUP_NAME

VARCHAR

The name of the cache group.

IS_SHARED

BOOLEAN

If this group contains more than one cache.

CACHE_COUNT

INT

The number of caches in the cache group.

CACHE_MODE

VARCHAR

The cache mode.

ATOMICITY_MODE

VARCHAR

The atomicity mode of the cache group.

AFFINITY

VARCHAR

The string representation (as returned by the toString() method) of the affinity function defined for the cache group.

PARTITIONS_COUNT

INT

The number of partitions.

NODE_FILTER

VARCHAR

The string representation (as returned by the toString() method) of the node filter defined for the cache group.

DATA_REGION_NAME

VARCHAR

The name of the data region.

TOPOLOGY_VALIDATOR

VARCHAR

The string representation (as returned by the toString() method) of the topology validator defined for the cache group.

PARTITION_LOSS_POLICY

VARCHAR

Partition loss policy.

REBALANCE_MODE

VARCHAR

Rebalancing mode.

REBALANCE_DELAY

LONG

Rebalancing delay.

REBALANCE_ORDER

INT

Rebalancing order.

BACKUPS

INT

The number of backup partitions configured for the cache group.

LOCAL_SQL_RUNNING_QUERIES

This view contains information about the SQL queries currently executing on the node where the view is maintained. This view is node-specific, meaning each node has an instance of the view that contains the information about SQL queries that were started on this node.

Column Data Type Description

Column	Data Type	Description
QUERY_ID	VARCHAR	The ID of the query (generated internally).
SQL	VARCHAR	The SQL query.
SCHEMA_NAME	VARCHAR	The name of the schema.
LOCAL	BOOLEAN	Indicates whether the query is local or not.
START_TIME	TIMESTAMP	A timestamp identifying when the query was started.
DURATION	BIGINT	The duration of the query up to the current moment.
MEMORY_CURRENT	BIGINT	The amount of memory the query uses at the current moment, in bytes.
MEMORY_MAX	BIGINT	The maximum amount of memory the query has used during its execution, in bytes.
DISK_ALLOCATION_CURRENT	BIGINT	The amount of disk space the query uses at the moment, in bytes. See Query Offloading for details.
DISK_ALLOCATION_MAX	BIGINT	Maximum amount of disk space the query has used during its execution, in bytes.
DISK_ALLOCATION_TOTAL	BIGINT	The query can allocate different amount of disk space at different stages of execution (because query execution follows the map-reduce pattern). This column returns the sum of those amounts, in bytes.
INITIATOR_ID	VARCHAR	A string identifying the entity that started the query. By default, the `initiator_id` has different format depending on where the query was started: JDBC thin driver: `jdbc-thin:<client_IP_host>:<client_IP_port>@<user_name>` Thin clients: `cli:<client_IP_host>:<client_IP_port>@<user_name>` JDBC client driver: `jdbc-v2:<client_IP_host>:sqlGrid-ignite-jdbc-driver-<UUID>` Task: `<job_class_name>:<job_ID>` The query initiator can be set via SQL API: SqlFieldsQuery.

QUERY_ID

VARCHAR

The ID of the query (generated internally).

SQL

VARCHAR

The SQL query.

SCHEMA_NAME

VARCHAR

The name of the schema.

LOCAL

BOOLEAN

Indicates whether the query is local or not.

START_TIME

TIMESTAMP

A timestamp identifying when the query was started.

DURATION

BIGINT

The duration of the query up to the current moment.

MEMORY_CURRENT

BIGINT

The amount of memory the query uses at the current moment, in bytes.

MEMORY_MAX

BIGINT

The maximum amount of memory the query has used during its execution, in bytes.

DISK_ALLOCATION_CURRENT

BIGINT

The amount of disk space the query uses at the moment, in bytes. See Query Offloading for details.

DISK_ALLOCATION_MAX

BIGINT

Maximum amount of disk space the query has used during its execution, in bytes.

DISK_ALLOCATION_TOTAL

BIGINT

The query can allocate different amount of disk space at different stages of execution (because query execution follows the map-reduce pattern). This column returns the sum of those amounts, in bytes.

INITIATOR_ID

VARCHAR

A string identifying the entity that started the query. By default, the initiator_id has different format depending on where the query was started:

JDBC thin driver: jdbc-thin:<client_IP_host>:<client_IP_port>@<user_name>
Thin clients: cli:<client_IP_host>:<client_IP_port>@<user_name>
JDBC client driver: jdbc-v2:<client_IP_host>:sqlGrid-ignite-jdbc-driver-<UUID>
Task: <job_class_name>:<job_ID>

The query initiator can be set via SQL API: SqlFieldsQuery.

LOCAL_SQL_QUERY_HISTORY

This system view contains the list of SQL queries executed on the node where the view is maintained. This system view is node-specific, meaning each node has an instance of the view that contains the information about SQL queries that were started on this node.

Column Data Type Description

Column	Data Type	Description
SCHEMA_NAME	VARCHAR	The name of the schema.
SQL	VARCHAR	The SQL query.
LOCAL	BOOLEAN	Indicates whether the query is local.
EXECUTIONS	BIGINT	How many times the query was executed since the start of the cluster.
FAILURES	BIGINT	How many times the query failed.
DURATION_MIN	BIGINT	Minimum duration of the query.
DURATION_MAX	BIGINT	Maximum duration of the query.
LAST_START_TIME	TIMESTAMP	The timestamp when the query was started last time.
MEMORY_MIN	BIGINT	Minimum amount of memory the query has used, in bytes.
MEMORY_MAX	BIGINT	Maximum amount of memory the query has used, in bytes.
DISK_ALLOCATION_MIN	BIGINT	Minimum allocated disk space the query has used. See Query Offloading for details.
DISK_ALLOCATION_MAX	BIGINT	Maximum allocated disk space the query has used.
DISK_ALLOCATION_TOTAL_MIN	BIGINT	Minimum total allocated disk space the query has used. See the explanation for the `DISK_ALLOCATION_TOTAL` column in LOCAL_SQL_RUNNING_QUERIES.
DISK_ALLOCATION_TOTAL_MAX	BIGINT	Maximum total allocated disk space the query has used.

SCHEMA_NAME

VARCHAR

The name of the schema.

SQL

VARCHAR

The SQL query.

LOCAL

BOOLEAN

Indicates whether the query is local.

EXECUTIONS

BIGINT

How many times the query was executed since the start of the cluster.

FAILURES

BIGINT

How many times the query failed.

DURATION_MIN

BIGINT

Minimum duration of the query.

DURATION_MAX

BIGINT

Maximum duration of the query.

LAST_START_TIME

TIMESTAMP

The timestamp when the query was started last time.

MEMORY_MIN

BIGINT

Minimum amount of memory the query has used, in bytes.

MEMORY_MAX

BIGINT

Maximum amount of memory the query has used, in bytes.

DISK_ALLOCATION_MIN

BIGINT

Minimum allocated disk space the query has used. See Query Offloading for details.

DISK_ALLOCATION_MAX

BIGINT

Maximum allocated disk space the query has used.

DISK_ALLOCATION_TOTAL_MIN

BIGINT

Minimum total allocated disk space the query has used. See the explanation for the DISK_ALLOCATION_TOTAL column in LOCAL_SQL_RUNNING_QUERIES.

DISK_ALLOCATION_TOTAL_MAX

BIGINT

Maximum total allocated disk space the query has used.

INDEXES

The INDEXES view contains information about SQL indexes.

Column	Data Type	Description
INDEX_NAME	VARCHAR	The name of the index.
INDEX_TYPE	VARCHAR	The type of the index.
COLUMNS	VARCHAR	The columns included in the index.
SCHEMA_NAME	VARCHAR	The schema name.
TABLE_NAME	VARCHAR	The table name.
CACHE_GROUP_ID	VARCHAR	The cache group ID.
CACHE_GROUP_NAME	VARCHAR	The cache group name.
CACHE_NAME	VARCHAR	The cache name.
CACHE_ID	INT	Cache ID.
INLINE_SIZE	INT	The inline size in bytes.
IS_PK	BOOLEAN	Indicates whether the index is for the primary key.
IS_UNIQUE	BOOLEAN	Indicates if the index is unique.

Column

Data Type

Description

INDEX_NAME

VARCHAR

The name of the index.

INDEX_TYPE

VARCHAR

The type of the index.

COLUMNS

VARCHAR

The columns included in the index.

SCHEMA_NAME

VARCHAR

The schema name.

TABLE_NAME

VARCHAR

The table name.

CACHE_GROUP_ID

VARCHAR

The cache group ID.

CACHE_GROUP_NAME

VARCHAR

The cache group name.

CACHE_NAME

VARCHAR

The cache name.

CACHE_ID

INT

Cache ID.

INLINE_SIZE

INT

The inline size in bytes.

IS_PK

BOOLEAN

Indicates whether the index is for the primary key.

IS_UNIQUE

BOOLEAN

Indicates if the index is unique.

STATISTICS_CONFIGURATION

The STATISTICS_CONFIGURATION view contains information about SQL statistics configuration.

Column	Data Type	Description
SCHEMA	VARCHAR	Schema name.
TYPE	VARCHAR	Object type.
NAME	VARCHAR	Object name.
COLUMN	VARCHAR	Column name.
MAX_PARTITION_OBSOLESCENCE_PERCENT	TINYINT	Maximum percentage of obsolescent rows in statistics. See the SQL Statistics page for more details.
MANUAL_NULLS	BIGINT	If not null - overrided number of null values.
MANUAL_DISTINCT	BIGINT	If not null - overrided number of distinct values.
MANUAL_TOTAL	BIGINT	If not null - overrided total number of values.
MANUAL_SIZE	INT	If not null - overrided average size of non null values in column.
VERSION	BIGINT	Configuration version.

Column

Data Type

Description

SCHEMA

VARCHAR

Schema name.

TYPE

VARCHAR

Object type.

NAME

VARCHAR

Object name.

COLUMN

VARCHAR

Column name.

MAX_PARTITION_OBSOLESCENCE_PERCENT

TINYINT

Maximum percentage of obsolescent rows in statistics. See the SQL Statistics page for more details.

MANUAL_NULLS

BIGINT

If not null - overrided number of null values.

MANUAL_DISTINCT

BIGINT

If not null - overrided number of distinct values.

MANUAL_TOTAL

BIGINT

If not null - overrided total number of values.

MANUAL_SIZE

INT

If not null - overrided average size of non null values in column.

VERSION

BIGINT

Configuration version.

STATISTICS_LOCAL_DATA

The STATISTICS_LOCAL_DATA view contains SQL statistics for locally managed (or stored) data. This view is node-specific, so each node has an instance of the view that contains information about its local data statistics.

Column	Data Type	Description
SCHEMA	VARCHAR	Schema name.
TYPE	VARCHAR	Object type.
NAME	VARCHAR	Object name.
COLUMN	VARCHAR	Column name.
ROWS_COUNT	BIGINT	Count of column rows.
DISTINCT	BIGINT	Number of unique non-null values.
NULLS	BIGINT	Number of null values.
TOTAL	BIGINT	Total number of values in column.
SIZE	INTEGER	Average value size in bytes.
VERSION	BIGINT	Statistics version.
LAST_UPDATE_TIME	VARCHAR	Maximum time of all partition statistics which was used to generate local one.

Column

Data Type

Description

SCHEMA

VARCHAR

Schema name.

TYPE

VARCHAR

Object type.

NAME

VARCHAR

Object name.

COLUMN

VARCHAR

Column name.

ROWS_COUNT

BIGINT

Count of column rows.

DISTINCT

BIGINT

Number of unique non-null values.

NULLS

BIGINT

Number of null values.

TOTAL

BIGINT

Total number of values in column.

SIZE

INTEGER

Average value size in bytes.

VERSION

BIGINT

Statistics version.

LAST_UPDATE_TIME

VARCHAR

Maximum time of all partition statistics which was used to generate local one.

STATISTICS_PARTITION_DATA

The STATISTICS_PARTITION_DATA view contains information about SQL statistics on every partition data stored on a local node.

Column	Data Type	Description
SCHEMA	VARCHAR	Schema name.
TYPE	VARCHAR	Object type.
NAME	VARCHAR	Object name.
COLUMN	VARCHAR	Column name.
PARTITION	INTEGER	Partition number.
ROWS_COUNT	BIGINT	Count of column rows.
UPDATE_COUNTER	BIGINT	Partition counter update when statistics are collected.
DISTINCT	BIGINT	Number of unique non-null values.
NULLS	BIGINT	Number of null values.
TOTAL	BIGINT	Total number of values in column.
SIZE	INTEGER	Average value size in bytes.
VERSION	BIGINT	Statistics version.
LAST_UPDATE_TIME	VARCHAR	Maximum time of all partition statistics which was used to generate local one.

Column

Data Type

Description

SCHEMA

VARCHAR

Schema name.

TYPE

VARCHAR

Object type.

NAME

VARCHAR

Object name.

COLUMN

VARCHAR

Column name.

PARTITION

INTEGER

Partition number.

ROWS_COUNT

BIGINT

Count of column rows.

UPDATE_COUNTER

BIGINT

Partition counter update when statistics are collected.

DISTINCT

BIGINT

Number of unique non-null values.

NULLS

BIGINT

Number of null values.

TOTAL

BIGINT

Total number of values in column.

SIZE

INTEGER

Average value size in bytes.

VERSION

BIGINT

Statistics version.

LAST_UPDATE_TIME

VARCHAR

Maximum time of all partition statistics which was used to generate local one.

Examples

To query the system views using the SQLLine tool, connect to the SYS schema as follows:

./sqlline.sh -u jdbc:ignite:thin://127.0.0.1/SYS

If your node is running on a remote server, replace 127.0.0.1 with the IP address of the server.

Run a query:

-- get the list of nodes
select * from NODES;

-- view the CPU load as a percentage for a specific node
select CUR_CPU_LOAD * 100 from NODE_METRICS where NODE_ID = 'a1b77663-b37f-4ddf-87a6-1e2d684f3bae'

The same example using Java Thin Client:

ClientConfiguration cfg = new ClientConfiguration().setAddresses("127.0.0.1:10800");

try (IgniteClient igniteClient = Ignition.startClient(cfg)) {

    // getting the id of the first node
    UUID nodeId = (UUID) igniteClient.query(new SqlFieldsQuery("SELECT * from NODES").setSchema("SYS"))
    .getAll().iterator().next().get(0);

    double cpu_load = (double) igniteClient
    .query(new SqlFieldsQuery("select CUR_CPU_LOAD * 100 from NODE_METRICS where NODE_ID = ? ")
    .setSchema("SYS").setArgs(nodeId.toString()))
    .getAll().iterator().next().get(0);

    System.out.println("node's cpu load = " + cpu_load);

} catch (ClientException e) {
    System.err.println(e.getMessage());
} catch (Exception e) {
    System.err.format("Unexpected failure: %s\n", e);
}

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Last updated on Jun 06, 2023