GridGain Developers Hub

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.

BASELINE_NODE_ATTRIBUTES

The BASELINE_NODE_ATTRIBUTES view exposes node attributes fixed at a moment when a current baseline topology was set.

Column Data Type Description

NODE_CONSISTENT_ID

VARCHAR

Node consistent ID.

NAME

VARCHAR

Name of the node attribute.

VALUE

VARCHAR

Attribute value.

CACHES

Column Data Type Description

CACHE_NAME

string

Cache name.

CACHE_ID

int

Cache ID.

CACHE_TYPE

string

Cache type.

CACHE_MODE

string

Cache mode.

ATOMICITY_MODE

string

Atomicity mode.

CACHE_GROUP_NAME

string

Cache group name.

AFFINITY

string

toString representation of affinity function.

AFFINITY_MAPPER

string

toString representation of affinity mapper.

BACKUPS

int

backup count.

CACHE_GROUP_ID

int

cache group id.

CACHE_LOADER_FACTORY

string

toString representation of cache loader factory.

CACHE_STORE_FACTORY

string

toString representation of cache store factory.

CACHE_WRITER_FACTORY

string

toString representation of cache writer factory.

DATA_REGION_NAME

string

Data region name.

DEFAULT_LOCK_TIMEOUT

long

Lock timeout in milliseconds.

EVICTION_FILTER

string

toString representation of eviction filter.

EVICTION_POLICY_FACTORY

string

toString representation of eviction policy factory.

EXPIRY_POLICY_FACTORY

string

toString representation of expiry policy factory.

INTERCEPTOR

string

toString representation of interceptor.

IS_COPY_ON_READ

boolean

Flag indicating whether a copy of the value stored in the on-heap cache.

IS_EAGER_TTL

boolean

Flag indicating whether expired cache entries will be eagerly removed from cache.

IS_ENCRYPTION_ENABLED

boolean

True if cache data encrypted.

IS_EVENTS_DISABLED

boolean

True if events disabled for this cache.

IS_INVALIDATE

boolean

True if values will be invalidated (nullified) upon commit in near cache.

IS_LOAD_PREVIOUS_VALUE

boolean

True if value should be loaded from store if it is not in the cache.

IS_MANAGEMENT_ENABLED

boolean

True if cache management operations are enabled.

IS_NEAR_CACHE_ENABLED

boolean

True if near cache enabled.

IS_ONHEAP_CACHE_ENABLED

boolean

True if on heap cache enabled.

IS_READ_FROM_BACKUP

boolean

True if read operation should be performed from backup node.

IS_READ_THROUGH

boolean

True if read from third party storage enabled.

IS_SQL_ESCAPE_ALL

boolean

If true all the SQL table and field names will be escaped with double quotes.

IS_SQL_ONHEAP_CACHE_ENABLED

boolean

If true SQL on-heap cache is enabled. When enabled, Ignite will cache SQL rows as they are accessed by query engine. Rows are invalidated and evicted from cache when relevant cache entry is either changed or evicted.

IS_STATISTICS_ENABLED

boolean

True if cache statistics are enabled.

IS_STORE_KEEP_BINARY

boolean

Flag indicating that {@link CacheStore} implementation is working with binary objects instead of Java objects.

IS_WRITE_BEHIND_ENABLED

boolean

Flag indicating whether Ignite should use write-behind behavior for the cache store.

IS_WRITE_THROUGH

boolean

True if write to third party storage enabled.

MAX_CONCURRENT_ASYNC_OPERATIONS

int

Maximum number of allowed concurrent asynchronous operations. If 0 returned then number of concurrent asynchronous operations is unlimited.

MAX_QUERY_ITERATORS_COUNT

int

Maximum number of query iterators that can be stored. Iterators are stored to support query. pagination when each page of data is sent to user’s node only on demand.

NEAR_CACHE_EVICTION_POLICY_FACTORY

string

toString representation of near cache eviction policy factory.

NEAR_CACHE_START_SIZE

int

Initial cache size for near cache which will be used to pre-create internal hash table after start.

NODE_FILTER

string

toString representation of node filter.

PARTITION_LOSS_POLICY

string

toString representation of partition loss policy.

QUERY_DETAIL_METRICS_SIZE

int

size of queries detail metrics that will be stored in memory for monitoring purposes. If 0 then history will not be collected.

QUERY_PARALLELISM

int

Hint to query execution engine on desired degree of parallelism within a single node.

REBALANCE_BATCH_SIZE

int

Size (in bytes) to be loaded within a single rebalance message.

REBALANCE_BATCHES_PREFETCH_COUNT

int

Number of batches generated by supply node at rebalancing start.

REBALANCE_DELAY

long

Rebalance delay in milliseconds.

REBALANCE_MODE

string

Rebalance mode.

REBALANCE_ORDER

int

Rebalance order.

REBALANCE_THROTTLE

long

Time in milliseconds to wait between rebalance messages to avoid overloading of CPU or network.

REBALANCE_TIMEOUT

long

Rebalance timeout in milliseconds.

SQL_INDEX_MAX_INLINE_SIZE

int

Index inline size in bytes.

SQL_ONHEAP_CACHE_MAX_SIZE

int

Maximum SQL on-heap cache. Measured in number of rows. When maximum size is reached oldest cached rows will be evicted.

SQL_SCHEMA

string

Schema name.

TOPOLOGY_VALIDATOR

string

toString representation of topology validator.

WRITE_BEHIND_BATCH_SIZE

int

Maximum batch size for write-behind cache store operations.

WRITE_BEHIND_COALESCING

boolean

Write coalescing flag for write-behind cache store operations. Store operations (get or remove) with the same key are combined or coalesced to single, resulting operation to reduce pressure to underlying cache store.

WRITE_BEHIND_FLUSH_FREQUENCY

long

Frequency with which write-behind cache is flushed to the cache store in milliseconds.

WRITE_BEHIND_FLUSH_SIZE

int

Maximum size of the write-behind cache. If cache size exceeds this value, all cached items are flushed to the cache store and write cache is cleared.

WRITE_BEHIND_FLUSH_THREAD_COUNT

int

Number of threads that will perform cache flushing.

WRITE_SYNCHRONIZATION_MODE

string

Gets write synchronization mode.

CONFIGURATION

The CONFIGURATION view contains the configuration properties of node.

Column Data Type Description

NAME

VARCHAR

Configuration property name.

VALUE

VARCHAR

Configuration property value.

DATASTREAM_THREADPOOL_QUEUE

This view exposes information about tasks waiting for the execution in the data streamer stripped thread pool.

Column Data Type Description

STRIPE_INDEX

int

Index of the stripe thread.

DESCRIPTION

string

toString representation of the task.

TASK_NAME

string

Class name of the task.

THREAD_NAME

string

Name of the stripe thread.

DISTRIBUTED_METASTORAGE

This view exposes the contents of the distributed metastorage cache.

Column Data type Description

NAME

string

Metastorage name.

VALUE

string

String or raw binary (if data could not be deserialized for some reason) representation of an element.

DS_ATOMICLONGS

This view exposes the list of IgniteAtomicLong.

Column Data Type Description

NAME

string

Data structure name.

VALUE

long

Current value.

GROUP_NAME

string

Cache group name to store data structure.

GROUP_ID

int

Cache group id to store data structure.

REMOVED

boolean

True if removed.

DS_ATOMICREFERENCES

This view exposes the list of IgniteAtomicReference.

Column Data Type Description

NAME

string

Data structure name.

VALUE

string

Current value.

GROUP_NAME

string

Cache group name to store data structure.

GROUP_ID

int

Cache group id to store data structure.

REMOVED

boolean

True if removed.

DS_ATOMICSEQUENCES

This view exposes the list of IgniteAtomicSequence.

Column Data Type Description

NAME

string

Data structure name.

VALUE

long

Current sequence value

BATCH_SIZE

long

Local batch size.

GROUP_NAME

string

Cache group name to store data structure.

GROUP_ID

int

Cache group id to store data structure.

REMOVED

boolean

True if removed.

DS_ATOMICSTAMPED

This view exposes the list of IgniteAtomicStamped.

Column Data Type Description

NAME

string

Data structure name.

VALUE

string

Current value.

STAMP

string

Current stamp value

GROUP_NAME

string

Cache group name to store data structure.

GROUP_ID

int

Cache group id to store data structure.

REMOVED

boolean

True if removed.

DS_COUNTDOWNLATCHES

This view exposes the list of IgniteCountDownLatch.

Column Data Type Description

NAME

string

Data structure name.

COUNT

int

Current count.

INITIAL_COUT

int

Initial count.

AUTO_DELETE

boolean

True to automatically delete the latch from a cache when its count reaches zero.

GROUP_NAME

string

Cache group name to store data structure.

GROUP_ID

int

Cache group id to store data structure.

REMOVED

boolean

True if removed.

DS_QUEUES

This view exposes the list of IgniteQueue.

Column Data Type Description

ID

UUID

ID.

NAME

string

Data structure name.

CAPACITY

int

Capacity.

SIZE

int

Current size.

GROUP_NAME

string

Cache group name to store data structure.

GROUP_ID

int

Cache group id to store data structure.

BOUNDED

boolean

True when queue capacity is bounded.

COLLOCATED

boolean

True when collocated.

REMOVED

boolean

True if removed.

DS_REENTRANTLOCKS

This view exposes the contents of IgniteLock.

Column Data Type Description

NAME

string

Data structure name.

LOCKED

boolean

True if locked.

HAS_QUEUED_THREADS

boolean

True if there may be other threads waiting to acquire the lock.

FAILOVER_SAFE

boolean

True if failover safe.

FAIR

boolean

True if lock is fair.

BROKEN

boolean

True if a node failed on this semaphore and FAILOVER_SAFE flag was set to false; false otherwise.

GROUP_NAME

string

Cache group name to store data structure.

GROUP_ID

int

Cache group id to store data structure.

REMOVED

boolean

True if removed.

DS_SEMAPHORES

This view exposes the list of IgniteSemaphore.

Column Data Type Description

NAME

string

Data structure name.

AVAILABLE_PERMITS

long

Number of permits available.

HAS_QUEUED_THREADS

boolean

True if there may be other threads waiting to acquire the lock.

QUEUE_LENGTH

int

The estimated number of nodes waiting for this lock.

FAILOVER_SAFE

boolean

True if failover safe.

BROKEN

boolean

True if a node failed on this semaphore and FAILOVER_SAFE flag was set to false; false otherwise.

GROUP_NAME

string

Cache group name to store data structure.

GROUP_ID

int

Cache group id to store data structure.

REMOVED

boolean

True if removed.

DS_SETS

This view exposes the list of IgniteSet.

Column Data Type Description

ID

UUID

ID.

NAME

string

Data structure name.

SIZE

int

Current size.

GROUP_NAME

string

Cache group name to store data structure.

GROUP_ID

int

Cache group id to store data structure.

COLLOCATED

boolean

True when collocated.

REMOVED

boolean

True if removed.

LOCAL_CACHE_GROUPS_IO

This view exposes cache group’s I/O statistics.

Column Data Type Description

CACHE_GROUP_ID

UUID

Cache group ID.

CACHE_GROUP_NAME

string

Cache group name.

PHYSICAL_READS

int

Number of physical reads from the node start or last reset (available through JMX IoStatisticsMetricsMXBean).

LOGICAL_READS

int

Number of logical reads from the node start or last reset (available through JMX IoStatisticsMetricsMXBean).

METRICS

Column Data Type Description

NAME

string

Metric name.

VALUE

string

Current metric value.

DESCRIPTION

string

Metric description.

SERVICES

Column Data Type Description

SERVICE_ID

UUID

Service ID.

NAME

string

Service name.

SERVICE_CLASS

string

Service class name.

CACHE_NAME

string

Cache name.

ORIGIN_NODE_ID

UUID

Originating node ID.

TOTAL_COUNT

int

Total count of service instances.

MAX_PER_NODE_COUNT

int

Maximum count of services instances per node.

AFFINITY_KEY

string

Affinity key value for service.

NODE_FILTER

string

toString representation of node filter.

STATICALLY_CONFIGURED

boolean

True is service statically configured.

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.

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.

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.

BINARY_METADATA

This view exposes information about all available binary types.

Column Data type Description

TYPE_ID

int

Type ID.

TYPE_NAME

string

Type name.

AFF_KEY_FIELD_NAME

string

Affinity key field name.

FIELDS_COUNT

int

Fields count.

FIELDS

string

Recorded object fields.

SCHEMAS_IDS

string

Schema IDs registered for this type.

IS_ENUM

boolean

Whether this is enum type.

NODE_METRICS

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

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.

PARTITION_STATES

This view exposes information about the distribution of cache group partitions across cluster nodes.

Column Data type Description

CACHE_GROUP_ID

int

Cache group ID.

PARTITION_ID

int

Partition ID.

NODE_ID

UUID

Node ID.

STATE

string

Partition state. Possible states: MOVING - partition is being loaded from another node to this node; OWNING - this node is either a primary or backup owner; RENTING - this node is neither primary nor back up owner (is being currently evicted); EVICTED - partition has been evicted; LOST - partition state is invalid, the partition should not be used.

IS_PRIMARY

boolean

Primary partition flag.

TRANSACTIONS

This view exposes information about currently running transactions.

Column Data Type Description

ORIGINATING_NODE_ID

UUID

The node the transaction started from.

STATE

string

Current transaction status.

XID

UUID

Unique transaction identifier.

LABEL

string

Transaction label.

START_TIME

long

Start time of the transaction.

ISOLATION

string

Isolation level.

CONCURRENCY

string

Concurrency setting.

KEYS_COUNT

int

The number of keys in the transaction.

CACHE_IDS

string

The IDs of caches involved in the transaction.

COLOCATED

boolean

If the data for the transaction is colocated.

DHT

boolean

If the DHT is used.

DURATION

long

Transaction duration.

IMPLICIT

boolean

If the transaction is implicit.

IMPLICIT_SINGLE

boolean

If the transaction is part of the batch.

INTERNAL

boolean

If the transaction is internal.

LOCAL

boolean

If the transaction is performed on a local node.

LOCAL_NODE_ID

UUID

The id of the node.

NEAR

boolean

If the transaction is near.

ONE_PHASE_COMMIT

boolean

If the commit was done in a single phase.

OTHER_NODE_ID

UUID

The id of the remote node involved in the transaction.

SUBJECT_ID

UUID

The subject ID of the transaction.

SYSTEM

boolean

If the transaction is system-related.

THREAD_ID

long

The id of the thread involved in the transaction.

TIMEOUT

long

Transaction timeout.

TOP_VER

string

Transaction limits.

SQL_QUERIES

This view exposes information about currently running SQL queries.

Column Data Type Description

QUERY_ID

UUID

Query ID.

SQL

string

Query text.

ORIGIN_NODE_ID

UUID

Node that started query.

START_TIME

date

Query start time.

DURATION

long

Query execution duration.

INITIATOR_ID

string

User defined query initiator ID.

LOCAL

boolean

True if local only.

SCHEMA_NAME

string

Schema name.

DISK_ALLOCATION_CURRENT

long

Disk allocation for the query at the current moment.

DISK_ALLOCATION_MAX

long

Maximum disk allocation during the query run.

DISK_ALLOCATION_TOTAL

long

Total disk allocation during the query run.

MEMORY_CURRENT

long

Current memory usage.

MEMORY_MAX

long

Maximum memory allocation during the query run.

DISTRIBUTED_JOINS

boolean

True if distributed joins for the query are enabled.

ENFORCE_JOIN_ORDER

boolean

True if the join order enforcement for the query is enabled.

LAZY

boolean

True if lazy loading of the query results is enabled.

LABEL

string

Query label. See SQL Query Labels for more information.

SQL_QUERIES_HISTORY

Column Data Type Description

SCHEMA_NAME

string

Schema name.

SQL

string

Query text.

LOCAL

boolean

True if local only.

EXECUTIONS

long

Count of executions.

FAILURES

long

Count of failures.

DURATION_MIN

long

Minimal duration of execution.

DURATION_MAX

long

Maximum duration of execution.

LAST_START_TIME

date

Last execution date.

DISK_ALLOCATION_MIN

long

Minimum disk allocation among the query runs.

DISK_ALLOCATION_MAX

long

Maximum disk allocation among the query runs.

DISK_ALLOCATION_TOTAL_MIN

long

Minimum total disk allocation among the query runs.

DISK_ALLOCATION_TOTAL_MAX

long

Maximum total disk allocation among the query runs.

MEMORY_MIN

long

Minimum memory allocation among the query runs.

MEMORY_MAX

long

Maximum memory allocation among the query runs.

DISTRIBUTED_JOINS

boolean

True if distributed joins were enabled during the query execution.

ENFORCE_JOIN_ORDER

boolean

True if the join order enforcement was enabled during the query execution.

LAZY

boolean

True if lazy loading of the query results was enabled during the query execution.

SCHEMAS

This view exposes information about SQL schemas.

Column Data Type Description

NAME

string

Name of the schema

PREDEFINED

boolean

If true, schema is predefined.

TASKS

This view exposes information about currently running compute tasks started by a node. For instance, let’s assume that an application started a compute task using the Ignite thick client and the task’s job was executed on one of the server nodes. In this case, the thick client will report statistics related to the task via this system view while the server node will be updating the thick client with task-related execution details.

Column Data Type Description

ID

UUID

Task id.

SESSION_ID

UUID

Session id.

TASK_NODE_ID

UUID

Task originating node id.

TASK_NAME

string

Task name.

TASK_CLASS_NAME

string

Task class name.

AFFINITY_PARTITION_ID

int

Cache partition id.

AFFINITY_CACHE_NAME

string

Cache name.

START_TIME

long

Start time.

END_TIME

long

End time.

EXEC_NAME

string

Thread pool name executing task.

INTERNAL

boolean

True if task is internal.

USER_VERSION

string

Task user version.

JOBS

This system view shows a list of compute jobs started by a node as part of a compute task. To view the status of the compute task refer to the TASKS system view.

Column Data Type Description

ID

UUID

Job ID

SESSION_ID

UUID

Job’s session ID. Note, SESSION_ID is equal to TASKS.SESSION_ID for the jobs belonging to a specific task.

ORIGIN_NODE_ID

UUID

The id of the node that started the job.

TASK_NAME

string

The name of the task.

TASK_CLASSNAME

string

Class name of the task.

AFFINITY_CACHE_IDS

string

IDs of one or more caches if the job is executed against one of the IgniteCompute.affinity methods. The parameter is empty, if you use IgniteCompute APIs that don’t target specific caches.

AFFINITY_PARTITION_ID

int

IDs of one or more partitions if the job is executed via one of the IgniteCompute.affinity methods. The parameter is empty, if you use IgniteCompute APIs that don’t target specific partitions.

CREATE_TIME

long

Job’s creation time.

START_TIME

long

Job’s start time.

FINISH_TIME

long

Job’s finish time.

EXECUTOR_NAME

string

The name of the task’s executor.

IS_FINISHING

boolean

True if the job is finishing.

IS_INTERNAL

boolean

True if the job is internal.

IS_STARTED

boolean

True if the job has been started.

IS_TIMEDOUT

boolean

True if the job timed out before completing.

STATE

string

Possible values:

  • ACTIVE - Job is being executed.

  • PASSIVE - Job is added to the execution queue (see CollisionSPI for details).

  • CANCELED - Job is canceled.

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.

TABLE_COLUMNS

This view exposes information about SQL table columns.

Column Data Type Description

AFFINITY_COLUMN

boolean

True if column affinity key.

AUTO_INCREMENT

boolean

True if auto incremented.

COLUMN_NAME

string

Column name.

DEFAULT_VALUE

string

Default column value.

NULLABLE

boolean

True if nullable.

PK

boolean

True if primary key.

PRECISION

int

Column precision.

SCALE

int

Column scale.

SCHEMA_NAME

string

Schema name.

TABLE_NAME

string

Table name.

TYPE

string

Column type.

VIEWS

This view exposes information about SQL views.

Column Data Type Description

NAME

string

Name

SCHEMA

string

Schema.

DESCRIPTION

string

Description.

VIEW_COLUMNS

This view exposes information about SQL views columns.

Column Data Type Description

COLUMN_NAME

string

Name of the column.

DEFAULT_VALUE

string

Column default value.

NULLABLE

boolean

True if column nullable.

PRECISION

int

Column precision.

SCALE

int

Column scale.

SCHEMA_NAME

string

Name of the view.

TYPE

string

Column type.

VIEW_NAME

string

Name of the view.

CACHE_GROUPS

The CACHE_GROUPS view contains information about the cache groups.

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_PAGE_LISTS

Column Data Type Description

CACHE_GROUP_ID

int

Cache group ID.

PARTITION_ID

int

Partition ID.

NAME

string

Page list name.

BUCKET_NUMBER

int

Bucket number.

BUCKET_SIZE

long

Count of pages in the bucket.

STRIPES_COUNT

int

Count of stripes used by this bucket. Stripes are used to avoid contention.

CACHED_PAGES_COUNT

int

Count of pages in an on-heap page list cache for this bucket.

PAGE_FREE_SPACE

int

Free space (in bytes) available to use for each page in this bucket.

DATA_REGION_PAGE_LISTS

Column Data Type Description

NAME

string

Page list name.

BUCKET_NUMBER

int

Bucket number.

BUCKET_SIZE

long

Count of pages in the bucket.

STRIPES_COUNT

int

Count of stripes used by this bucket. Stripes are used to avoid contention.

CACHED_PAGES_COUNT

int

Count of pages in an on-heap page list cache for this bucket.

PAGE_FREE_SPACE

int

Free space (in bytes) available to use for each page in this bucket.

STRIPED_THREADPOOL_QUEUE

This view exposes information about tasks waiting for the execution in the system striped thread pool.

Column Data Type Description

DESCRIPTION

string

toString representation of the task.

STRIPE_INDEX

int

Index of the stripe thread.

TASK_NAME

string

Class name of the task.

THREAD_NAME

string

Name of the stripe thread.

SCAN_QUERIES

This view exposes information about currently running scan queries.

Column Data Type Description

CACHE_GROUP_ID

int

Cache group ID.

CACHE_GROUP_NAME

string

Cache group name.

CACHE_ID

int

Cache ID.

CACHE_NAME

string

Cache name.

CANCELED

boolean

True if canceled.

DURATION

long

Query duration.

FILTER

string

toString representation of filter.

KEEP_BINARY

boolean

True if keepBinary enabled.

LOCAL

boolean

True if query local only.

ORIGIN_NODE_ID

UUID

Node id started query.

PAGE_SIZE

int

Page size.

PARTITION

int

Query partition ID.

QUERY_ID

long

Query ID.

START_TIME

long

Query start time.

SUBJECT_ID

UUID

User ID started query.

TASK_NAME

string

Task name.

TOPOLOGY

string

Topology version.

TRANSFORMER

string

toString representation of transformer.

CONTINUOUS_QUERIES

This view exposes information about currently running continuous queries.

Column Data Type Description

AUTO_UNSUBSCRIBE

boolean

True if query should be stopped when node disconnected or originating node left.

BUFFER_SIZE

int

Event batch buffer size.

CACHE_NAME

string

Cache name.

DELAYED_REGISTER

boolean

True if query would be started when corresponding cache started.

INTERVAL

long

Notify interval.

IS_EVENTS

boolean

True if used for subscription to remote events.

IS_MESSAGING

boolean

True if used for subscription to messages.

IS_QUERY

boolean

True if user started continuous query.

KEEP_BINARY

boolean

True if keepBinary enabled.

LAST_SEND_TIME

long

Last time event batch sent to query originating node.

LOCAL_LISTENER

string

toString representation of local listener.

LOCAL_TRANSFORMED_LISTENER

string

toString representation of local transformed listener.

NODE_ID

UUID

Originating node id.

NOTIFY_EXISTING

boolean

True if listener should be notified about existing entries.

OLD_VALUE_REQUIRED

boolean

True if old entry value should be included in event.

REMOTE_FILTER

string

toString representation of remote filter.

REMOTE_TRANSFORMER

string

toString representation of remote transformer.

ROUTINE_ID

UUID

Query ID.

TOPIC

string

Query topic name.

CLIENT_CONNECTIONS

This view exposes information about currently opened client connections: JDBC, ODBC, Thin clients.

Column Data Type Description

CONNECTION_ID

long

ID of the connection.

LOCAL_ADDRESS

IP

address IP address of the local node.

REMOTE_ADDRESS

IP

address IP address of the remote node.

TYPE

string

Type of the connection.

USER

string

User name.

VERSION

string

Protocol version.

CLIENT_CONNECTION_ATTRIBUTES

The CLIENT_CONNECTION_ATTRIBUTES view exposes user defined attributes of client connections (thin, JDBC, ODBC). Attributes for the connection are provided by clients. For example, attributes for java thin client can be specified using ClientConfiguration.setUserAttributes method.

Column Data Type Description

CONNECTION_ID

long

ID of the connection.

NAME

VARCHAR

Name of the attribute.

VALUE

VARCHAR

Attribute value.

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.

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.

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.

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.

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);
}

You can also query system views in the Control Center UI, form the SQL screen. Add SYS. before the view name; for example: select * FROM SYS.CLIENT_CONNECTIONS;.

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Last updated on Nov 20, 2024