docs/_docs/administrators-guide/config/cluster-config.adoc

// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements.  See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You under the Apache License, Version 2.0
// (the "License"); you may not use this file except in compliance with
// the License.  You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
= Cluster Configuration Parameters

Ignite 3 cluster configuration is shared across the whole cluster. Regardless of which node you apply the configuration on, it will be propogated to all nodes in the cluster.

== Garbage Collection

[source, json]
----
  "gc" : {
    "batchSize" : 5,
    "lowWatermark" : {
      "dataAvailabilityTime" : 600000,
      "updateFrequency" : 300000
    },
    "threads" : 16
  },
----

[cols="1,1,3",opts="header", stripes=none]
|======
|Property|Default|Description
|batchSize|5|Garbage collection batch size.
|lowWatermark.dataAvailabilityTime|600000|The duration outdated versions are available for.
|lowWatermark.updateFrequency|300000|The frequency of low watermark updates.
|threads|16|The number of threads used by garbage collector.
|======

== Metastorage Configuration

[source, json]
----
  "metaStorage" : {
    "idleSyncTimeInterval" : 500
  },
----

[cols="1,1,3",opts="header", stripes=none]
|======
|Property|Default|Description
|idleSyncTimeInterval|500|How long it takes to synchronize metastorage.

|======

== Metrics Configuration

[source, json]
----
  "metrics" : {
    "exporters" : [ ]
  },
----

[cols="1,1,3",opts="header", stripes=none]
|======
|Property|Default|Description
|exporters||The list of metric exporters currently used. For more information, see link:/metrics/configuring-metrics.adoc[Configuring Metrics].
|======

== Replication Configuration

[source, json]
----
  "replication" : {
    "idleSafeTimePropagationDuration" : 1000
  },
----

[cols="1,1,3",opts="header", stripes=none]
|======
|Property|Default|Description
|idleSafeTimePropagationDuration|1000| How long it takes for replication of data to be replicated to other nodes in cluster.

|======

== Schema Sync Configuration

[source, json]
----
  "schemaSync" : {
    "delayDuration" : 1000
  },
----

[cols="1,1,3",opts="header", stripes=none]
|======
|Property|Default|Description
|delayDuration|1000|The delay between schema being updated and synchronized across the cluster.

|======

== SQL Configuration

[source, json]
----
  "sql" : {
    "statementMemoryQuota" : "10K"
  },
----

[cols="1,1,3",opts="header", stripes=none]
|======
|Property|Default|Description
|statementMemoryQuota|10K|The amount of memory that can be used in by a single SQL statement.

|======

== Transactions Configuration

[source, json]
----
  "transaction" : {
    "abandonedCheckTs" : 5000
  }
}
----


[cols="1,1,3",opts="header", stripes=none]
|======
|Property|Default|Description
|abandonedCheckTs|5000|The amount of time after which the transaction is considered abandoned.
|======