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| // 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, |
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| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| = Table Configuration |
| |
| In Ignite 3, you can set up cluster-wide policies for how tables should be handles. Additionally, you can configure the properties of individual tables and indexes to improve performance under your load. |
| |
| == Generic Settings |
| |
| Generic configuration settings are applied to all tables and indexes in the cluster. Below is the list of properties: |
| |
| [cols="1,1,3",opts="header", stripes=none] |
| |=== |
| |Property|Default|Description |
| |
| |gcThreads|16| Number of CPU threads dedicated to garbage collection. |
| |globalIdCounter|0|Current global ID of the table. Incremented automatically when a new table is created. |
| |lowWatermark.dataAvailabilityTime|2700000|The duration deleted data is kept in database, in milliseconds. |
| |lowWatermark.updateFrequency|300000| Low watermark update frequency (in milliseconds). |
| |=== |
| |
| |
| == Table Configuration |
| |
| Table configuration parameters can be used to fine tune table parameters manually to improve performance. |
| |
| [cols="1,1,3",opts="header", stripes=none] |
| |=== |
| |Property|Default|Description |
| |
| |name||The name of the table. |
| |tableId|1|The ID of the table. |
| |zoneId|0|The ID of the distribution zone the table belongs to. |
| |columns||The list of columns in the table. |
| |primaryKey||The table's primary key. |
| |
| |=== |
| |
| == Index Configuration |
| |
| Index configuration parameters can be used to fine tune index parameters manually to improve performance. |
| |
| [cols="1,1,3",opts="header", stripes=none] |
| |=== |
| |Property|Default|Description |
| |
| |type||The name of the index type. |
| |id||Index ID. |
| |name||Index name. |
| |tableId||The ID of the table the index. |
| |=== |
