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fix the description of dn-default-space-usage-thresholds #732

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CritasWang merged 1 commit into from
May 16, 2025
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fix the description of dn-default-space-usage-thresholds #732

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2 changes: 1 addition & 1 deletion src/UserGuide/Master/Table/User-Manual/Tiered-Storage_timecho.md
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Expand Up @@ -40,7 +40,7 @@ The specific parameter definitions and their descriptions are as follows.
| :----------------------------------------- | :------------------------- |:--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `dn_data_dirs` | `data/datanode/data` | Specifies storage directories grouped into tiers. | Tiers are separated by `;`, directories within the same tier are separated by `,`. <br>Cloud storage (e.g., AWS S3) can only be the last tier. <br>Use `OBJECT_STORAGE` to denote cloud storage. <br>Only one cloud storage bucket is allowed. |
| `tier_ttl_in_ms` | `-1` | Defines the TTL (in milliseconds) for each tier to determine the data range it manages. | Tiers are separated by `;`. <br>The number of tiers must match `dn_data_dirs`. <br>`-1` means "no limit". |
| `dn_default_space_usage_thresholds` | `0.85` | Defines the minimum remaining space threshold (as a ratio) for each tier. When a tier’s remaining space falls below this threshold, data is migrated to the next tier. <br>The last tier triggers `READ_ONLY` mode. | -Tiers are separated by `;`.The number of tiers must match `dn_data_dirs`. |
| `dn_default_space_usage_thresholds` | `0.85` | Define the maximum storage usage threshold ratio for each tier of data directories. When the used space exceeds this ratio, the data will be automatically migrated to the next tier. If the storage usage of the last tier surpasses this threshold, the system will be set to ​​READ_ONLY​​ mode. | -Tiers are separated by `;`.The number of tiers must match `dn_data_dirs`. |
| `object_storage_type` | `AWS_S3` | Cloud storage type. | all `AWS_S3` is supported. |
| `object_storage_bucket` | `iotdb_data` | Cloud storage bucket name. | Required only if cloud storage is used. |
| `object_storage_endpoiont` | (Empty) | Cloud storage endpoint. | Required only if cloud storage is used. |
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2 changes: 1 addition & 1 deletion src/UserGuide/Master/Tree/User-Manual/Tiered-Storage_timecho.md
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Expand Up @@ -38,7 +38,7 @@ The specific parameter definitions and their descriptions are as follows.
| ---------------------------------------- | ------------------------ | ------------------------------------------------------------ | ------------------------------------------------------------ |
| dn_data_dirs | data/datanode/data | specify different storage directories and divide the storage directories into tiers | Each level of storage uses a semicolon to separate, and commas to separate within a single level; cloud (OBJECT_STORAGE) configuration can only be used as the last level of storage and the first level can't be used as cloud storage; a cloud object at most; the remote storage directory is denoted by OBJECT_STORAGE |
| tier_ttl_in_ms | -1 | Define the maximum age of data for which each tier is responsible | Each level of storage is separated by a semicolon; the number of levels should match the number of levels defined by dn_data_dirs；"-1" means "unlimited". |
| dn_default_space_usage_thresholds | 0.85 | Define the minimum remaining space ratio for each tier data catalogue; when the remaining space is less than this ratio, the data will be automatically migrated to the next tier; when the remaining storage space of the last tier falls below this threshold, the system will be set to READ_ONLY | Each level of storage is separated by a semicolon; the number of levels should match the number of levels defined by dn_data_dirs |
| dn_default_space_usage_thresholds | 0.85 | Define the maximum storage usage threshold ratio for each tier of data directories. When the used space exceeds this ratio, the data will be automatically migrated to the next tier. If the storage usage of the last tier surpasses this threshold, the system will be set to ​​READ_ONLY​​ mode. | Each level of storage is separated by a semicolon; the number of levels should match the number of levels defined by dn_data_dirs |
| object_storage_type | `AWS_S3` | Cloud storage type. | all `AWS_S3` is supported. |
| object_storage_bucket | iotdb_data | Name of cloud storage bucket | Bucket definition in AWS S3; no need to configure if remote storage is not used |
| object_storage_endpoiont | | endpoint of cloud storage | endpoint of AWS S3；If remote storage is not used, no configuration required |
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2 changes: 1 addition & 1 deletion src/UserGuide/V1.3.x/User-Manual/Tiered-Storage_timecho.md
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Expand Up @@ -38,7 +38,7 @@ The specific parameter definitions and their descriptions are as follows.
| ---------------------------------------- | ------------------------ | ------------------------------------------------------------ | ------------------------------------------------------------ |
| dn_data_dirs | data/datanode/data | specify different storage directories and divide the storage directories into tiers | Each level of storage uses a semicolon to separate, and commas to separate within a single level; cloud (OBJECT_STORAGE) configuration can only be used as the last level of storage and the first level can't be used as cloud storage; a cloud object at most; the remote storage directory is denoted by OBJECT_STORAGE |
| tier_ttl_in_ms | -1 | Define the maximum age of data for which each tier is responsible | Each level of storage is separated by a semicolon; the number of levels should match the number of levels defined by dn_data_dirs；"-1" means "unlimited". |
| dn_default_space_usage_thresholds | 0.85 | Define the minimum remaining space ratio for each tier data catalogue; when the remaining space is less than this ratio, the data will be automatically migrated to the next tier; when the remaining storage space of the last tier falls below this threshold, the system will be set to READ_ONLY | Each level of storage is separated by a semicolon; the number of levels should match the number of levels defined by dn_data_dirs |
| dn_default_space_usage_thresholds | 0.85 | Define the maximum storage usage threshold ratio for each tier of data directories. When the used space exceeds this ratio, the data will be automatically migrated to the next tier. If the storage usage of the last tier surpasses this threshold, the system will be set to ​​READ_ONLY​​ mode.| Each level of storage is separated by a semicolon; the number of levels should match the number of levels defined by dn_data_dirs |
| object_storage_type | AWS_S3 | Cloud Storage Type | IoTDB currently only supports AWS S3 as a remote storage type, and this parameter can't be modified |
| object_storage_bucket | iotdb_data | Name of cloud storage bucket | Bucket definition in AWS S3; no need to configure if remote storage is not used |
| object_storage_endpoiont | | endpoint of cloud storage | endpoint of AWS S3；If remote storage is not used, no configuration required |
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2 changes: 1 addition & 1 deletion src/UserGuide/dev-1.3/User-Manual/Tiered-Storage_timecho.md
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Expand Up @@ -38,7 +38,7 @@ The specific parameter definitions and their descriptions are as follows.
| ---------------------------------------- | ------------------------ | ------------------------------------------------------------ | ------------------------------------------------------------ |
| dn_data_dirs | data/datanode/data | specify different storage directories and divide the storage directories into tiers | Each level of storage uses a semicolon to separate, and commas to separate within a single level; cloud (OBJECT_STORAGE) configuration can only be used as the last level of storage and the first level can't be used as cloud storage; a cloud object at most; the remote storage directory is denoted by OBJECT_STORAGE |
| tier_ttl_in_ms | -1 | Define the maximum age of data for which each tier is responsible | Each level of storage is separated by a semicolon; the number of levels should match the number of levels defined by dn_data_dirs；"-1" means "unlimited". |
| dn_default_space_usage_thresholds | 0.85 | Define the minimum remaining space ratio for each tier data catalogue; when the remaining space is less than this ratio, the data will be automatically migrated to the next tier; when the remaining storage space of the last tier falls below this threshold, the system will be set to READ_ONLY | Each level of storage is separated by a semicolon; the number of levels should match the number of levels defined by dn_data_dirs |
| dn_default_space_usage_thresholds | 0.85 | Define the maximum storage usage threshold ratio for each tier of data directories. When the used space exceeds this ratio, the data will be automatically migrated to the next tier. If the storage usage of the last tier surpasses this threshold, the system will be set to ​​READ_ONLY​​ mode. | Each level of storage is separated by a semicolon; the number of levels should match the number of levels defined by dn_data_dirs |
| object_storage_type | AWS_S3 | Cloud Storage Type | IoTDB currently only supports AWS S3 as a remote storage type, and this parameter can't be modified |
| object_storage_bucket | iotdb_data | Name of cloud storage bucket | Bucket definition in AWS S3; no need to configure if remote storage is not used |
| object_storage_endpoiont | | endpoint of cloud storage | endpoint of AWS S3；If remote storage is not used, no configuration required |
Expand Down
2 changes: 1 addition & 1 deletion src/UserGuide/latest-Table/User-Manual/Tiered-Storage_timecho.md
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Original file line number Diff line number Diff line change
Expand Up @@ -40,7 +40,7 @@ The specific parameter definitions and their descriptions are as follows.
| :----------------------------------------- | :------------------------- |:--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `dn_data_dirs` | `data/datanode/data` | Specifies storage directories grouped into tiers. | Tiers are separated by `;`, directories within the same tier are separated by `,`. <br>Cloud storage (e.g., AWS S3) can only be the last tier. <br>Use `OBJECT_STORAGE` to denote cloud storage. <br>Only one cloud storage bucket is allowed. |
| `tier_ttl_in_ms` | `-1` | Defines the TTL (in milliseconds) for each tier to determine the data range it manages. | Tiers are separated by `;`. <br>The number of tiers must match `dn_data_dirs`. <br>`-1` means "no limit". |
| `dn_default_space_usage_thresholds` | `0.85` | Defines the minimum remaining space threshold (as a ratio) for each tier. When a tier’s remaining space falls below this threshold, data is migrated to the next tier. <br>The last tier triggers `READ_ONLY` mode. | -Tiers are separated by `;`.The number of tiers must match `dn_data_dirs`. |
| `dn_default_space_usage_thresholds` | `0.85` | Define the maximum storage usage threshold ratio for each tier of data directories. When the used space exceeds this ratio, the data will be automatically migrated to the next tier. If the storage usage of the last tier surpasses this threshold, the system will be set to ​​READ_ONLY​​ mode. | -Tiers are separated by `;`.The number of tiers must match `dn_data_dirs`. |
| `object_storage_type` | `AWS_S3` | Cloud storage type. | all `AWS_S3` is supported. |
| `object_storage_bucket` | `iotdb_data` | Cloud storage bucket name. | Required only if cloud storage is used. |
| `object_storage_endpoiont` | (Empty) | Cloud storage endpoint. | Required only if cloud storage is used. |
Expand Down
2 changes: 1 addition & 1 deletion src/UserGuide/latest/User-Manual/Tiered-Storage_timecho.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,7 @@ The specific parameter definitions and their descriptions are as follows.
| ---------------------------------------- | ------------------------ | ------------------------------------------------------------ | ------------------------------------------------------------ |
| dn_data_dirs | data/datanode/data | specify different storage directories and divide the storage directories into tiers | Each level of storage uses a semicolon to separate, and commas to separate within a single level; cloud (OBJECT_STORAGE) configuration can only be used as the last level of storage and the first level can't be used as cloud storage; a cloud object at most; the remote storage directory is denoted by OBJECT_STORAGE |
| tier_ttl_in_ms | -1 | Define the maximum age of data for which each tier is responsible | Each level of storage is separated by a semicolon; the number of levels should match the number of levels defined by dn_data_dirs；"-1" means "unlimited". |
| dn_default_space_usage_thresholds | 0.85 | Define the minimum remaining space ratio for each tier data catalogue; when the remaining space is less than this ratio, the data will be automatically migrated to the next tier; when the remaining storage space of the last tier falls below this threshold, the system will be set to READ_ONLY | Each level of storage is separated by a semicolon; the number of levels should match the number of levels defined by dn_data_dirs |
| dn_default_space_usage_thresholds | 0.85 | Define the maximum storage usage threshold ratio for each tier of data directories. When the used space exceeds this ratio, the data will be automatically migrated to the next tier. If the storage usage of the last tier surpasses this threshold, the system will be set to ​​READ_ONLY​​ mode. | Each level of storage is separated by a semicolon; the number of levels should match the number of levels defined by dn_data_dirs |
| object_storage_type | `AWS_S3` | Cloud storage type. | all `AWS_S3` is supported. |
| object_storage_bucket | iotdb_data | Name of cloud storage bucket | Bucket definition in AWS S3; no need to configure if remote storage is not used |
| object_storage_endpoiont | | endpoint of cloud storage | endpoint of AWS S3；If remote storage is not used, no configuration required |
Expand Down
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