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fix compaction params #943

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Merged
CritasWang merged 1 commit into from
Dec 26, 2025
Merged

fix compaction params #943

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88 changes: 44 additions & 44 deletions src/UserGuide/Master/Table/Reference/System-Config-Manual.md
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Original file line number Diff line number Diff line change
Expand Up @@ -1796,48 +1796,48 @@ The `iotdb-system.properties` file contains various configurations for managing

- cross_performer

| Name | cross_performer |
| ----------- | ------------------------------------------------------- |
| Description | the compaction performer of cross space compaction task |
| Type | String |
| Default | fast |
| Effective | Restart required. |
| Name | cross_performer |
| ----------- |-----------------------------------------------------------|
| Description | the compaction performer of cross space compaction task, Options: read_point, fast |
| Type | String |
| Default | fast |
| Effective | Hot reload . |

- inner_seq_selector

| Name | inner_seq_selector |
| ----------- | ---------------------------------------------------- |
| Description | the selector of inner sequence space compaction task |
| Type | String |
| Default | size_tiered_multi_target |
| Effective | Hot reload |
| Name | inner_seq_selector |
| ----------- |--------------------------------------------------------|
| Description | the selector of inner sequence space compaction task, Options: size_tiered_single_target,size_tiered_multi_target |
| Type | String |
| Default | size_tiered_multi_target |
| Effective | Hot reload |

- inner_seq_performer

| Name | inner_seq_performer |
| ----------- | ----------------------------------------------------- |
| Description | the performer of inner sequence space compaction task |
| Type | String |
| Default | read_chunk |
| Effective | Restart required. |
| Name | inner_seq_performer |
| ----------- |---------------------------------------------------------|
| Description | the performer of inner sequence space compaction task, Options: read_chunk, fast |
| Type | String |
| Default | read_chunk |
| Effective | Hot reload |

- inner_unseq_selector

| Name | inner_unseq_selector |
| ----------- | ------------------------------------------------------ |
| Description | the selector of inner unsequence space compaction task |
| Type | String |
| Default | size_tiered_multi_target |
| Effective | Hot reload |
| Name | inner_unseq_selector |
| ----------- |----------------------------------------------------------|
| Description | the selector of inner unsequence space compaction task, Options: size_tiered_single_target,size_tiered_multi_target |
| Type | String |
| Default | size_tiered_multi_target |
| Effective | Hot reload |

- inner_unseq_performer

| Name | inner_unseq_performer |
| ----------- | ------------------------------------------------------- |
| Description | the performer of inner unsequence space compaction task |
| Type | String |
| Default | fast |
| Effective | Restart required. |
| Name | inner_unseq_performer |
| ----------- |-----------------------------------------------------------|
| Description | the performer of inner unsequence space compaction task, Options: read_point, fast |
| Type | String |
| Default | fast |
| Effective | Hot reload |

- compaction_priority

Expand All @@ -1846,7 +1846,7 @@ The `iotdb-system.properties` file contains various configurations for managing
| Description | The priority of compaction executionINNER_CROSS: prioritize inner space compaction, reduce the number of files firstCROSS_INNER: prioritize cross space compaction, eliminate the unsequence files firstBALANCE: alternate two compaction types |
| Type | String |
| Default | INNER_CROSS |
| Effective | 重启服务生效 |
| Effective | Restart required. |

- candidate_compaction_task_queue_size

Expand Down Expand Up @@ -1897,19 +1897,19 @@ The `iotdb-system.properties` file contains various configurations for managing

| Name | target_chunk_size |
| ----------- | ------------------------------------------------------------ |
| Description | The target chunk size in compaction and when memtable reaches this threshold, flush the memtable to disk. |
| Description | The target chunk size in flushing and compaction. If the size of a timeseries in memtable exceeds this, the data will be flushed to multiple chunks.|
| Type | Int64 |
| Default | 1048576 |
| Default | 1600000 |
| Effective | Restart required. |

- target_chunk_point_num

| Name | target_chunk_point_num |
| ----------- | ------------------------------------------------ |
| Description | The target point nums in one chunk in compaction |
| Type | int32 |
| Default | 100000 |
| Effective | Restart required. |
| Name | target_chunk_point_num |
| ----------- |-----------------------------------------------------------------|
| Description | The target point nums in one chunk in flushing and compaction. If the point number of a timeseries in memtable exceeds this, the data will be flushed to multiple chunks. |
| Type | Int64 |
| Default | 100000 |
| Effective | Restart required. |

- chunk_size_lower_bound_in_compaction

Expand All @@ -1922,12 +1922,12 @@ The `iotdb-system.properties` file contains various configurations for managing

- chunk_point_num_lower_bound_in_compaction

| Name | chunk_point_num_lower_bound_in_compaction |
| ----------- | ------------------------------------------------------------ |
| Name | chunk_point_num_lower_bound_in_compaction |
| ----------- |------------------------------------------------------------------------------------------|
| Description | If the chunk point num is lower than this threshold, it will be deserialized into points |
| Type | int32 |
| Default | 100 |
| Effective | Restart required. |
| Type | Int64 |
| Default | 100 |
| Effective | Restart required. |

- inner_compaction_candidate_file_num

Expand Down
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