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| # Maintenance Statement |
| |
| ## 1. Status Checking |
| |
| ### 1.1 Viewing the Connected Model |
| |
| **Description**: Returns the current SQL dialect mode (`Tree` or `Table`). |
| |
| **Syntax**: |
| |
| ```SQL |
| showCurrentSqlDialectStatement |
| : SHOW CURRENT_SQL_DIALECT |
| ; |
| ``` |
| |
| **Example**: |
| |
| ```SQL |
| IoTDB> SHOW CURRENT_SQL_DIALECT; |
| ``` |
| |
| **Result：** |
| |
| ```SQL |
| +-----------------+ |
| |CurrentSqlDialect| |
| +-----------------+ |
| | TREE| |
| +-----------------+ |
| ``` |
| |
| ### 1.2 Viewing the Cluster Version |
| |
| **Description**: Returns the current cluster version. |
| |
| **Syntax**: |
| |
| ```SQL |
| showVersionStatement |
| : SHOW VERSION |
| ; |
| ``` |
| |
| **Example**: |
| |
| ```SQL |
| IoTDB> SHOW VERSION; |
| ``` |
| |
| **Result**: |
| |
| ```Plain |
| +-------+---------+ |
| |Version|BuildInfo| |
| +-------+---------+ |
| |2.0.1.2| 1ca4008| |
| +-------+---------+ |
| ``` |
| |
| ### 1.3 Viewing Cluster Key Parameters |
| |
| **Description**: Returns key parameters of the current cluster. |
| |
| **Syntax**: |
| |
| ```SQL |
| showVariablesStatement |
| : SHOW VARIABLES |
| ; |
| ``` |
| |
| Key Parameters: |
| |
| 1. **ClusterName**: The name of the current cluster. |
| 2. **DataReplicationFactor**: Number of data replicas per DataRegion. |
| 3. **SchemaReplicationFactor**: Number of schema replicas per SchemaRegion. |
| 4. **DataRegionConsensusProtocolClass**: Consensus protocol class for DataRegions. |
| 5. **SchemaRegionConsensusProtocolClass**: Consensus protocol class for SchemaRegions. |
| 6. **ConfigNodeConsensusProtocolClass**: Consensus protocol class for ConfigNodes. |
| 7. **TimePartitionOrigin**: The starting timestamp of database time partitions. |
| 8. **TimePartitionInterval**: The interval of database time partitions (in milliseconds). |
| 9. **ReadConsistencyLevel**: The consistency level for read operations. |
| 10. **SchemaRegionPerDataNode**: Number of SchemaRegions per DataNode. |
| 11. **DataRegionPerDataNode**: Number of DataRegions per DataNode. |
| 12. **SeriesSlotNum**: Number of SeriesSlots per DataRegion. |
| 13. **SeriesSlotExecutorClass**: Implementation class for SeriesSlots. |
| 14. **DiskSpaceWarningThreshold**: Disk space warning threshold (in percentage). |
| 15. **TimestampPrecision**: Timestamp precision. |
| |
| **Example**: |
| |
| ```SQL |
| IoTDB> SHOW VARIABLES; |
| ``` |
| |
| **Result**: |
| |
| ```Plain |
| +----------------------------------+-----------------------------------------------------------------+ |
| | Variable| Value| |
| +----------------------------------+-----------------------------------------------------------------+ |
| | ClusterName| defaultCluster| |
| | DataReplicationFactor| 1| |
| | SchemaReplicationFactor| 1| |
| | DataRegionConsensusProtocolClass| org.apache.iotdb.consensus.iot.IoTConsensus| |
| |SchemaRegionConsensusProtocolClass| org.apache.iotdb.consensus.ratis.RatisConsensus| |
| | ConfigNodeConsensusProtocolClass| org.apache.iotdb.consensus.ratis.RatisConsensus| |
| | TimePartitionOrigin| 0| |
| | TimePartitionInterval| 604800000| |
| | ReadConsistencyLevel| strong| |
| | SchemaRegionPerDataNode| 1| |
| | DataRegionPerDataNode| 0| |
| | SeriesSlotNum| 1000| |
| | SeriesSlotExecutorClass|org.apache.iotdb.commons.partition.executor.hash.BKDRHashExecutor| |
| | DiskSpaceWarningThreshold| 0.05| |
| | TimestampPrecision| ms| |
| +----------------------------------+-----------------------------------------------------------------+ |
| ``` |
| |
| ### 1.4 Viewing the Current Timestamp of Database |
| |
| **Description**: Returns the current timestamp of the database. |
| |
| **Syntax**: |
| |
| ```SQL |
| showCurrentTimestampStatement |
| : SHOW CURRENT_TIMESTAMP |
| ; |
| ``` |
| |
| **Example**: |
| |
| ```SQL |
| IoTDB> SHOW CURRENT_TIMESTAMP; |
| ``` |
| |
| **Result**: |
| |
| ```Plain |
| +-----------------------------+ |
| | CurrentTimestamp| |
| +-----------------------------+ |
| |2025-02-17T11:11:52.987+08:00| |
| +-----------------------------+ |
| ``` |
| |
| ### 1.5 Viewing Executing Queries |
| |
| **Description**: Displays information about all currently executing queries. |
| |
| **Syntax**: |
| |
| ```SQL |
| showQueriesStatement |
| : SHOW (QUERIES | QUERY PROCESSLIST) |
| (WHERE where=booleanExpression)? |
| (ORDER BY sortItem (',' sortItem)*)? |
| limitOffsetClause |
| ; |
| ``` |
| |
| **Parameters**: |
| |
| 1. **WHERE Clause**: Filters the result set based on specified conditions. |
| 2. **ORDER BY Clause**: Sorts the result set based on specified columns. |
| 3. **limitOffsetClause**: Limits the number of rows returned. |
| 1. Format: `LIMIT <offset>, <row_count>`. |
| |
| **Columns in QUERIES Table**: |
| |
| - **time**: Timestamp when the query started. |
| - **queryid**: Unique ID of the query. |
| - **datanodeid**: ID of the DataNode executing the query. |
| - **elapsedtime**: Time elapsed since the query started (in seconds). |
| - **statement**: The SQL statement being executed. |
| - **WaitTimeInServer**: Cumulative time that the client request waits in the server for results to be returned, in seconds (supported since V2.0.10). |
| - **ClientIp**: IP address of the client that initiated the query (supported since V2.0.10). |
| - **Timeout**: Timeout of the query, in ms (supported since V2.0.10). |
| |
| **Example**: |
| |
| ```SQL |
| IoTDB> SHOW QUERIES WHERE elapsedtime > 0.003 |
| ``` |
| |
| **Result**: |
| |
| ```SQL |
| +-----------------------------+-----------------------+----------+-----------+--------------------------------------+----------------+---------+-------+ |
| | Time| QueryId|DataNodeId|ElapsedTime| Statement|WaitTimeInServer| ClientIp|Timeout| |
| +-----------------------------+-----------------------+----------+-----------+--------------------------------------+----------------+---------+-------+ |
| |2026-06-01T11:13:39.057+08:00|20260601_031339_00003_1| 1| 0.074|SHOW QUERIES WHERE elapsedtime > 0.003| 0.0736961|127.0.0.1| 60000| |
| +-----------------------------+-----------------------+----------+-----------+--------------------------------------+----------------+---------+-------+ |
| ``` |
| |
| ### 1.6 Viewing Region Information |
| |
| **Description**: Displays regions' information of the current cluster. |
| |
| **Syntax**: |
| |
| ```SQL |
| showRegionsStatement |
| : SHOW REGIONS |
| ; |
| ``` |
| |
| **Example**: |
| |
| ```SQL |
| IoTDB> SHOW REGIONS |
| ``` |
| |
| **Result**: |
| |
| ```SQL |
| +--------+------------+-------+-------------+-------------+-----------+----------+----------+-------+---------------+------+-----------------------+----------+ |
| |RegionId| Type| Status| Database|SeriesSlotNum|TimeSlotNum|DataNodeId|RpcAddress|RpcPort|InternalAddress| Role| CreateTime|TsFileSize| |
| +--------+------------+-------+-------------+-------------+-----------+----------+----------+-------+---------------+------+-----------------------+----------+ |
| | 9|SchemaRegion|Running|root.__system| 21| 0| 1| 0.0.0.0| 6667| 127.0.0.1|Leader|2025-08-01T17:37:01.555| | |
| | 10| DataRegion|Running|root.__system| 21| 21| 1| 0.0.0.0| 6667| 127.0.0.1|Leader|2025-08-01T17:37:01.556| 8.27 KB| |
| | 65|SchemaRegion|Running| root.ln| 1| 0| 1| 0.0.0.0| 6667| 127.0.0.1|Leader|2025-08-25T14:46:50.113| | |
| | 66| DataRegion|Running| root.ln| 1| 1| 1| 0.0.0.0| 6667| 127.0.0.1|Leader|2025-08-25T14:46:50.425| 524 B| |
| +--------+------------+-------+-------------+-------------+-----------+----------+----------+-------+---------------+------+-----------------------+----------+ |
| ``` |
| |
| ### 1.7 Viewing Available Nodes |
| |
| **Description**: Returns the RPC addresses and ports of all available DataNodes in the current cluster. Note: A DataNode is considered "available" if it is not in the REMOVING state. |
| |
| > This feature is supported starting from v2.0.8. |
| |
| **Syntax**: |
| |
| ```SQL |
| showAvailableUrlsStatement |
| : SHOW AVAILABLE URLS |
| ; |
| ``` |
| |
| **Example**: |
| |
| ```SQL |
| IoTDB> SHOW AVAILABLE URLS |
| ``` |
| |
| **Result**: |
| |
| ```SQL |
| +----------+-------+ |
| |RpcAddress|RpcPort| |
| +----------+-------+ |
| | 0.0.0.0| 6667| |
| +----------+-------+ |
| ``` |
| |
| ### 1.8 View Service Information |
| |
| **Description**: Returns service information (MQTT service, REST service) on all active DataNodes (in RUNNING or READ-ONLY state) in the current cluster. |
| |
| > This feature is supported starting from v2.0.8. |
| |
| #### Syntax: |
| ```sql |
| showServicesStatement |
| : SHOW SERVICES <ON dataNodeId> |
| ; |
| ``` |
| |
| #### Examples: |
| ```sql |
| IoTDB> SHOW SERVICES |
| IoTDB> SHOW SERVICES ON 1 |
| ``` |
| |
| Execution result: |
| ```sql |
| +--------------+-------------+---------+ |
| | Service Name | DataNode ID | State | |
| +--------------+-------------+---------+ |
| | MQTT | 1 | STOPPED | |
| | REST | 1 | RUNNING | |
| +--------------+-------------+---------+ |
| ``` |
| |
| ### 1.9 View Disk Space Usage |
| **Description**: Returns the disk space usage of the specified `pattern`, including the size of ChunkGroups and the size of Metadata. |
| |
| **Note**: Statistics are based on the actual size of data in TsFiles; therefore, deletions made via `mods` are not considered. |
| |
| > Supported since version 2.0.10 |
| |
| #### Syntax: |
| ```sql |
| showDiskUsageStatement |
| : SHOW DISK_USAGE FROM pathPattern |
| whereClause? |
| orderByClause? |
| rowPaginationClause? |
| ; |
| pathPattern |
| : ROOT (DOT nodeName)* |
| ; |
| ``` |
| |
| **Explanation**: The `pattern` is used to match devices, must start with `ROOT`, and intermediate nodes in the path support `*` or `**`. |
| |
| #### Result Set |
| | Column Name | Column Type | Description | |
| |---------------|-------------|----------------------------------| |
| | Database | string | Database name | |
| | DataNodeId | int32 | DataNode node ID | |
| | RegionId | int32 | Region ID | |
| | TimePartition | int64 | Time partition ID | |
| | SizeInBytes | int64 | Disk space occupied (in bytes) | |
| |
| #### Example: |
| ```sql |
| SHOW DISK_USAGE FROM root.ln.**; |
| ``` |
| |
| **Execution Result**: |
| ```bash |
| +--------+----------+--------+-------------+-----------+ |
| |Database|DataNodeId|RegionId|TimePartition|SizeInBytes| |
| +--------+----------+--------+-------------+-----------+ |
| | root.ln| 1| 13| 2932| 203| |
| +--------+----------+--------+-------------+-----------+ |
| ``` |
| |
| |
| ## 2. Status Setting |
| |
| ### 2.1 Setting the Connected Model |
| |
| **Description**: Sets the current SQL dialect mode to `Tree` or `Table` which can be used in both tree and table modes. |
| |
| **Syntax**: |
| |
| ```SQL |
| SET SQL_DIALECT = (TABLE | TREE); |
| ``` |
| |
| **Example**: |
| |
| ```SQL |
| IoTDB> SET SQL_DIALECT=TREE; |
| IoTDB> SHOW CURRENT_SQL_DIALECT; |
| ``` |
| |
| **Result**: |
| |
| ```SQL |
| +-----------------+ |
| |CurrentSqlDialect| |
| +-----------------+ |
| | TREE| |
| +-----------------+ |
| ``` |
| |
| ### 2.2 Updating Configuration Items |
| |
| **Description**: Updates configuration items. Changes take effect immediately without restarting if the items support hot modification. |
| |
| **Syntax**: |
| |
| ```SQL |
| setConfigurationStatement |
| : SET CONFIGURATION propertyAssignments (ON INTEGER_VALUE)? |
| ; |
| |
| propertyAssignments |
| : property (',' property)* |
| ; |
| |
| property |
| : identifier EQ propertyValue |
| ; |
| |
| propertyValue |
| : DEFAULT |
| | expression |
| ; |
| ``` |
| |
| **Parameters**: |
| |
| 1. **propertyAssignments**: A list of properties to update. |
| 1. Format: `property (',' property)*`. |
| 2. Values: |
| - `DEFAULT`: Resets the configuration to its default value. |
| - `expression`: A specific value (must be a string). |
| 2. **ON INTEGER_VALUE** **(Optional):** Specifies the node ID to update. |
| 1. If not specified or set to a negative value, updates all ConfigNodes and DataNodes. |
| |
| **Example**: |
| |
| ```SQL |
| IoTDB> SET CONFIGURATION ‘disk_space_warning_threshold’='0.05',‘heartbeat_interval_in_ms’='1000' ON 1; |
| ``` |
| |
| ### 2.3 Loading Manually Modified Configuration Files |
| |
| **Description**: Loads manually modified configuration files and hot-loads the changes. Configuration items that support hot modification take effect immediately. |
| |
| **Syntax**: |
| |
| ```SQL |
| loadConfigurationStatement |
| : LOAD CONFIGURATION localOrClusterMode? |
| ; |
| |
| localOrClusterMode |
| : (ON (LOCAL | CLUSTER)) |
| ; |
| ``` |
| |
| **Parameters**: |
| |
| 1. **localOrClusterMode** **(Optional):** |
| 1. Specifies the scope of configuration loading. |
| 2. Default: `CLUSTER`. |
| 3. Values: |
| - `LOCAL`: Loads configuration only on the DataNode directly connected to the client. |
| - `CLUSTER`: Loads configuration on all DataNodes in the cluster. |
| |
| **Example**: |
| |
| ```SQL |
| IoTDB> LOAD CONFIGURATION ON LOCAL; |
| ``` |
| |
| ### 2.4 Setting the System Status |
| |
| **Description**: Sets the system status to either `READONLY` or `RUNNING`. |
| |
| **Syntax**: |
| |
| ```SQL |
| setSystemStatusStatement |
| : SET SYSTEM TO (READONLY | RUNNING) localOrClusterMode? |
| ; |
| |
| localOrClusterMode |
| : (ON (LOCAL | CLUSTER)) |
| ; |
| ``` |
| |
| **Parameters**: |
| |
| 1. **RUNNING |** **READONLY**: |
| 1. **RUNNING**: Sets the system to running mode, allowing both read and write operations. |
| 2. **READONLY**: Sets the system to read-only mode, allowing only read operations and prohibiting writes. |
| 2. **localOrClusterMode** **(Optional):** |
| 1. **LOCAL**: Applies the status change only to the DataNode directly connected to the client. |
| 2. **CLUSTER**: Applies the status change to all DataNodes in the cluster. |
| 3. **Default**: `ON CLUSTER`. |
| |
| **Example**: |
| |
| ```SQL |
| IoTDB> SET SYSTEM TO READONLY ON CLUSTER; |
| ``` |
| |
| ## 3. Data Management |
| |
| ### 3.1 Flushing Data from Memory to Disk |
| |
| **Description**: Flushes data from the memory table to disk. |
| |
| **Syntax**: |
| |
| ```SQL |
| flushStatement |
| : FLUSH identifier? (',' identifier)* booleanValue? localOrClusterMode? |
| ; |
| |
| booleanValue |
| : TRUE | FALSE |
| ; |
| |
| localOrClusterMode |
| : (ON (LOCAL | CLUSTER)) |
| ; |
| ``` |
| |
| **Parameters**: |
| |
| 1. **identifier** **(Optional):** |
| 1. Specifies the name of the path to flush. |
| 2. If not specified, all paths are flushed. |
| 3. **Multiple Paths**: Multiple path names can be specified, separated by commas (e.g., `FLUSH root.ln, root.lnm.**`). |
| 2. **booleanValue** **(****Optional****)**: |
| 1. Specifies the type of data to flush. |
| 2. **TRUE**: Flushes only the sequential memory table. |
| 3. **FALSE**: Flushes only the unsequential MemTable. |
| 4. **Default**: Flushes both sequential and unsequential memory tables. |
| 3. **localOrClusterMode** **(****Optional****)**: |
| 1. **ON LOCAL**: Flushes only the memory tables on the DataNode directly connected to the client. |
| 2. **ON CLUSTER**: Flushes memory tables on all DataNodes in the cluster. |
| 3. **Default:** `ON CLUSTER`. |
| |
| **Example**: |
| |
| ```SQL |
| IoTDB> FLUSH root.ln TRUE ON LOCAL; |
| ``` |
| |
| ## 4. Data Repair |
| |
| ### 4.1 Starting Background Scan and Repair of TsFiles |
| |
| **Description**: Starts a background task to scan and repair TsFiles, fixing issues such as timestamp disorder within data files. |
| |
| **Syntax**: |
| |
| ```SQL |
| startRepairDataStatement |
| : START REPAIR DATA localOrClusterMode? |
| ; |
| |
| localOrClusterMode |
| : (ON (LOCAL | CLUSTER)) |
| ; |
| ``` |
| |
| **Parameters**: |
| |
| 1. **localOrClusterMode（Optional）**: |
| 1. **ON LOCAL**: Executes the repair task only on the DataNode directly connected to the client. |
| 2. **ON CLUSTER**: Executes the repair task on all DataNodes in the cluster. |
| 3. **Default:** `ON CLUSTER`. |
| |
| **Example**: |
| |
| ```SQL |
| IoTDB> START REPAIR DATA ON CLUSTER; |
| ``` |
| |
| ### 4.2 Pausing Background TsFile Repair Task |
| |
| **Description**: Pauses the background repair task. The paused task can be resumed by executing the `START REPAIR DATA` command again. |
| |
| **Syntax**: |
| |
| ```SQL |
| stopRepairDataStatement |
| : STOP REPAIR DATA localOrClusterMode? |
| ; |
| |
| localOrClusterMode |
| : (ON (LOCAL | CLUSTER)) |
| ; |
| ``` |
| |
| **Parameters**: |
| |
| 1. **localOrClusterMode** **(Optional):** |
| 1. **ON LOCAL**: Executes the pause command only on the DataNode directly connected to the client. |
| 2. **ON CLUSTER**: Executes the pause command on all DataNodes in the cluster. |
| 3. **Default:** `ON CLUSTER`. |
| |
| **Example**: |
| |
| ```SQL |
| IoTDB> STOP REPAIR DATA ON CLUSTER; |
| ``` |
| |
| ## 5. Query Termination |
| |
| ### 5.1 Terminating Queries |
| |
| **Description**: Terminates one or more running queries. |
| |
| **Syntax**: |
| |
| ```SQL |
| killQueryStatement |
| : KILL (QUERY queryId=string | ALL QUERIES) |
| ; |
| ``` |
| |
| **Parameters**: |
| |
| 1. **QUERY** **queryId:** Specifies the ID of the query to terminate. |
| |
| - To obtain the `queryId`, use the `SHOW QUERIES` command. |
| |
| 2. **ALL QUERIES:** Terminates all currently running queries. |
| |
| **Example**: |
| |
| Terminate a specific query: |
| |
| ```SQL |
| IoTDB> KILL QUERY 20250108_101015_00000_1; |
| ``` |
| |
| Terminate all queries: |
| |
| ```SQL |
| IoTDB> KILL ALL QUERIES; |
| ``` |
| |
| ## 6. Query Debugging |
| |
| ### 6.1 DEBUG SQL |
| |
| **Definition**: Add the `DEBUG` keyword at the beginning of an SQL query statement. During execution, debug logs will be output, including underlying file scan information involved in the query. |
| |
| > Supported since V2.0.10 |
| |
| #### Syntax: |
| ```sql |
| debugSQLStatement |
| : DEBUG ? query |
| ; |
| ``` |
| |
| **Description**: |
| * Log output directory: `logs/log_datanode_query_debug.log` |
| |
| #### Example: |
| 1. Execute the following SQL for a DEBUG query |
| ```sql |
| DEBUG SELECT * FROM root.ln.**; |
| ``` |
| |
| 2. Check the log content in `log_datanode_query_debug.log` to view the file scan information involved in the query. |
| |
| ```bash |
| 2026-03-24 10:06:18,755 [Query-Worker-Thread-3$20260324_020618_00052_1.1.0.0] INFO o.a.i.d.s.b.TimeSeriesMetadataCache:159 - Cache miss: root.ln.wf01.wt01.temperature in file: /home/iotdb/apache-iotdb/data/datanode/data/sequence/root.ln/13/2932/1773824951611-1-0-0.tsfile |
| 2026-03-24 10:06:18,757 [Query-Worker-Thread-3$20260324_020618_00052_1.1.0.0] INFO o.a.i.d.s.b.TimeSeriesMetadataCache:160 - Device: root.ln.wf01.wt01, all sensors: [temperature] |
| 2026-03-24 10:06:18,758 [Query-Worker-Thread-3$20260324_020618_00052_1.1.0.0] INFO o.a.i.d.s.b.BloomFilterCache:110 - get bloomFilter from cache where filePath is: /home/iotdb/apache-iotdb/data/datanode/data/sequence/root.ln/13/2932/1773824951611-1-0-0.tsfile |
| 2026-03-24 10:06:18,759 [Query-Worker-Thread-3$20260324_020618_00052_1.1.0.0] INFO o.a.i.d.s.b.TimeSeriesMetadataCache:227 - Get timeseries: root.ln.wf01.wt01.temperature metadata in file: /home/iotdb/apache-iotdb/data/datanode/data/sequence/root.ln/13/2932/1773824951611-1-0-0.tsfile from cache: TimeseriesMetadata{timeSeriesMetadataType=0, chunkMetaDataListDataSize=8, measurementId='temperature', dataType=DOUBLE, statistics=startTime: 1773824951259 endTime: 1773824951259 count: 1 [minValue:12.9,maxValue:12.9,firstValue:12.9,lastValue:12.9,sumValue:12.9], modified=false, isSeq=true, chunkMetadataList=[measurementId: temperature, datatype: DOUBLE, version: 0, Statistics: startTime: 1773824951259 endTime: 1773824951259 count: 1 [minValue:12.9,maxValue:12.9,firstValue:12.9,lastValue:12.9,sumValue:12.9], deleteIntervalList: null]}. |
| 2026-03-24 10:06:18,759 [Query-Worker-Thread-3$20260324_020618_00052_1.1.0.0] INFO o.a.i.d.s.d.r.r.c.m.DiskChunkMetadataLoader:97 - Modifications size is 0 for file Path: /home/iotdb/apache-iotdb/data/datanode/data/sequence/root.ln/13/2932/1773824951611-1-0-0.tsfile |
| 2026-03-24 10:06:18,759 [Query-Worker-Thread-3$20260324_020618_00052_1.1.0.0] INFO o.a.i.d.s.d.r.r.c.m.DiskChunkMetadataLoader:109 - After modification Chunk meta data list is: |
| 2026-03-24 10:06:18,759 [Query-Worker-Thread-3$20260324_020618_00052_1.1.0.0] INFO o.a.i.d.s.d.r.r.c.m.DiskChunkMetadataLoader:110 - measurementId: temperature, datatype: DOUBLE, version: 0, Statistics: startTime: 1773824951259 endTime: 1773824951259 count: 1 [minValue:12.9,maxValue:12.9,firstValue:12.9,lastValue:12.9,sumValue:12.9], deleteIntervalList: null |
| 2026-03-24 10:06:18,760 [Query-Worker-Thread-3$20260324_020618_00052_1.1.0.0] INFO o.a.i.d.s.b.ChunkCache:167 - get chunk from cache whose key is: ChunkCacheKey{filePath='/home/iotdb/apache-iotdb/data/datanode/data/sequence/root.ln/13/2932/1773824951611-1-0-0.tsfile', regionId=13, timePartitionId=2932, tsFileVersion=1, compactionVersion=0, offsetOfChunkHeader=27} |
| 2026-03-24 10:06:18,761 [pool-69-IoTDB-ClientRPC-Processor-1$20260324_020618_00052_1] INFO o.a.i.d.q.p.Coordinator:902 - debug select * from root.ln.** |
| ``` |
