Release notes from iotdb

Apache IoTDB 1.3.7

2026-03-04T07:52:09Z

Features & Improvements

Others: Remove risky RPC interfaces.
Others: Remove JEXL functions.
Others: Check naming when creating a Pipe.
Others: Change the default client RPC service address to 127.0.0.1.
Others: Modify code to make internal services bind to the value specified by dn_internal_address instead of the default address.

Bugs

Fixed an issue in the partition table automatic deletion logic: Only TTL configured at the DB level takes effect, using the maximum TTL value within the DB.

Full Changelog: v1.3.6...v1.3.7

Apache IoTDB 2.0.7

2026-03-11T06:16:39Z

Features & Improvements

Others: Remove risky RPC interfaces.
Others: Remove JEXL functions.
Others: Check naming when creating a Pipe.
Others: Change the default client RPC service address to 127.0.0.1.
Others: Modify code to make internal services bind to the value specified by dn_internal_address instead of the default address.

Bugs

Fixed an issue in the partition table automatic deletion logic: Only TTL configured at the DB level takes effect, using the maximum TTL value within the DB.

Full Changelog: v2.0.6...v2.0.7

Apache IoTDB 2.0.6

2026-01-22T04:24:01Z

Features & Improvements

Data Query: Supports table model query and write-back functions.
Data Query: The MATCH RECOGNIZE feature for table models supports aggregate functions to capture continuous data for analysis and calculation.
Data Query: Added built-in scalar functions bit manipulation functions for table models.
Data Query: Added pushdown-enabled EXTRACT time function for table models.
Others: Fixed security vulnerabilities CVE-2025-12183, CVE-2025-66566 and CVE-2025-11226.
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Bugs

Fixed the issue where executing queries with CASE WHEN throws an internal server error.
Fixed the issue where creating a view succeeds but querying the view fails when the tree model database name is the same as the device name in tree-to-table scenarios.
Fixed the issue where the automatic database creation function fails subsequently if a database is deleted after successful table model data synchronization, and the database is not restarted.
Fixed the issue where modifying the password of a user that failed to be created throws an internal server error.
Fixed the issue where an error is thrown when using the IF PERMITTED clause to modify sequence encoding and compression settings.
Fixed the issue where querying BLOB data types via the tree model RESTAPI interface /rest/v2/query returns garbled results.
Fixed the issue where incorrect exception information is displayed when checking pipe status after creating a pipe in a table model that only contains tree-to-table views.
Fixed the issue where the number of server connections keeps increasing when using a user without MAINTAIN permission (non-root user in table models) in a Session.
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Full Changelog: v2.0.5...v2.0.6

Apache IoTDB 1.3.6

2026-01-07T01:47:32Z

Features & Improvements

Data Query: Optimized query performance for multiple scenarios, including the multi-series Last query.
Data Query: Added the FastLastQuery interface to the Java SDK, supporting more efficient Last query operations.
Data Query: Adjusted the tree-model fetchSchema to return data in segmented streaming mode, improving response speed in large-data-volume scenarios.
Storage Management: Optimized memory management to avoid memory leak risks and ensure long-term stable system operation.
Storage Management: Optimized the file compaction mechanism to enhance compaction efficiency and reduce system storage resource consumption.
Data Synchronization: Optimized Pipe SQL parameter configurations to support specifying asynchronous loading methods.
Data Synchronization: Added a syntactic sugar feature that automatically splits full-volume Pipe creation SQL into real-time synchronization and historical synchronization.
System Management: Added a global configuration item for data type compression methods, supporting on-demand adjustment of storage compression strategies.
Others: Fixed security vulnerabilities CVE-2025-12183, CVE-2025-66566 and CVE-2025-11226.
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Bugs

Fixed the issue where selecting discontinuous sequence files for the settle task from the sequence zone under device-level TTL would trigger an overlap error during execution.
Fixed the issue where running the pattern_match custom function in tree-model SQL (3C3D deployment) would throw an error indicating "tsDataType" is null.
Fixed the issue where TTL would continuously write data into the modification cache in fast compaction mode, resulting in slow compaction speed.
Fixed the stack overflow issue that occurred when performing value filter queries with a large number of devices without adding the align by device clause.
Fixed the issue where loading TsFiles with empty value chunks across time partitions would generate TsFiles with misaligned chunks.
Fixed the incorrect processing logic of TransformOperator for empty TsBlocks.
Fixed the issue where the number of server connections would keep increasing when using a user without MAINTAIN permission in a Session.
Fixed the issue where Load would ignore mods import under certain special circumstances (e.g., mismatched aligned types or inconsistent table schemas).
Fixed the issue where data that had been deleted would be resynchronized to the receiver if mod files existed when Pipe pattern was configured.
Fixed the issue where info logs related to TTL checks would still be printed during compaction scheduling even when TTL was not configured.
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Full Changelog: v1.3.5...v1.3.6

Apache IoTDB 1.3.5

2025-09-11T08:47:31Z

Improvements

Storage Module: Optimize user password encryption by changing the algorithm to SHA-256
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Bugs

Fixed the array out-of-bounds exception in cross-Region aggregate query with align by device
Fixed the error in aggregate queries with order by time + align by device for single or multiple devices spanning across Regions
Fixed the "out of memory" error in query with large TEXT objects + align by device + order by time
Fixed the issue where the last query with where time > X and time < X was not applied to partitioned table fetching, resulting in failure to hit PartitionCache
Fixed the error in using change_point function + align by device when single device data spans multiple Regions
Fixed the OOM (Out of Memory) issue caused by the asynchronous submission queue of pipeTransferFile
Fixed the memory leak issue in pipe password detection
For the pipe receiver and during Load, change the behavior of'clear schema cache' to 'update last cache'
Optimize the loading speed of TsFile when there are a large number of measuring points and the mods file contains deletions of a large number of measuring points
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Full Changelog: v1.3.4-1...v1.3.5

Apache IoTDB 2.0.5

2025-08-21T03:02:45Z

Features & Improvements

Data Query: Support manual creation of tree-to-table views
Data Query: Table model adds window functions
Data Query: Table model adds the aggregate function approx_most_frequent
Data Query: Table model JOIN function expansion, supporting LEFT & RIGHT JOIN, ASOF LEFT JOIN
Data Query: Table model supports row pattern recognition, enabling capture of continuous data for analysis and calculation
Storage Management: Table model adds multiple system tables, such as: VIEWS (table view information), MODELS (model information), etc.
AI Management: AINode adds two built-in models: Timer-XL and Timer-Sundial
AI Management: AINode supports inference functions for tree models and table models
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Bugs

Fixed the issue where the where time > X and time < X in last query was not applied to partitioned table fetching, failing to hit PartitionCache
Fixed the error in aggregate query with order by time + align by device for single device across regions
Fixed the error in aggregate query with order by time + align by device for multiple devices across regions
Data synchronization batching supports sink.batch.max-delay-ms, providing more fine-grained cache time control
Fixed the potential NPE issue when the tablet contains null values during data synchronization with sink format=tsfile
Fixed the incorrect processing result of pipe processor when writing tablets with null values with duplicate timestamps
Fixed the issue of tree model load updating table model schema cache
Fixed the issue where disruptor queue close could not be completed, which might cause the DN stop script to get stuck
Fixed multiple issues of data synchronization in normal scenarios, restart scenarios, and deletion scenarios
Fixed the time formatting issue when exporting table model to csv
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New Contributors

@jtmer made their first contribution in #15468
@Young-Leo made their first contribution in #14423

Full Changelog: v2.0.4...v2.0.5

Apache IoTDB 2.0.4

2025-07-09T07:07:45Z

Features & Improvements

Data Query: Added user-defined table functions (UDTF) and various built-in table functions to the table model.
Data Query: Added support for ASOF INNER JOIN on time columns in the table model.
Data Query: Added the approximate aggregation function approx_count_distinct to the table model.
Stream Processing: Added support for asynchronous loading of TsFile through SQL.
System Management: Added support for disaster recovery load balancing strategy in replica selection during scaling down.
System Management: Adapted to Windows Server 2025.
Scripts and Tools: Categorized and organized script tools, and separated Windows-specific scripts.
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Bugs

Fixed the memory leak issue in the WAL compression buffer.
Fixed the issue where the async connector gets stuck after running for a long time.
Fixed the issue where data subscription cannot be terminated after using data export scripts.
Fixed the issue where pipe restarts frequently due to insertnode and resource management memory problems under memory pressure.
Fixed the NPE issue triggered during memory statistics estimation on the data synchronization receiver end.
Fixed the error when configuring ConsumerConstant.NODE_URLS_KEY as a cluster address while using SubscriptionPullConsumer to consume data.
Fixed the deadlock issue on DN startup caused by concurrent agent pipe metadata fetching and CN metadata pushing.
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New Contributors

@q977734161 made their first contribution in #15322

Full Changelog: v2.0.3...v2.0.4

Apache IoTDB 2.0.3

2025-05-30T07:51:23Z

Features & Improvements

Data Query: Added new aggregate function count_if and scalar functions greatest / least to the table model.
Data Query: Significantly improved the performance of full-table count(*) queries in the table model.
AI Management: Added timestamps to the results returned by AINode.
System Management: Optimized the performance of the table model's metadata module.
System Management: Enabled the table model to actively listens and loads TsFile.
System Management: Added support for TsBlock deserialization in the Python and Go client query interfaces.
Ecosystem Integration: Expanded the table model's ecosystem to integrate with Spark.
Scripts and Tools: The import-schema and export-schema scripts now support importing and exporting metadata for the table model.
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Bugs

Fixed the issue where a single write request exceeding the total size of the WAL queue caused write queries to hang.
Fixed the issue where the receiver experienced OOM (Out of Memory) after resuming synchronization following a long period of inactivity.
Fixed the issue where repeatedly setting TTL for DB and Table led to inserted data being unqueryable and returning an empty list.
Fixed the issue where a regular user with create+insert permissions on a table encountered exceptions when loading tsfile.
Fixed the issue where passwords were logged when SessionPool getSession timed out.
Fixed the issue in the Go client tree model query interface where the absence of a check for the Time column led to an "index out of range [-1]" error when retrieving Time column data.
Fixed the issue where distinct hits aggregate pushdown optimization and is used with group by date_bin, causing execution exceptions in aggregate queries.
Fixed the issue of whitespace characters at the beginning and end of port and directory address parameters in the configuration file.
Fixed the issue where setting the maximum number of concurrent RPC clients less than the number of CPU threads caused DN startup failure.
Fixed the issue where using a template, after activation, writing to extended columns, and then creating a pipe, caused the series under the device to double.
Fixed the issue where metadata synchronization, creating a pipe after a template, caused the series to double when using show timeseries.
Fixed the issue where a regular user with INSERT permissions encountered exceptions when exporting metadata using export-schema.sh.
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Full Changelog: v2.0.2-1...v2.0.3

Apache IoTDB 2.0.2-1

2025-05-21T01:34:43Z

This is a bug-fix version of 2.0.2

Fix the bug that will remove the data partition table by mistake in case of us/ns time precision and using ttl

Apache IoTDB 1.3.4-1

2025-05-21T01:35:30Z

This is a bug-fix version of 1.3.4

Fix the bug that will remove the data partition table by mistake in case of us/ns time precision and using ttl