VeloDB Cloud
Release Notes
Core Release Notes
v3.0

v3.0

This article describes the release notes for VeloDB Core v3.0.

Note VeloDB Core v3.0 was developed based on Apache Doris v2.0 (opens in a new tab).


v3.0.15 (July 17, 2025)

Bug Fixes

  • Fixed intermittent Routine Load backlogs and partition scaling issues with upstream Kafka topics.
  • Resolved core dumps during segment loading and abnormal Backend (BE) restarts.
  • Addressed slow export speeds and data loss when exporting aggregate tables.
  • Reduced excessive JVM memory usage on master nodes.
  • Eliminated Frontend (FE) out-of-memory (OOM) errors.
  • Suppressed duplicate warning logs caused by redundant close calls in the S3 FileWriter.

v3.0.14 (June 23, 2025)

Improvements

  • Optimized compaction scheduling to improve efficiency.
  • Resolved CPU spikes and HTTP interface latency caused by metrics spinlock contention.

Bug Fixes

  • Fixed inconsistent results in the extract_url_parameter function.
  • Addressed core dump issues in MoW (Merge-on-Write) backends and UDF execution.
  • Eliminated write failures and scheduling task disruptions caused by upgrade-time millisecond-level fluctuations.
  • Fixed backend core dumps triggered by Parquet file exports via OUTFILE.

v3.0.13 (May 9, 2025)

Improvements

  • Optimized handling of excessive delete markers in primary key tables to prevent data import and compaction failures.
  • Improved Routine Load with: Removal of the 60-second max_batch_interval restriction,added observability metrics,fixed abnormal job scheduling conflicts affecting other jobs.

Bug Fixes

  • Fixed audit log data loss issues.

v3.0.12 (February 19, 2025)

New Features

  • Added support for importing compressed JSON data formats via Stream Load.

Improvements

  • Optimized upload retry policies and connection timeouts to improve import stability.

Bug Fixes

  • Fixed an issue where high-frequency Stream Load operations could cause CPU usage of the coordinator node to spike to 100%.
  • Resolved memory leaks in the coordinator module during imports.
  • Fixed import failures caused by index file write errors.
  • Addressed potential upload failures during import processes.
  • Eliminated import failures caused by long-held locks in MoW (Merge-on-Write) operations.
  • Fixed Base Compaction failures triggered by Schema Changes.
  • Resolved Routine Load job stalling issues.
  • Corrected JSON double-value handling (previously processed as 0).
  • Fixed permission granting failures for Audit Log tables.
  • Addressed duplicate timestamp entries in Audit Log queries.
  • Eliminated duplicate SQL hash collisions.
  • Fixed UTF-8 encoding/decoding errors in inverted indexes.
  • Resolved false node decommissioning due to transient network fluctuations.
  • Fixed execution exceptions in INSERT INTO SELECT queries when returning empty results.

v3.0.11 (November 10, 2024)

Improvements

v3.0.10 (August 23, 2024)

Improvements

v3.0.9 (June 25, 2024)

Improvements

  • Merged all features, improvements and bug fixes from Apache Doris v2.0.11 (opens in a new tab).
  • Merged all features, improvements and bug fixes from VeloDB Core v3.0.8.
  • Optimized the calculation of delete bitmap in mow table, improving import speed and robustness.
  • Optimized the response speed of show data.
  • Optimized the reverse index and semi-structured data query performance.

Bug Fixes

  • Fixed the problem that too many copy into tasks caused warehouse OOM.
  • Fixed the problem that too many alter jobs may cause warehouse OOM.
  • Fixed the problem that warehouse metrics may be missing in multi-cluster scenarios.
  • Fixed the issue that some tablets are missing versions in extreme cases when importing multiple tablets in a single transaction.
  • Fixed the issue that the warehouse cannot immediately perceive the change in file cache size.
  • Fixed several JDBC external table connection issues.
  • Fixed the issue that ES Catalog cannot use esquery.
  • Fixed the issue of uneven balance and decommission stuck.

v3.0.8 (May 15, 2024)

New Features

  • Supported recycler speed limit.
  • Supported show proc statement.
  • Supported getting all json keys.

Improvements

  • Merged all features, improvements and bug fixes from Apache Doris v2.0.10 (opens in a new tab).
  • Optimized the time consumption of table creation.
  • Optimized the calculation speed delete bitmap in mow table to improve import throughput.
  • Optimized the query speed of mow table high-frequency import (multiple versions).
  • Optimized query efficiency.

Bug Fixes

  • Fixed the problem of incorrect indicators after rename cluster.
  • Fixed the problem of inaccurate traffic statistics after rename cluster.
  • Fixed the problem of incorrect format of show processlist.
  • Fixed the problem of failure due to insufficient memory of schema change.
  • Fixed the problem of import permission of audit log component.
  • Fixed the error of datetimev2 round function.
  • Fixed the problem that nullable planning may cause coredump.
  • Fixed the problem that nullable planning may cause wrong results.

v3.0.7 (March 31, 2024)

New Features

  • Supported audit log plug-in (audit log table needs to be created manually).

Improvements

  • Merged all features, improvements and bug fixes from Apache Doris v2.0.6 (opens in a new tab).
  • If the user does not set a default cluster when executing the query, the available (live, authorized) clusters will be selected in dictionary order of cluster names.
  • After the cluster automatically stopped, it is no longer necessary to explicitly use cluster to trigger automatic start of the cluster.
  • Optimized availability and performance of reverse index and log analysis scenarios.
  • The new optimizer optimizes ambiguous projection having syntax.
  • Improved the performance of reverse index compound in list.

Bug Fixes

  • Fixed the issue where a large number of delete requests triggered import failure.
  • Fixed the issue where the statistics logic repeatedly triggers SQL, causing the cluster's automatic stop logic to fail.
  • Fixed the issue with importing specified UTC time zone conversion errors.
  • Fixed the error of show process list from JDBC.
  • Fixed the problem of table attribute ttl_seconds being cleared to 0 after restart after checkpoint.
  • Fixed the date/month/year add function.

v3.0.6 (February 5, 2024)

New Features

  • Supported automatic analyze.
  • Supported wide table import.
  • Supported group commit (batch/real-time import).
  • Supported in left join infer.

Improvements

Bug Fixes

  • Fixed the issue where cluster restart may cause cluster permissions to become invalid.
  • Fixed the problem of failure to upgrade from VeloDB Core v2.4.x series version to v3.0.x series version.
  • Fixed the problem of misaligned output of the show processlist command.
  • Fixed the problem that altering table‘s attribute TTL may not take effect (the displayed value is 0).
  • Fixed the issue where the queries would occasionally receive the error failed to initialize storage reader.
  • Fixed the issue where abnormal paths in parquet reader may cause memory leaks.
  • Fixed the pushdown problem of date_sub, data_add, to_date functions.
  • Fixed the issue where the colocate jion plan failed due to colocate participating in balance.
  • Fixed the problem that altering colocate‘s attribute replay would fail.
  • Fixed the issue where data cannot be queried due to special characters in the delete condition.
  • Fixed the issue of read query reporting NOT_IMPLEMENTED_ERROR with a small probability.
  • Fixed the issue where importing time zone conversions resulted in incorrect data.
  • Fixed the issue where passing negative values to substr() would cause coredump.

v3.0.5 (December 20, 2023)

New Features

  • Provided stream load compatible API.
/api/{db}/{table}/_stream_load_2pc
  • Opened the whitelist of show /proc/statistic.

Improvements

  • Merged all features (it is not recommended to enable automatic analyze function), improvements and bug fixes from Apache Doris v2.0.3 (opens in a new tab).
  • Improved the stability of mow table import.
  • Improved the speed of dynamic table creation.
  • Improved the performance of Plan generation.
  • Optimized decimal operation behavior.
  • Improved stability.

Bug Fixes

  • Fixed the issue where insufficient S3 buffer may cause writing to become stuck.
  • Fixed the problem that the query may get an error "failed to find version path" in multi-cluster scenarios.
  • Fixed the problem that the Plan may cross clusters in multi-cluster scenarios.
  • Fixed the problem that dynamic partition cannot create a new partition due to changing the length of varchar column type.
  • Fixed the issue that show create table decimal is not compatible with SmartBI.
  • Fixed the issue where column type conversion functionality might become unavailable.
  • Fixed the problem that row storage table attributes did not take effect.
  • Fixed the issue where base compaction could fail.
  • Fixed the problem that single point query may not find the latest data.
  • Fixed the issue where copy into duplicate files needs to wait for timeout.
  • Fixed the issue where query_parallel_instance_num could be divided by 0.
  • Fixed the issue where cache hit rate calculation may be inaccurate.
  • Fixed the problem that ngram index does not take effect.

v3.0.4 (November 23, 2023)

New Features

  • Supported show proc current_stmt。

Improvements

  • Enhanced access control security.
  • Enhanced the reliability of uploaded data verification.
  • Improved warehouse metadata service availability.
  • Optimized the error message when creating table dynamic_partition.replication_num.

Bug Fixes

  • Fixed an issue where upgrading VeloDB Core v2.4 to v3.0 may cause copy into to fail.
  • Fixed an issue where importing authorization using external stage may fail.
  • Fixed an issue where routine load import may fail.
  • Fixed an issue where mow table import may fail.
  • Fixed an issue where real-time writing of insert statements may fail.
  • Fixed tpcds performance degradation issue.
  • Fixed the problem that non-global session variables may not take effect.
  • Fixed the issue where a large number of where conditions in a query would cause high CPU consumption and slow execution.

v3.0.3 (November 2, 2023)

New Features

  • Supported Doris Clean Label.
  • Stream Load cloud API is compatible with Doris community behavior.
  • The warehouse had built-in JDBC Driver.

Improvements

  • The new optimizer top n supported runtime filter clipping by default.

Bug Fixes

  • Fixed the problem of slow query response due to resource leakage in the warehouse.
  • Fixed the problem that function statement disabling does not take effect.
  • Fixed an issue where schema change would fail when re-arranging.

v3.0.2 (October 17, 2023)

New Features

  • Added JDBC Driver URL whitelist function for S3 protocol import.

Improvements

  • Merged all features, improvements and bug fixes from Apache Doris v2.0.2 (opens in a new tab).
  • Merged all features, improvements and bug fixes from VeloDB Core v2.3.10 and v2.4.4.
  • Reduced the time to obtain metadata during Plan and speeds up Plan generation.
  • Added time-consuming statistics for query profile accessing metadata.
  • Balanced and optimized resource utilization.

Bug Fixes

  • Fixed the issue of read and write errors after setting File Cache TTL.
  • Fixed the problem of service unavailability caused by querying the backends table or rowsets table.

v3.0.1-beta (September 18, 2023)

Improvements

v4.0v2.4
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