Mon, Aug 3, 2020

TiDB Monthly Update for July 2020

Releases

We have four releases this month:

TiDB 4.0.4 Release Notes
- Bug fixes
TiDB 4.0.3 Release Notes
- New features
  - Display detailed version information for TiDB Dashboard #679
  - Implement file encryption in the TiFlash proxy
  - Support configuring kafka-client-id in MQ sink-uri #706
  - Support the specialized CSV separator and delimiter #116
- Bug fixes
TiDB 4.0.2 Release Notes
- New features
  - Support the MEMORY_QUOTA() hint in INSERT statements #18101
  - Support authentication based on the SAN field of TLS certificate #17698
  - Support the encryption-meta command in TiKV Control #8103
  - Enable TiFlash to run on the ARM architecture
  - Add a cli command to delete the TiCDC GC TTL #652
- Bug fixes
TiDB 3.0.16 Release Notes
- Improvements
  - Support the is null filter condition in hash partition pruning #17308
  - Split separate Regions for the newly added partition #17668
  - Avoid sending store heartbeats to PD after snapshots are received #8145
  - Improve the PD client log #8091
- Bug fixes

Blog posts

In Announcing Chaos Mesh® as a CNCF Sandbox Project, we are thrill to announce that Chaos Mesh® is now officially accepted as a CNCF Sandbox project.

We have published Heterogeneous Database Replication to TiDB based on Tianshuang Qin's talk at TiDB DevCon 2020. This article introduces TiDB's best practices of migrating heterogeneous databases between different database platforms and application scenarios.

Horizontally Scaling the Hive Metastore Database by Migrating from MySQL to TiDB, written by Mengyu Hu, the Platform Engineer at Zhihu, introduces how Zhihu uses TiDB to horizontally scale Hive Metastore to meet their growing business needs.

Shawn Ma's article How TiDB's HTAP Makes Truly Hybrid Workloads Possible looks at the design details of TiDB's HTAP architecture, including the real-time updatable columnar engine, the multi-Raft replication strategy, and smart selection.

Heng Long and Shuang Chen has written Cluster Diagnostics: Troubleshoot Cluster Issues Using Only SQL Queries to elaborate on cluster diagnostics's diagnostic reports, and show you examples of how cluster diagnostics can help you quickly find system problems.