Collapsar

* **dble version：any version,use develop version as example ** * **preconditions ：** * **configs：** **sharding.xml** ``` 2 0:2 ``` * **steps：** step1: drop table if exists schema1. sharding_4_t1; create table...

Improvement: - The algorithm of stringhash is not clearly described, users hope to improve it. - In chapter about sysbench, some sysbench paramaters are outdated. users hope to update to...

Reason:   Improve #inner 1489. Type:   BUG/Improve Influences：   inner 1489: readonly transaction can push to slave

Reason:   BUG #3420. Type:   BUG Influences：   dble parse date parameter error in com_execute packet

[Bug]: The extractvalue function in ob for mysql is not compatible with the native MySQL function

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**Describe the bug** extractvalue in ob for mysql mode can't support xpath array index **Environment** - OS Version and CPU Arch(`uname -a`): - OB Version(`LD_LIBRARY_PATH=../lib:$LD_LIBRARY_PATH ./observer -V`): release v4.2.2.0, and...

[Feature]: support GIS fuction ST_PointN and ST_NumPoints(ls)

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**Use Case** we want to use GIS function ST_PointN, but it is not supported.  **Describe the solution you'd like** ST_PointN and ST_NumPoints(ls) are supported **Describe alternatives you've considered** **Additional...

[Bug]: oceanbase crash when rootservice executes balance

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**Describe the bug** 此 observer 是 metadb数据库节点，ocp元数据库为单节点部署。 通过 coredump 发现是 RootBalaner 线程发生 crash **Environment** observer version: OceanBase_CE 4.2.1.4, revision: 104000052024022918-3246b00b20dbd0cf1e1bef4b67fd31ff8fe7088f sysname: Linux, os release: 4.19.90-52.22.v2207.ky10.x86_64, machine: x86_64, tz GMT offset:...