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Release 3.23.08.0

02 Nov 08:20
@yanhuqing666 yanhuqing666
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Release Notes:

We have released a new version 3.23.08.0.

Features:

  • [#3831] Support OLAP/OLTP mixed load. More Detail, see doc.
  • [#3832] New ManagerFrontWorker thread pool for management side. More Detail, see doc.
  • [#3833] Supports monitoring of some timing threads and interrupt operations of some threads. More Detail, see doc.
  • [#3834] Optimize and unify dble related internal statistics. More Detail, see doc.
  • [#3838] Strengthen the handling of captured thread ‘error’ exceptions.

Bug-fixes:

  • [#3835] When dble starts, some asynchronous initialization tasks take a long time
  • [#3836] When the lower_case_table_name of the backend is inconsistent, some operations of dble do not meet expectations.
  • Fix some DDL issues
  • Fix clickhouse synchronization variable error when reloading
  • Supports specifyCharset attribute configuration for ChildTable

Breaking backward compatibility:

  • [#3834] Optimize and unify dble related internal statistics. More Detail, see doc.

特性：

  • [#3831] 支持 OLAP/OLTP 混合负载. 更多详细信息，请参阅 doc.
  • [#3832] ManagerFrontWorker 独立管理端线程池. 更多详细信息，请参阅 doc.
  • [#3833] 支持监控部分定时线程以及部分线程的中断操作. 更多详细信息，请参阅 doc.
  • [#3834] 优化并统一dble相关内部统计信息. 更多详细信息，请参阅 doc.
  • [#3838] 加强对捕获的线程“错误”异常的处理.

缺陷修复:

  • [#3835] dble启动时，某些异步初始化任务需要很长时间
  • [#3836] 后端的lower_case_table_name不一致时，dble部分操作不符合预期
  • 修复一些 DDL 问题
  • 修复重新加载时clickhouse同步变量错误
  • ChildTable支持specifyCharset属性配置

和旧版本的不兼容项：

  • [#3834] 优化并统一dble相关内部统计信息. 更多详细信息，请参阅 doc.
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Release 3.21.10.15

02 Nov 08:18
@yanhuqing666 yanhuqing666
3.21.10.15/tag
5533307
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Release 3.21.10.15

Release Notes:

We have released a bug-fixed version 3.21.10.15.

Bug-fixes:

  • When the max function processes datetime/timestamp/time columns, the precision is discarded
  • Modifying the white_ips column in dble_rw_split_entry to null does not take effect.
  • Strengthen sequence configuration change scenario optimization
  • Some npe processing

发行说明：

我们发布了3.21.10.15,这是个bug修复版本

问题修复:

  • max函数处理datetime/timestamp/time列时，精度丢弃了
  • 修改dble_rw_split_entry中white_ips列为null，不生效
  • 加强sequence配置改动场景优化
  • 一些NPE的处理
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Release 3.22.11.1

02 Nov 08:19
@yanhuqing666 yanhuqing666
3.22.11.1/tag
fae0c15
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Release 3.22.11.1

Release Notes:

We have released a bug-fixed version 3.22.11.1.

Bug-fixes:

  • Improve the logic of getting connections from connection pool
  • In some scenarios, when executing a large package statement, hang, Lost connection...
  • Support update/delete shardingTable with join globalTable
  • Handle the semi-connection scenario when the backend connection is initialized
  • After the master-slave switch, the 8066 side starts a transaction and rolls it back, some data may not be rolled back.
  • The expansion and contraction thread connection-pool-evictor-thread of the connection pool exits unexpectedly
  • Too many slow logs blocked, resulting in heartbeat failure and connection creation failure

发行说明：

我们发布了3.22.11.1,这是个bug修复版本

问题修复:

  • 改善从连接池中获取连接的逻辑
  • 某些场景下执行大包语句出现hang、Lost connection...
  • 支持update/delete多表针对分片表join全局表
  • 后端连接初始化时出现半连接场景的处理
  • 主从切换后，业务端开启事务并进行回滚时，可能存在部分数据没有被回滚的现象
  • 连接池的扩缩容线程connection-pool-evictor-thread意外退出
  • 慢日志过多阻塞，导致心跳失败、创建连接失败
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Release 3.22.01.6

02 Nov 08:19
@yanhuqing666 yanhuqing666
3.22.01.6/tag
4ae6dcf
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Release 3.22.01.6

Release Notes:

We have released a bug-fixed version 3.22.01.6.

Bug-fixes:

  • After the master-slave switch, the 8066 side starts a transaction and rolls it back, some data may not be rolled back.
  • Enable sql statistics, concurrent threads do not grab the lock and fall into an infinite loop, causing the cpu usage to be too high
  • The expansion and contraction thread connection-pool-evictor-thread of the connection pool exits unexpectedly
  • Too many slow logs blocked, resulting in heartbeat failure and connection creation failure
  • Slow log bug causes queue consumption thread to exit abnormally
  • Strengthen sequence configuration change scenario optimization
  • Lost connection appears when issuing multiple statements...

发行说明：

我们发布了3.22.01.6,这是个bug修复版本

问题修复:

  • 主从切换后，业务端开启事务并进行回滚时，可能存在部分数据没有被回滚的现象
  • 开启sql统计，并发线程没有抢到锁陷入死循环引起cpu使用率过高
  • 连接池的扩缩容线程connection-pool-evictor-thread意外退出
  • 慢日志过多阻塞，导致心跳失败、创建连接失败
  • 慢日志bug导致队列消费线程异常退出
  • 多语句下发出现lost connnection...
  • 加强sequence配置改动场景优化
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Release 3.23.04.0

20 Jun 03:38
@yanhuqing666 yanhuqing666
3.23.04.0/tag
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Release 3.23.04.0

Release Notes:

We have released a new version 3.23.04.0.

Features:

  • [#3738] Support update/delete shardingTable with join globalTable. More Detail, see doc1, doc2
  • [#3743] Adjusted the -DfakeMysqlVersion setting rule in RW-split mode. More Detail, see doc
  • [#3742] Adjust the default value of minimum stack size (-Xss).
  • [#3739] Support for adjusting tcp related parameters（alpha version）. More Detail, see doc.
  • [#3727] Optimize the global sequence loading logic.
  • [#3745] Enhance/optimize the internal logic code that supports SSL, and handle scenarios that may cause memory leaks.

Bug-fixes:

  • [#3741] In RW-split mode, when the auto_increment_increment of the mysql is not equal to 1, insert wrong data using jdbc connection dble
  • [#3744] In RW-split mode, executing large package sql should not be limited by the maxPacketSize set by dble
  • [#3746] The scaling thread(connection-pool-evictor-thread) exited unexpectedly
  • [#3747] After the master-slave switch, the 8066 side opens the transaction for rollback and some data is not rolled back
  • Support column aliases can be set when querying tables on the management side(9066)
  • Adjust some log printing
  • Fix some NPE issues

Breaking backward compatibility:

  • [#3743] Adjusted the -DfakeMysqlVersion setting rule in rwsplit mode. More Detail, see doc

发行说明：

我们发布了新版本 3.23.04.0。

特性：

  • [#3738] 针对分片表join全局表，支持update/delete多表. 更多详细信息，请参见 doc1, doc2
  • [#3743] 对读写分离模式的-DfakeMysqlVersion设置规则进行了调整. 更多详细信息，请参见 doc
  • [#3742] 调整最小栈值(-Xss)的默认值.
  • [#3739] 支持调整tcp相关参数（实验功能）. 更多详细信息，请参见 doc
  • [#3727] 优化全局序列加载内部逻辑
  • [#3745] 加强/优化支持SSL的内部逻辑代码，以及可能发成内存泄漏的场景处理

缺陷修复:

  • [#3741] 读写分离中，当数据库的自增步长不等于1时，使用jdbc连接dble插入错误数据
  • [#3744] 读写分离中，执行大包语句不受dble设置的maxPacketSize的限制
  • [#3746] 扩缩容connection-pool-evictor-thread线程偶现退出
  • [#3747] 主从切换后，业务端开启事务进行rollback时，部分数据没有被回滚
  • 支持在管理端查询表时可以设置列别名
  • 调整一些日志打印
  • 解决一些NPE问题

和旧版本的不兼容项：

  • [#3743] 对读写分离模式的-DfakeMysqlVersion设置规则进行了调整。更多详细信息，请参见 doc
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Release 3.21.10.14

20 Jun 03:36
@yanhuqing666 yanhuqing666
3.21.10.14/tag
be1adf2
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Release 3.21.10.14

Release Notes:

We have released a bug-fixed version 3.21.10.14.

Bug-fixes:

  • Enable sql statistics, concurrent threads do not grab the lock and fall into an infinite loop, causing the cpu usage to be too high
  • The expansion and contraction thread connection-pool-evictor-thread of the connection pool exits unexpectedly
  • Improve the logic of fetching connections in the connection pool
  • Handle the semi-connection scenario when the backend connection is initialized
  • In some scenarios, when executing a large package statement, hang, Lost connection...
  • Support update/delete shardingTable with join globalTable
  • After the master-slave switch, the 8066 side opens the transaction for rollback and some data is not rolled back
  • Too many slow logs blocked, resulting in heartbeat failure and connection creation failure

发行说明：

我们发布了3.21.10.14,这是个基于3.21.10.12的bug修复版本

问题修复:

  • 开启sql统计，并发线程没有抢到锁陷入死循环引起cpu使用率过高
  • 连接池的扩缩容线程connection-pool-evictor-thread意外退出
  • 改善连接池中取连接的逻辑
  • 后端连接初始化时出现半连接场景的处理
  • 某些场景下执行大包语句出现hang、Lost connection...
  • 支持update/delete多表针对分片表join全局表
  • 主从切换后，业务端开启事务进行rollback时，部分数据没有被回滚
  • 慢日志过多阻塞，导致心跳失败、创建连接失败
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Release 3.22.01.5

20 Jun 03:37
@yanhuqing666 yanhuqing666
3.22.01.5/tag
728b193
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Release 3.22.01.5

Release Notes:

We have released a bug-fixed version 3.22.01.5.

Bug-fixes:

  • Improve the logic of getting connections from connection pool
  • Handle the semi-connection scenario when the backend connection is initialized
  • In some scenarios, when executing a large package statement, hang, Lost connection...
  • Support update/delete shardingTable with join globalTable
  • After the master-slave switch, the 8066 side opens the transaction for rollback and some data is not rolled back
  • When executing load data, Lost connection... and other errors occur
  • Fix some NPE issues

发行说明：

我们发布了3.22.01.5,这是个基于3.22.01.4的bug修复版本

问题修复:

  • 改善从连接池中获取连接的逻辑
  • 后端连接初始化时出现半连接场景的处理
  • 某些场景下执行大包语句出现hang、Lost connection...
  • 支持update/delete多表针对分片表join全局表
  • 主从切换后，业务端开启事务进行rollback时，部分数据没有被回滚
  • 执行load data出现Lost connection...和其他报错
  • 解决一些NPE问题
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Release 3.22.07.3

20 Jun 03:37
@yanhuqing666 yanhuqing666
3.22.07.3/tag
124ef04
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Release 3.22.07.3

Release Notes:

We have released a bug-fixed version 3.22.07.3.

Bug-fixes:

  • In some scenarios, when executing a large package statement, hang, Lost connection...
  • Two tables are queried through a non-shard key association, resulting in a memory leak
  • Load data local execution error
  • When the main instance network fails, the execution of complex queries causes the Business thread to hang
  • Some heartbeat issues

发行说明：

我们发布了3.22.07.3,这是个基于3.22.07.01的bug修复版本

问题修复:

  • 某些场景下执行大包语句出现hang、Lost connection...
  • 两张表通过非分片键关联查询，出现内存泄露
  • Load data local执行报错
  • 主实例网络故障时，执行复杂查询导致Business线程hang住
  • 一些心跳问题
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Release 3.22.11.0

12 Jan 06:30
@yanhuqing666 yanhuqing666
3.22.11.0/tag
b0e0c41
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Release 3.22.11.0

Release Notes:

We have released a new version 3.22.11.0.
Firstly, we must thanks to the following people for their contributions to our community：@xhailiang, @huashusu, @13611582598, @2779382063, @zeroxxmmbm, @24pawa.

Features:

  • [#3529] Add monitor for off-heap memory leak. More Detail, see doc.

  • [#3549] Support delay detection under master-slave structure. More Detail, see doc.

  • [#3431] Support sql_dump log. More Detail,see doc.

  • [#3429] Support local read for Read-write separation when using sharding-table. More Detail, see doc.Thanks to @2779382063 for reporting the issue.

  • [#3586] Support some scenes of multi-table update. More Detail, see doc

  • [#3587] Pseudo support for dropping dble database. More Detail, see doc

  • [#3585] Support native json decode function. More Detail, see doc

Bug-fixes:

  • [#3420] When set useCursorFetch=true in mysql-connector-java-8.0.27 , dble may report ArrayIndexOutOfBoundsException, thanks to @xhailiang for reporting the bug.
  • [#3450] Some parameters of the JDK like The java.specification.maintenance.version is not supported, thanks to @huashusu for reporting the bug.
  • [#3444] MultiNodeSelectHandler may cause dble to hang , thanks to @13611582598 for reporting the bug.
  • [#3495] CPU usage up to 100% and report lots of exceptions, thanks to @zeroxxmmbm for reporting the bug.
  • [#3427] When load data local infile into dble, the used memory will not be recycled, thanks to @24pawa for reporting the bug.
  • Optimize some log problems.
  • Optimize some performance problems

Breaking backward compatibility:

  • [#3546] Change the default unit of parameter delayThreshold, from second to millssecond. More Detail,seedoc

发行说明：

我们发布了新版本 3.22.11.0。
首先，我们必须感谢以下人士对我们社区的贡献：@xhailiang, @huashusu, @13611582598, @2779382063, @zeroxxmmbm, @24pawa .

特性：

  • [#3529] 添加堆外内存泄漏监视器. 更多详细信息，请参见doc.

  • [#3549] 支持主从结构下的延时检测. 更多详细信息，请参见doc.

  • [#3431] 支持审计日志. 更多详细信息，请参见doc.

  • [#3429] 支持分库分表时候的读写分离本地读功能. 更多详细信息，请参见doc.感谢 @2779382063 贡献此需求.

  • [#3586] 支持部分场景的多表update. 更多详细信息，请参见doc

  • [#3587] 伪支持删除 dble 数据库. 更多详细信息，请参见doc

  • [#3585] 支持本地json函数的计算.更多详细信息，请参见doc

缺陷修复:

  • [#3420] 当我们在 mysql-connector-java-8.0.27里设置了useCursorFetch=true, dble 可能会报错ArrayIndexOutOfBoundsException, 感谢 @xhailiang 报告此bug.
  • [#3450] 不支持 JDK 的一些参数，例如 The java.specification.maintenance.version, 感谢 @huashusu 报告此bug.
  • [#3444] MultiNodeSelectHandler 可能导致dble 卡死 , 感谢 @13611582598 报告此bug.
  • [#3495] CPU使用率高达100% 并且报出大量异常, 感谢 @zeroxxmmbm 报告此bug.
  • [#3427] 当使用load data local infile导入dble, 使用过的内存不会被回收, 感谢 @24pawa 报告此bug.
  • 优化一些日志问题。
  • 优化一些性能问题。

和旧版本的不兼容项：

  • [#3546] 将参数“delayThreshold”的默认单位从秒更改为毫秒。更多详细信息，请参见doc

Contributors

huashusu, zeroxxmmbm, and 4 other contributors
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Release 3.21.10.12

12 Jan 06:29
@yanhuqing666 yanhuqing666
3.21.10.12/tag
46b7283
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Release 3.21.10.12

Release Notes:

We have released a bug-fixed version 3.21.10.12.

Bug-fixes:

  • Some parameters of the JDK like The java.specification.maintenance.version is not supported.
  • MultiNodeSelectHandler may cause dble to hang.
  • CPU usage up to 300%
  • Some problems about maxPacketSize
  • When load data local infile into dble, the used memory will not be recycled
  • Optimize some problems about complex query.
  • Optimize some heartbeat problems
  • Memory leak caused by some complex queries

发行说明：

我们发布了3.21.10.12,这是个基于3.21.10.10的bug修复版本

问题修复:

  • 不支持 JDK 的一些参数，例如 The java.specification.maintenance.version
  • MultiNodeSelectHandler 可能导致dble 卡死
  • CPU使用率高达300%问题
  • maxPacketSize相关问题。
  • 当使用load data local infile导入dble, 使用过的内存不会被回收
  • 复杂查询的一些问题
  • 心跳的优化
  • 某些复杂查询可能引起的内存泄漏
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