· · · · · · · · · 1195 7.6.7 When I use TiCDC to replicate messages to Kafka, Kafka returns the Message was too large error. Why? · · · · · · · · · · · · · · · · · · · · · · · · · · · · 1195 7.6.8 How higher?1206 7.7.12 When TiCDC replicates data to Kafka, can I control the maximum size of a single message in TiDB? · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 1206 7.7.13 If I modify · · · · · · · · · · · · · · · · · · · · 1206 7.7.14 When TiCDC replicates data to Kafka, does a message contain multiple types of data changes?· · · · · · · · · · · · · · · · · · · · · · · · · · · · ·

@param pageable a pageable parameter required by hibernate * @return player list package by page message */ @Query(value = "SELECT player_jpa FROM PlayerBean player_jpa") Page getPlayersByPage(Pageable static class NotEnoughException extends RuntimeException { public NotEnoughException(String message) { super(message); } } // Run SQL code in a way that automatically handles the // transaction retry logic static class NotEnoughException extends RuntimeException { public NotEnoughException(String message) { super(message); } } // Run SQL code in a way that automatically handles the // transaction retry logic

standalone databases cannot meet the data capacity requirements. The solution is to use sharding middleware or a distributed SQL database (like TiDB), and the latter is more cost-effective. TiDB adopts a mix default values and custom values. Otherwise, you might encounter the Duplicated Error error message. • You can use the tidb_allow_remove_auto_inc system variable to allow or forbid removing the AUTO_INCREMENT '=https' --tlsv1.2 -sSf https://tiup-mirrors.pingcap.com/ �→ install.sh | sh If the following message is displayed, you have installed TiUP successfully: Successfully set mirror to https://tiup-mirrors

xx, GC safe point is yy，该如何处理？ · · · · · · · · · · · 945 7.7.7 使用 TiCDC 同步消息到 Kafka 时 Kafka 报错 Message was too large，该如何处理？ · · · · · · · · · 945 7.7.8 TiCDC 同步时，在下游执行 DDL 语句失败会有什么表现，如何恢复？ · · · · · Claim-Check 支持仅发送 Kafka 消息的 value 部分到外部存储 #11396 @3AceShowHand 在 v8.4.0 之前，如果开启了 Claim-Check 功能（将 large-message-handle-option 设置为 claim-check）， TiCDC 在处理大型消息时会将 key 和 value 都进行编码并存储在外部存储系统中。 从 v8.4.0 开始，TiCDC `created_at` + INTERVAL 3 MONTH; 4.6.4.1.4 TTL 和生成列 TTL 可以和生成列一起使用，用来表达更加复杂的过期规则。例如： CREATE TABLE message ( id int PRIMARY KEY, created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP, image bool, expire_at TIMESTAMP

JDBC/ODBC, Applications ... MySQL Wire Protocol heartbeat meta TiDB is not a database middleware Sharding middleware TiDB ACID Transaction Support Mostly Elastic Scaling Complex Query (Join, Sub query, small and medium data size. ● Due to the problem of single writer, scale-out write still requires middleware or manually sharding ● Aurora is difficult to handle complex queries due to the reuse of MySQL

recommended that you avoid mix- ing default and custom values to prevent encountering the Duplicated Error message. • You can use the tidb_allow_remove_auto_inc system variable to allow or forbid removing the AUTO_INCREMENT '=https' --tlsv1.2 -sSf https://tiup-mirrors.pingcap.com/ �→ install.sh | sh If the following message is displayed, you have successfully installed TiUP: Successfully set mirror to https://tiup-mirrors '=https' --tlsv1.2 -sSf https://tiup-mirrors.pingcap.com/ �→ install.sh | sh If the following message is displayed, you have successfully installed TiUP: Successfully set mirror to https://tiup-mirrors

recommended that you avoid mix- ing default and custom values to prevent encountering the Duplicated Error message. • You can use the tidb_allow_remove_auto_inc system variable to allow or forbid removing the AUTO_INCREMENT '=https' --tlsv1.2 -sSf https://tiup-mirrors.pingcap.com/ �→ install.sh | sh If the following message is displayed, you have successfully installed TiUP: Successfully set mirror to https://tiup-mirrors '=https' --tlsv1.2 -sSf https://tiup-mirrors.pingcap.com/ �→ install.sh | sh If the following message is displayed, you have successfully installed TiUP: 101 Successfully set mirror to https://tiup-mirrors

prevent TTL Scan queries from impacting the TiKV block cache #43206 @lcwangchao • Improve an error message related to MAX_EXECUTION_TIME to make it compatible with MySQL #43031 @dveeden • Support using the issue that TiDB server cannot start due to an error in reading the cgroup information with the error message “can’t read file memory.stat from cgroup v1: open /sys/memory.stat no such file or directory” #42659 ported DDL operations on these columns #38988 #24321 @tiancaiamao • Fix the issue that the error message is incorrect in certain type conversion errors #41730 @hawkingrei • Fix the issue that after a

to the Region information output by the region command in pd-ctl #8412 @zeminzhou • Optimize the message that returns when you call the PD API to delete the TTL configuration #8450 @lhy1024 • Optimize query read requests to reduce the impact on other requests #8457 @nolouch • Optimize the error message that returns when you misconfigure PD microservices #52912 @rleungx • Add the --name startup parameter a new monitoring metric min safe ts #17307 @mittalrishabh • Reduce the memory usage of the peer message channel #16229 @Connor1996 • TiFlash • Support generating ad hoc heap profiling in SVG format #9320

logs #53645 @dveeden • TiCDC • Support directly outputting raw events when the downstream is a Message Queue (MQ) or cloud storage #11211 @CharlesCheung96 2.2.5 Bug fixes • TiDB • Fix the issue that incorrectly in the monitoring dashboard #17133 @King-Dylan • Fix the issue that setting the gRPC message compression method via grpc- �→ compression-type does not take effect on messages sent from TiKV recommended that you avoid mix- ing default and custom values to prevent encountering the Duplicated Error message. • You can use the tidb_allow_remove_auto_inc system variable to allow or forbid removing the AUTO_INCREMENT