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release-7.5.0 release notes: add two TiCDC parameter changes (#16585) #16589

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Feb 29, 2024
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release-7.5.0 release notes: add two TiCDC parameter changes (#16585) #16589

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qiancai Feb 23, 2024
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qiancai Feb 23, 2024
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Update release-7.6.0.md
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2 changes: 2 additions & 0 deletions releases/release-7.5.0.md
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Expand Up @@ -180,6 +180,8 @@ Compared with the previous LTS 7.1.0, 7.5.0 includes new features, improvements,
| BR | [`--ignore-stats`](/br/br-snapshot-manual.md#back-up-statistics) | Newly added | Controls whether to back up and restore database statistics. When you set this parameter to `false`, the br command-line tool supports backing up and restoring statistics of columns, indexes, and tables. |
| TiCDC | [`case-sensitive`](/ticdc/ticdc-changefeed-config.md) | Modified | Changes the default value from `true` to `false` after further tests, which means that the table names and database names in the TiCDC configuration file are case-insensitive by default. |
| TiCDC | [`sink.dispatchers.partition`](/ticdc/ticdc-changefeed-config.md) | Modified | Controls how TiCDC dispatches incremental data to Kafka partitions. v7.5.0 introduces a new value option `columns`, which uses the explicitly specified column values to calculate the partition number. |
| TiCDC | [`encoding-worker-num`](/ticdc/ticdc-changefeed-config.md) | Newly added | Controls the number of encoding and decoding workers in the redo module. |
| TiCDC | [`flush-worker-num`](/ticdc/ticdc-changefeed-config.md) | Newly added | Controls the number of flushing workers in the redo module. |
| TiCDC | [`sink.column-selectors`](/ticdc/ticdc-changefeed-config.md) | Newly added | Controls the specified columns of data change events that TiCDC sends to Kafka when dispatching incremental data. |
| TiCDC | [`sql-mode`](/ticdc/ticdc-changefeed-config.md) | Newly added | Specifies the SQL mode used by TiCDC when parsing DDL statements. The default value is the same as the default SQL mode of TiDB. |
| TiDB Lightning | `--importer` | Deleted | Specifies the address of TiKV-importer, which is deprecated in v7.5.0. |
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2 changes: 0 additions & 2 deletions releases/release-7.6.0.md
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Expand Up @@ -293,8 +293,6 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.6/quick-start-with-
| TiDB Lightning | [`block-size`](/tidb-lightning/tidb-lightning-configuration.md#tidb-lightning-task) | Newly added | Controls the I/O block size for sorting local files in Physical Import Mode (`backend='local'`). The default value is `16KiB`. When the disk IOPS is a bottleneck, you can increase this value to improve performance. |
| BR | [`--granularity`](/br/br-snapshot-guide.md#performance-and-impact-of-snapshot-restore) | Newly added | Uses the coarse-grained Region scatter algorithm (experimental) by specifying `--granularity="coarse-grained"`. This accelerates restore speed in large-scale Region scenarios. |
| TiCDC | [`compression`](/ticdc/ticdc-changefeed-config.md) | Newly added | Controls the behavior to compress redo log files. |
| TiCDC | [`encoding-worker-num`](/ticdc/ticdc-changefeed-config.md) | Newly added | Controls the number of encoding and decoding workers in the redo module. The default value is `16`. |
| TiCDC | [`flush-worker-num`](/ticdc/ticdc-changefeed-config.md) | Newly added | Controls the number of flushing workers in the redo module. The default value is `8`. |
| TiCDC | [`sink.cloud-storage-config`](/ticdc/ticdc-changefeed-config.md) | Newly added | Sets the automatic cleanup of historical data when replicating data to object storage. |

### System tables
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