diff --git a/tiflash/tiflash-configuration.md b/tiflash/tiflash-configuration.md index a8be4fe6e2ae8..e6a53be4d3887 100644 --- a/tiflash/tiflash-configuration.md +++ b/tiflash/tiflash-configuration.md @@ -177,7 +177,9 @@ delta_index_cache_size = 0 ## of DeltaTree Storage Engine uses logical split. ## Using the logical split can reduce the write amplification. ## However, these are at the cost of disk space waste. - ## Modifying the default value is not recommended. + ## It is strongly recommended to keep the default value `false` and + ## not to change it to `true` in v6.2.0 and later versions. For details, + ## see known issue [#5576](https://github.com/pingcap/tiflash/issues/5576). # dt_enable_logical_split = false ## The memory usage limit for the generated intermediate data when a single @@ -197,9 +199,9 @@ delta_index_cache_size = 0 manual_compact_pool_size = 1 ## New in v5.4.0. This item enables or disables the elastic thread pool feature, which significantly improves CPU utilization in high concurrency scenarios of TiFlash. The default value is true. enable_elastic_threadpool = true - # Compression algorithm of the TiFlash storage engine. The value can be LZ4, zstd, or LZ4HC, and is case-insensitive. By default, LZ4 is used. + ## Compression algorithm of the TiFlash storage engine. The value can be LZ4, zstd, or LZ4HC, and is case-insensitive. By default, LZ4 is used. dt_compression_method = "LZ4" - # Compression level of the TiFlash storage engine. The default value is 1. It is recommended that you set this value to 1 if dt_compression_method is LZ4, -1 (smaller compression rate, but better read performance) or 1 if dt_compression_method is zstd, and 9 if dt_compression_method is LZ4HC. + ## Compression level of the TiFlash storage engine. The default value is 1. It is recommended that you set this value to 1 if dt_compression_method is LZ4, -1 (smaller compression rate, but better read performance) or 1 if dt_compression_method is zstd, and 9 if dt_compression_method is LZ4HC. dt_compression_level = 1 ## New in v6.2.0. Use the thread pool to handle read requests from the storage engine. The default value is false.