② wait_for_async_insert = 0 ③ async_insert_busy_timeout_ms = 5000(基准测试 1) async_insert_busy_timeout_ms = 30_000(基准测试 2) ④ async_insert_max_data_size = 100_000_000 ⑤ async_insert_max_query_number = 450_000 ① 启用异步插入。通过 ②,我们启用了上述异步插入的发射并忘记...
缓存中数据大小超过 async_insert_max_data_size ,单位字节,默认值100000 距离本批次数据插入的第一个插入语句时间 async_insert_busy_timeout_ms,单位毫秒,默认值 200 本批次数据插入最大的插入次数 async_insert_max_query_number,单位 次,默认值:450,该参数只有在async_insert_deduplicate=1的情况下才会生效 总...
③ async_insert_busy_timeout_ms = 5000(基准测试 1) async_insert_busy_timeout_ms = 30_000(基准测试 2) ④ async_insert_max_data_size = 100_000_000 ⑤ async_insert_max_query_number = 450_000 ① 启用异步插入。通过 ②,我们启用了上述异步插入的发射并忘记返回行为。缓冲区应在基准测试 1 ...
1. 首先async_insert=1表示开启异步插入的功能,也即是客户端insert的数据会被ck缓存,直到满足一下条件之一才会写入ck的part分区中, async_insert_max_data_size 缓存大小大于这个配置值 async_insert_busy_timeout_ms超时时间到 async_insert_max_query_number每个数据块已经达到配置的insert次数 其次,我们看一下wait...
insert_quorum_parallel select_sequential_consistency insert_deduplicate asynchronous insert async_insert async_insert_threads wait_for_async_insert wait_for_async_insert_timeout async_insert_max_data_size async_insert_max_query_number async_insert_busy_timeout_max_ms async_insert_poll...
CREATE USER cdcClickhouseAsync IDENTIFIED WITH plaintext_password SETTINGS async_insert = true, async_insert_busy_timeout_min_ms = 500, async_insert_busy_timeout_ms = 30000, wait_for_async_insert = false, async_insert_max_query_number = 450000, async_insert_max_data_size = 100000000; ...
注意 Fluent Bit 的偏移管理及推进基于输出的确认。对于wait_for_async_insert设置为 0 的情况,意味着数据在完全处理之前就得到了确认,即后续可能出现失败导致数据丢失。在某些情况下,这可能是可以接受的。注意还有设置async_insert_max_data_size和async_insert_busy_timeout_ms,它们控制缓冲区的确切刷新行为。
Also the buffer will be flushed to disk if at least async_insert_max_query_number async insert queries per block were received. This last setting takes effect only if async_insert_deduplicate is enabled. If wait_for_async_insert is enabled, every client will wait for the data to be ...
--max_insert_threads arg The maximum number of threads to execute the INSERT SELECT query. Values 0 or 1 means that INSERT SELECT is not run in parallel. Higher values will lead to higher memory usage. Parallel INSERT SELECT has effect only if the SELECT part is run on parallel, see '...
log_queries_min_type QUERY_START log_queries_min_query_duration_ms 0 log_queries_cut_to_length 100000 log_queries_probability 1 distributed_product_mode deny max_concurrent_queries_for_all_users 0 max_concurrent_queries_for_user 0 insert_deduplicate 1 ...