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分布式版-V3.2.3企业版LTS

V3.2.3 文档更新记录
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  - 系统配置项
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      - all_cluster_list
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      - force_refresh_location_cache_interval
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      - freeze_trigger_percentage
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      - get_leader_candidate_rpc_timeout
      - global_index_build_single_replica_timeout
      - global_major_freeze_residual_memory
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      - high_priority_net_thread_count
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      - ilog_index_expire_time
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      - location_fetch_concurrency
      - location_refresh_thread_count
      - log_archive_batch_buffer_limit
      - log_archive_checkpoint_interval
      - log_archive_concurrency
      - log_restore_concurrency
      - major_compact_trigger
      - major_freeze_duty_time
      - max_kept_major_version_number
      - max_px_worker_count
      - max_string_print_length
      - max_syslog_file_count
      - memory_chunk_cache_size
      - memory_limit
      - memory_limit_percentage
      - memory_reserved
      - memstore_limit_percentage
      - merge_stat_sampling_ratio
      - merge_thread_count
      - merger_check_interval
      - merger_completion_percentage
      - merger_switch_leader_duration_time
      - merger_warm_up_duration_time
      - micro_block_merge_verify_level
      - migrate_concurrency
      - migration_disable_time
      - min_observer_version
      - minor_compact_trigger
      - minor_deferred_gc_time
      - minor_freeze_times
      - minor_merge_concurrency
      - minor_warm_up_duration_time
      - multiblock_read_gap_size
      - multiblock_read_size
      - mysql_port
      - net_thread_count
      - ob_event_history_recycle_interval
      - ob_ratelimit_stat_period
      - obconfig_url
      - ofs_list
      - partition_table_check_interval
      - partition_table_scan_batch_count
      - plan_cache_evict_interval
      - plan_cache_high_watermark
      - plan_cache_low_watermark
      - px_task_size
      - px_workers_per_cpu_quota
      - rebuild_replica_data_lag_threshold
      - recyclebin_object_expire_time
      - replica_safe_remove_time
      - resource_hard_limit
      - resource_soft_limit
      - restore_concurrency
      - role_change_timeout
      - rootservice_async_task_queue_size
      - rootservice_async_task_thread_count
      - rootservice_list
      - rootservice_memory_limit
      - rootservice_ready_check_interval
      - row_compaction_update_limit
      - row_purge_thread_count
      - rpc_port
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      - schema_history_expire_time
      - schema_history_recycle_interval
      - server_balance_cpu_mem_tolerance_percent
      - server_balance_critical_disk_waterlevel
      - server_balance_disk_tolerance_percent
      - server_check_interval
      - server_cpu_quota_max
      - server_cpu_quota_min
      - server_data_copy_in_concurrency
      - server_data_copy_out_concurrency
      - server_permanent_offline_time
      - server_temporary_offline_time
      - sql_audit_memory_limit
      - sql_audit_queue_size
      - ssl_client_authentication
      - ssl_external_kms_info
      - stack_size
      - switchover_process_thread_count
      - sys_bkgd_io_high_percentage
      - sys_bkgd_io_low_percentage
      - sys_bkgd_migration_change_member_list_timeout
      - sys_bkgd_migration_retry_num
      - sys_bkgd_net_percentage
      - sys_cpu_limit_trigger
      - syslog_io_bandwidth_limit
      - syslog_level
      - system_cpu_quota
      - system_memory
      - system_trace_level
      - tableapi_transport_compress_func
      - tablet_size
      - tcp_keepcnt
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      - tenant_cpu_variation_per_server
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      - trx_2pc_retry_interval
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      - unit_balance_resource_weight
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      - user_row_cache_priority
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      - virtual_table_location_cache_expire_time
      - wait_leader_batch_count
      - weak_read_version_refresh_interval
      - workers_per_cpu_quota
      - zone
      - zone_merge_concurrency
      - zone_merge_order
      - zone_merge_timeout
      - ob_esi_rpc_port
      - enable_ob_esi_process
      - ob_esi_session_timeout
      - ob_esi_io_concurrency
      - ob_esi_memory_limit
      - ob_esi_syslog_level
      - ob_esi_max_syslog_file_count
      - max_trx_2pc_retry_interval
    - 租户级配置项
  - 系统变量（MySQL 模式）
  - 系统变量（Oracle 模式）
  - 系统视图（MySQL 模式）
  - 系统视图（Oracle 模式）
  - 常见统计事件说明
  - 常见等待事件说明
  - 错误码（MySQL 模式）
  - 错误码（Oracle 模式）
  - 预留关键字（MySQL 模式）
  - 预留关键字（Oracle 模式）
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术语

merge_thread_count

更新时间：2024-07-25 11:45:52

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merge_thread_count 用于设置每日合并工作的线程数。

属性	描述
参数类型	整型
默认值	0
取值范围	[0, 256]
是否重启 OBServer 生效	否

使用说明

该配置项的值为 0 时，合并的工作进程数的计算方式为 min{10,cpu_cnt}，其中 cpu_cnt 为系统 CPU 的数量。

配置示例

设置每日合并工作的线程数为 100。

obclient> ALTER SYSTEM SET merge_thread_count=100;

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