> ## Documentation Index
> Fetch the complete documentation index at: https://clickhouse.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# max_postpone_* MergeTree 表设置

> 按 max_postpone_* 分组的 ClickHouse MergeTree 表设置。

export const SettingsInfoBlock = ({type, default_value, changeable_without_restart}) => {
  return <div className="not-prose" style={{
    display: "flex",
    flexWrap: "wrap",
    alignItems: "baseline",
    columnGap: "0.5rem",
    rowGap: "0.125rem",
    margin: "0.375rem 0",
    fontSize: "0.8125rem",
    lineHeight: "1.125rem"
  }}>
      <div style={{
    fontWeight: 600,
    opacity: 0.72
  }}>类型</div>
      <div style={{
    overflowWrap: "anywhere"
  }}>{type}</div>
      <div style={{
    fontWeight: 600,
    opacity: 0.72,
    marginInlineStart: "0.5rem"
  }}>默认值</div>
      <div style={{
    overflowWrap: "anywhere"
  }}>{default_value}</div>
      {changeable_without_restart && <div style={{
    fontWeight: 600,
    opacity: 0.72,
    marginInlineStart: "0.5rem"
  }}>
          无需重启即可更改
        </div>}
      {changeable_without_restart && <div style={{
    overflowWrap: "anywhere"
  }}>
          {changeable_without_restart}
        </div>}
    </div>;
};

这些设置可在 [system.merge\_tree\_settings](/docs/zh/reference/system-tables/merge_tree_settings) 中找到，并由 ClickHouse 源代码自动生成。

<div id="max_postpone_time_for_failed_mutations_ms">
  ## max\_postpone\_time\_for\_failed\_mutations\_ms
</div>

<SettingsInfoBlock type="UInt64" default_value="300000" />

失败变更的最大延后时间。

<div id="max_postpone_time_for_failed_replicated_fetches_ms">
  ## max\_postpone\_time\_for\_failed\_replicated\_fetches\_ms
</div>

<SettingsInfoBlock type="UInt64" default_value="60000" />

<VersionHistory rows={[{"id": "row-1","items": [{"label": "25.4"},{"label": "60000"},{"label": "新增此设置，用于在复制队列中延迟拉取任务。"}]}]} />

失败的复制拉取操作的最大延后时间。

<div id="max_postpone_time_for_failed_replicated_merges_ms">
  ## max\_postpone\_time\_for\_failed\_replicated\_merges\_ms
</div>

<SettingsInfoBlock type="UInt64" default_value="60000" />

<VersionHistory rows={[{"id": "row-1","items": [{"label": "25.4"},{"label": "60000"},{"label": "新增此设置，用于启用在复制队列中延后合并任务。"}]}]} />

失败的复制合并任务的最大延后时间。

<div id="max_postpone_time_for_failed_replicated_tasks_ms">
  ## max\_postpone\_time\_for\_failed\_replicated\_tasks\_ms
</div>

<SettingsInfoBlock type="UInt64" default_value="300000" />

<VersionHistory rows={[{"id": "row-1","items": [{"label": "25.4"},{"label": "300000"},{"label": "新增设置，用于启用复制队列中任务的延后执行。"}]}]} />

失败的复制任务的最大延后时间。如果任务不是拉取、合并或变更任务，则使用该值。