> ## 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.

# s3queue_* session settings

> ClickHouse session settings in the s3queue_* generated group.

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
  }}>Type</div>
      <div style={{
    overflowWrap: "anywhere"
  }}>{type}</div>
      <div style={{
    fontWeight: 600,
    opacity: 0.72,
    marginInlineStart: "0.5rem"
  }}>Default</div>
      <div style={{
    overflowWrap: "anywhere"
  }}>{default_value}</div>
      {changeable_without_restart && <div style={{
    fontWeight: 600,
    opacity: 0.72,
    marginInlineStart: "0.5rem"
  }}>
          Changeable without restart
        </div>}
      {changeable_without_restart && <div style={{
    overflowWrap: "anywhere"
  }}>
          {changeable_without_restart}
        </div>}
    </div>;
};

These settings are available in [system.settings](/docs/reference/system-tables/settings) and are autogenerated from [source](https://github.com/ClickHouse/ClickHouse/blob/master/src/Core/Settings.cpp).

<h2 id="s3queue_default_zookeeper_path">
  s3queue\_default\_zookeeper\_path
</h2>

<SettingsInfoBlock type="String" default_value="/clickhouse/s3queue/" />

Default zookeeper path prefix for S3Queue engine

<h2 id="s3queue_enable_logging_to_s3queue_log">
  s3queue\_enable\_logging\_to\_s3queue\_log
</h2>

<SettingsInfoBlock type="Bool" default_value="0" />

Enable writing to system.s3queue\_log. The value can be overwritten per table with table settings

<h2 id="s3queue_keeper_fault_injection_probability">
  s3queue\_keeper\_fault\_injection\_probability
</h2>

<SettingsInfoBlock type="Float" default_value="0" />

<VersionHistory rows={[{"id": "row-1","items": [{"label": "25.10"},{"label": "0"},{"label": "New setting."}]}]} />

Keeper fault injection probability for S3Queue.

<h2 id="s3queue_migrate_old_metadata_to_buckets">
  s3queue\_migrate\_old\_metadata\_to\_buckets
</h2>

<SettingsInfoBlock type="Bool" default_value="0" />

<VersionHistory rows={[{"id": "row-1","items": [{"label": "25.1"},{"label": "0"},{"label": "New setting."}]}]} />

Migrate old metadata structure of S3Queue table to a new one