index
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string | string[] - A comma-separated list of index names; use _all or empty string to perform the operation on all indices
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master_timeout or masterTimeout
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string - Specify timeout for connection to master
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timeout
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string - Explicit operation timeout
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preserve_existing or preserveExisting
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boolean - Whether to update existing settings. If set to true existing settings on an index remain unchanged, the default is false
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ignore_unavailable or ignoreUnavailable
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boolean - Whether specified concrete indices should be ignored when unavailable (missing or closed)
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allow_no_indices or allowNoIndices
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boolean - Whether to ignore if a wildcard indices expression resolves into no concrete indices. (This includes _all string or when no indices have been specified)
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expand_wildcards or expandWildcards
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'open' | 'closed' | 'none' | 'all' - Whether to expand wildcard expression to concrete indices that are open, closed or both.
Default: open
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flat_settings or flatSettings
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boolean - Return settings in flat format (default: false)
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body
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object - The index settings to be updated
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