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DOCS: Explicitly specify operation as a required field of Snapshot's summary field #11355

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DOCS: Explicitly specify operation as a required field of Snapshot's summary field #11355

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2 changes: 1 addition & 1 deletion format/spec.md
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Expand Up @@ -557,7 +557,7 @@ A snapshot consists of the following fields:
| _required_ | _required_ | **`timestamp-ms`** | A timestamp when the snapshot was created, used for garbage collection and table inspection |
| _optional_ | _required_ | **`manifest-list`** | The location of a manifest list for this snapshot that tracks manifest files with additional metadata |
| _optional_ | | **`manifests`** | A list of manifest file locations. Must be omitted if `manifest-list` is present |
| _optional_ | _required_ | **`summary`** | A string map that summarizes the snapshot changes, including `operation` (see below) |
| _optional_ | _required_ | **`summary`** | A string map that summarizes the snapshot changes, including `operation` as a _required_ field (see below) |
| _optional_ | _optional_ | **`schema-id`** | ID of the table's current schema when the snapshot was created |

The snapshot summary's `operation` field is used by some operations, like snapshot expiration, to skip processing certain snapshots. Possible `operation` values are:
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