rdblue commented on a change in pull request #3820:
URL: https://github.com/apache/iceberg/pull/3820#discussion_r777622685
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File path: site/docs/spark-ddl.md
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@@ -360,3 +360,29 @@ ALTER TABLE prod.db.sample WRITE ORDERED BY category ASC
NULLS LAST, id DESC NUL
!!! Note
Table write order does not guarantee data order for queries. It only
affects how data is written to the table.
+Only local sorting can be set at the same time, use `LOCALLY ORDERED BY`
Review comment:
This should first state that `WRITE ORDERED BY` sets a global ordering
where rows are ordered across tasks, like using `ORDER BY` in an `INSERT`
command. Then introduce `LOCALLY ORDERED BY` to order within each task but not
across tasks.
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