huaxingao commented on a change in pull request #34497:
URL: https://github.com/apache/spark/pull/34497#discussion_r746085840
##########
File path:
sql/catalyst/src/main/java/org/apache/spark/sql/connector/catalog/TableCatalog.java
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@@ -71,6 +71,16 @@
*/
String OPTION_PREFIX = "option.";
+ /**
+ * A reserved property to specify the version of the table.
+ */
+ String PROP_VERSION = "versionAsOf";
Review comment:
The reason I used `versionAsOf` and `timestampAsOf` is because Delta
Lake uses these.
Delta Lake doc has
```
df1 = spark.read.format('delta').option('timestampAsOf',
'2019-01-01').load('/mnt/delta/people-10m')
df2 = spark.read.format('delta').option('versionAsOf',
2).load('/mnt/delta/people-10m')
```
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