dramaticlly commented on code in PR #18406:
URL: https://github.com/apache/iceberg/pull/18406#discussion_r4224067860
##########
docs/docs/spark-configuration.md:
##########
@@ -206,6 +206,7 @@ val spark = SparkSession.builder()
| spark.sql.iceberg.executor-cache.max-entry-size | 67108864 (64MB)
| Max size per cache entry (bytes)
|
| spark.sql.iceberg.executor-cache.max-total-size | 134217728 (128MB)
| Max total executor cache size
(bytes)
|
| spark.sql.iceberg.executor-cache.locality.enabled | false
| Enables locality-aware executor
cache usage
|
+| spark.sql.iceberg.snapshot-property._custom-key_ | null
| Adds an entry with custom-key and
corresponding value to the summary of snapshots committed by writes and by the
`rewrite_data_files`, `rewrite_position_delete_files`, and `rewrite_manifests`
procedures. Write options and properties set on an action take precedence |
Review Comment:
noticed there's later section which also populate the custom metadata to a
snapshot summary during a SQL execution, but list to per SQL writes. I think
this complements with spark rewrite actions, might consider move later to it
sits together? Some example on how explicit override session conf can also be
helpful IMO.
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