agnes-xinyi-lu commented on code in PR #17428:
URL: https://github.com/apache/iceberg/pull/17428#discussion_r3684601705
##########
spark/v4.1/spark/src/main/java/org/apache/iceberg/spark/actions/RewriteManifestsSparkAction.java:
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@@ -314,10 +314,13 @@ private Column sortColumn() {
partitionFieldClustering);
// Map the top level partition column names to the column name
referenced within the manifest
- // entry dataframe
+ // entry dataframe. Backtick-quote the partition field name because it
may itself contain a
+ // literal '.' (e.g. when partitioning on a nested source column) - the
partition struct is
+ // always flat, so unquoted, col() would misparse that dot as a further
level of nesting
+ // instead of treating the whole name as one field.
Column[] partitionColumns =
partitionFieldClustering.stream()
- .map(p -> col(DATA_FILE_PARTITION_COLUMN_NAME + "." + p))
+ .map(p -> col(DATA_FILE_PARTITION_COLUMN_NAME + ".`" + p + "`"))
Review Comment:
updated, PTAL @uros-b thanks!
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