kbendick commented on a change in pull request #2984:
URL: https://github.com/apache/iceberg/pull/2984#discussion_r689881711
##########
File path:
mr/src/main/java/org/apache/iceberg/mr/mapreduce/IcebergInputFormat.java
##########
@@ -141,7 +144,7 @@
// TODO: We do not support residual evaluation for HIVE and PIG in
memory data model yet
checkResiduals(task);
}
- splits.add(new IcebergSplit(conf, task, table.io(),
table.encryption()));
+ splits.add(new IcebergSplit(SerializableTable.copyOf(table), conf,
task));
Review comment:
Nit: It looks like this call to `SerializableTable.copyOf(table)` is
happening in a loop. Can we pull it out?
##########
File path: core/src/main/java/org/apache/iceberg/MetadataColumns.java
##########
@@ -38,6 +38,11 @@ private MetadataColumns() {
Integer.MAX_VALUE - 2, "_pos", Types.LongType.get(), "Ordinal position
of a row in the source data file");
public static final NestedField IS_DELETED = NestedField.required(
Integer.MAX_VALUE - 3, "_deleted", Types.BooleanType.get(), "Whether the
row has been deleted");
+ public static final NestedField SPEC = NestedField.required(
+ Integer.MAX_VALUE - 4, "_spec", Types.IntegerType.get(), "Spec ID to
which a row belongs to");
+ public static final int PARTITION_COLUMN_ID = Integer.MAX_VALUE - 5;
+ public static final String PARTITION_COLUMN_NAME = "_partition";
+ public static final String PARTITION_COLUMN_DOC = "Partition to which a row
belongs to";
Review comment:
Nit: I see here that this is so that we can have a later call to
`Partitioning.partitionType` (and possibly because it's optional).
But it took me a minute to see why this one is different. Possibly might
consider making it more clear or adding a comment? Even just `// Partition type
is not static so must be handled specially` might be good, though I know
sometimes we prefer the less comments route due to comment rot etc. Up to you 🙂
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