rdblue commented on a change in pull request #285: Update metadata tables for
unpartitioned tables
URL: https://github.com/apache/incubator-iceberg/pull/285#discussion_r304002353
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File path: core/src/main/java/org/apache/iceberg/DataFilesTable.java
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@@ -51,12 +53,18 @@ String metadataTableName() {
@Override
public TableScan newScan() {
- return new FilesTableScan(ops, table);
+ return new FilesTableScan(ops, table, schema());
}
@Override
public Schema schema() {
- return new Schema(DataFile.getType(table.spec().partitionType()).fields());
+ Schema schema = new
Schema(DataFile.getType(table.spec().partitionType()).fields());
+ if (table.spec().fields().size() < 1) {
+ // avoid returning an empty struct, which is not always supported.
instead, drop the partition field (id 102)
+ return TypeUtil.selectNot(schema, Sets.newHashSet(102));
Review comment:
These IDs are [part of the spec](http://iceberg.apache.org/spec/#manifests),
so I think it is better to use the IDs than to use names. That's why I added a
comment to explain which field is being removed.
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