lirui-apache commented on code in PR #15276:
URL: https://github.com/apache/iceberg/pull/15276#discussion_r2787653194
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core/src/test/java/org/apache/iceberg/TestMetadataTableScans.java:
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@@ -1752,6 +1752,82 @@ public void testEntriesTableEstimateSize() throws
Exception {
assertEstimatedRowCount(new AllEntriesTable(table), 4);
}
+ @TestTemplate
+ public void testMetadataTableScansOnBranch() throws IOException {
+ table.newFastAppend().appendFile(FILE_A).commit();
+ table.manageSnapshots().createBranch("testBranch").commit();
+ table.newFastAppend().appendFile(FILE_B).commit();
+
+ Table entriesTable = new ManifestEntriesTable(table);
+ assertThat(
+ rowCount(
+ entriesTable
+ .newScan()
+ .useRef("testBranch")
+ .select("status")
+
.filter(Expressions.lessThan("data_file.partition.data_bucket", 0))))
+ .as("ManifestEntriesTable on branch should have no entry satisfying
the filter")
+ .isEqualTo(0);
+ assertThat(rowCount(entriesTable.newScan()))
+ .as("ManifestEntriesTable on main should have 2 entries")
+ .isEqualTo(2);
+
+ Table dataFilesTable = new DataFilesTable(table);
+ assertThat(rowCount(dataFilesTable.newScan().useRef("testBranch")))
+ .as("DataFilesTable on branch should have 1 file")
+ .isEqualTo(1);
+ assertThat(rowCount(dataFilesTable.newScan()))
Review Comment:
I believe this will produce the same results for entries/files table. But
for ManifestsTable, both main and testBranch will have 1 scan task. Is that OK?
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