dramaticlly commented on code in PR #6680:
URL: https://github.com/apache/iceberg/pull/6680#discussion_r1089341074
##########
core/src/test/java/org/apache/iceberg/TestDeleteFiles.java:
##########
@@ -349,6 +352,54 @@ public void testDeleteFilesOnIndependentBranches() {
statuses(Status.EXISTING, Status.DELETED, Status.DELETED));
}
+ @Test
+ public void testDeleteWithCollision() {
+ Schema schema = new Schema(Types.NestedField.of(0, false, "x",
Types.StringType.get()));
+ PartitionSpec spec =
PartitionSpec.builderFor(schema).identity("x").build();
+ Table collisionTable =
+ TestTables.create(tableDir, "hashcollision", schema, spec,
formatVersion);
+
+ PartitionData partitionOne = new PartitionData(spec.partitionType());
+ partitionOne.set(0, "Aa");
+ PartitionData partitionTwo = new PartitionData(spec.partitionType());
+ partitionTwo.set(0, "BB");
+
+ Assert.assertEquals(
+
StructLikeWrapper.forType(spec.partitionType()).set(partitionOne).hashCode(),
+
StructLikeWrapper.forType(spec.partitionType()).set(partitionTwo).hashCode());
+
+ Metrics metrics = new Metrics(1L, null, null, null, null);
+
+ DataFile testFileOne =
+ DataFiles.builder(spec)
+ .withPartition(partitionOne)
+ .withPath("/g1.parquet")
+ .withFileSizeInBytes(100)
+ .withMetrics(metrics)
+ .build();
+ DataFile testFileTwo =
+ DataFiles.builder(spec)
+ .withPartition(partitionTwo)
+ .withMetrics(metrics)
+ .withFileSizeInBytes(100)
+ .withPath("/g2.parquet")
+ .build();
+
+
collisionTable.newFastAppend().appendFile(testFileOne).appendFile(testFileTwo).commit();
+
+ Assert.assertEquals(
+ "We should have two files",
+ 2,
+
Lists.newArrayList(collisionTable.newScan().planFiles().iterator()).size());
+
+ collisionTable.newDelete().deleteFromRowFilter(Expressions.equal("x",
"BB")).commit();
+
+ Assert.assertEquals(
+ "We should have deleted one of them",
+ 1,
+
Lists.newArrayList(collisionTable.newScan().planFiles().iterator()).size());
Review Comment:
nit: might be a bit redundant, but I am curious if we shall verify the
remaining files is correct and we deleted the desired partition instead?
I am thinking about maybe something like
```java
Assert.assertEquals(
partitionOne,
collisionTable.newScan().planFiles().iterator().next().file().partition());
```
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