rdblue commented on a change in pull request #922: URL: https://github.com/apache/iceberg/pull/922#discussion_r441153291
########## File path: core/src/test/java/org/apache/iceberg/TestPartitionSpecUpdate.java ########## @@ -0,0 +1,255 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.iceberg; + +import org.junit.Assert; +import org.junit.Test; +import org.junit.runner.RunWith; +import org.junit.runners.Parameterized; + +@RunWith(Parameterized.class) +public class TestPartitionSpecUpdate extends TableTestBase { + + private int[] expectedFieldIds; + + private String[] expectedSpecs; + + @Parameterized.Parameters + public static Object[][] parameters() { + return new Object[][] { + new Object[] { 1, new int[]{ 1000, 1001, 1001, 1000, 1000 }, + new String[]{" 1000: data_bucket_removed: void(2)\n", " 1002: id_bucket_removed: void(1)\n"} }, + new Object[] { 2, new int[]{ 1001, 1000, 1001, 1002, 1002 }, new String[]{"", ""} }, + }; + } + + public TestPartitionSpecUpdate(int formatVersion, int[] expectedFieldIds, String[] expectedSpecs) { + super(formatVersion); + this.expectedFieldIds = expectedFieldIds; + this.expectedSpecs = expectedSpecs; + } + + @Test + public void testCommitUpdatedSpec() { + Assert.assertEquals("[\n" + + " 1000: data_bucket: bucket[16](2)\n" + + "]", table.spec().toString()); + Assert.assertEquals(1000, table.spec().lastAssignedFieldId()); + + table.updateSpec().clear() + .addBucketField("id", 8) + .addBucketField("data", 16) + .commit(); Review comment: I'm not sure this change makes sense. Why would someone drop the `bucket_16(data)` field only to add it back? I think this should be detected as an error because the field is compatible with a previous field. If we don't detect this case and throw an exception, then it would be easy for a user to create two fields with the exact same configuration, leading to needless and confusing duplication in the metadata tables. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
