24-3: Stop writing indexImplTables' split boundaries to backups (ydb-platform#10680)

Author: jepett0

ydb/core/tx/schemeshard/schemeshard_export_flow_proposals.cpp

@@ -76,7 +76,6 @@ static NKikimrSchemeOp::TPathDescription GetTableDescription(TSchemeShard* ss, c
     opts.SetReturnPartitioningInfo(false);
     opts.SetReturnPartitionConfig(true);
     opts.SetReturnBoundaries(true);
-    opts.SetReturnIndexTableBoundaries(true);
 
     auto desc = DescribePath(ss, TlsActivationContext->AsActorContext(), pathId, opts);
     auto record = desc->GetRecord();

ydb/services/ydb/backup_ut/ydb_backup_ut.cpp

@@ -249,68 +249,6 @@ void TestTableSplitBoundariesArePreserved(
     UNIT_ASSERT_EQUAL(restoredTableDescription.GetKeyRanges(), originalKeyRanges);
 }
 
-void TestIndexTableSplitBoundariesArePreserved(
-    const char* table, const char* index, ui64 indexPartitions, TSession& session,
-    TBackupFunction&& backup, TRestoreFunction&& restore
-) {
-    const TString indexTablePath = JoinFsPaths(table, index, "indexImplTable");
-
-    {
-        TExplicitPartitions indexPartitionBoundaries;
-        for (ui32 boundary : {1, 2, 4, 8, 16, 32, 64, 128, 256}) {
-            indexPartitionBoundaries.AppendSplitPoints(
-                // split boundary is technically always a tuple
-                TValueBuilder().BeginTuple().AddElement().OptionalUint32(boundary).EndTuple().Build()
-            );
-        }
-        // By default indexImplTable has auto partitioning by size enabled,
-        // so you must set min partition count for partitions to not merge immediately after indexImplTable is built.
-        TPartitioningSettingsBuilder partitioningSettingsBuilder;
-        partitioningSettingsBuilder
-            .SetMinPartitionsCount(indexPartitions)
-            .SetMaxPartitionsCount(indexPartitions);
-
-        const auto indexSettings = TGlobalIndexSettings{
-            .PartitioningSettings = partitioningSettingsBuilder.Build(),
-            .Partitions = std::move(indexPartitionBoundaries)
-        };
-
-        auto tableBuilder = TTableBuilder()
-            .AddNullableColumn("Key", EPrimitiveType::Uint32)
-            .AddNullableColumn("Value", EPrimitiveType::Uint32)
-            .SetPrimaryKeyColumn("Key")
-            .AddSecondaryIndex(TIndexDescription("byValue", EIndexType::GlobalSync, { "Value" }, {}, { indexSettings }));
-
-        const auto result = session.CreateTable(table, tableBuilder.Build()).ExtractValueSync();
-        UNIT_ASSERT_C(result.IsSuccess(), result.GetIssues().ToString());
-    }
-    const auto describeSettings = TDescribeTableSettings()
-            .WithTableStatistics(true)
-            .WithKeyShardBoundary(true);
-    const auto originalIndexTableDescription = GetTableDescription(
-        session, indexTablePath, describeSettings
-    );
-    UNIT_ASSERT_VALUES_EQUAL(originalIndexTableDescription.GetPartitionsCount(), indexPartitions);
-    const auto& originalKeyRanges = originalIndexTableDescription.GetKeyRanges();
-    UNIT_ASSERT_VALUES_EQUAL(originalKeyRanges.size(), indexPartitions);
-
-    backup(table);
-
-    ExecuteDataDefinitionQuery(session, Sprintf(R"(
-            DROP TABLE `%s`;
-        )", table
-    ));
-
-    restore(table);
-    const auto restoredIndexTableDescription = GetTableDescription(
-        session, indexTablePath, describeSettings
-    );
-    UNIT_ASSERT_VALUES_EQUAL(restoredIndexTableDescription.GetPartitionsCount(), indexPartitions);
-    const auto& restoredKeyRanges = restoredIndexTableDescription.GetKeyRanges();
-    UNIT_ASSERT_VALUES_EQUAL(restoredKeyRanges.size(), indexPartitions);
-    UNIT_ASSERT_EQUAL(restoredKeyRanges, originalKeyRanges);
-}
-
 }
 
 Y_UNIT_TEST_SUITE(BackupRestore) {
@@ -607,20 +545,4 @@ Y_UNIT_TEST_SUITE(BackupRestoreS3) {
         );
     }
 
-    Y_UNIT_TEST(RestoreIndexTableSplitBoundaries) {
-        TS3TestEnv testEnv;
-        constexpr const char* table = "/Root/table";
-        constexpr const char* index = "byValue";
-        constexpr ui64 indexPartitions = 10;
-
-        TestIndexTableSplitBoundariesArePreserved(
-            table,
-            index,
-            indexPartitions,
-            testEnv.GetSession(),
-            CreateBackupLambda(testEnv.GetDriver(), testEnv.GetS3Port()),
-            CreateRestoreLambda(testEnv.GetDriver(), testEnv.GetS3Port())
-        );
-    }
-
 }