[core] Fix partition column generate wrong partition spec

docs/layouts/shortcodes/generated/core_configuration.html

@@ -569,6 +569,12 @@
             <td>Duration</td>
             <td>The expiration interval of a partition. A partition will be expired if it‘s lifetime is over this value. Partition time is extracted from the partition value.</td>
         </tr>
+        <tr>
+            <td><h5>partition.legacy-name</h5></td>
+            <td style="word-wrap: break-word;">true</td>
+            <td>Boolean</td>
+            <td>The legacy partition name is using `toString` fpr all types. If false, using cast to string for all types.</td>
+        </tr>
         <tr>
             <td><h5>partition.mark-done-action</h5></td>
             <td style="word-wrap: break-word;">"success-file"</td>

paimon-common/src/main/java/org/apache/paimon/CoreOptions.java

@@ -249,6 +249,14 @@ public class CoreOptions implements Serializable {
                             "The default partition name in case the dynamic partition"
                                     + " column value is null/empty string.");
 
+    public static final ConfigOption<Boolean> PARTITION_GENERATE_LEGCY_NAME =
+            key("partition.legacy-name")
+                    .booleanType()
+                    .defaultValue(true)
+                    .withDescription(
+                            "The legacy partition name is using `toString` fpr all types. If false, using "
+                                    + "cast to string for all types.");
+
     public static final ConfigOption<Integer> SNAPSHOT_NUM_RETAINED_MIN =
             key("snapshot.num-retained.min")
                     .intType()
@@ -1531,6 +1539,10 @@ public String partitionDefaultName() {
         return options.get(PARTITION_DEFAULT_NAME);
     }
 
+    public boolean legacyPartitionName() {
+        return options.get(PARTITION_GENERATE_LEGCY_NAME);
+    }
+
     public boolean sortBySize() {
         return options.get(SORT_RANG_STRATEGY) == RangeStrategy.SIZE;
     }

paimon-common/src/main/java/org/apache/paimon/utils/InternalRowPartitionComputer.java

@@ -20,6 +20,7 @@
 
 import org.apache.paimon.data.BinaryRow;
 import org.apache.paimon.data.InternalRow;
+import org.apache.paimon.types.DataType;
 import org.apache.paimon.types.RowType;
 
 import java.util.Arrays;
@@ -35,11 +36,18 @@ public class InternalRowPartitionComputer {
     protected final String defaultPartValue;
     protected final String[] partitionColumns;
     protected final InternalRow.FieldGetter[] partitionFieldGetters;
+    protected final List<DataType> types;
+    protected final boolean legacyPartitionName;
 
     public InternalRowPartitionComputer(
-            String defaultPartValue, RowType rowType, String[] partitionColumns) {
+            String defaultPartValue,
+            RowType rowType,
+            String[] partitionColumns,
+            boolean legacyPartitionName) {
         this.defaultPartValue = defaultPartValue;
         this.partitionColumns = partitionColumns;
+        this.types = rowType.getFieldTypes();
+        this.legacyPartitionName = legacyPartitionName;
         List<String> columnList = rowType.getFieldNames();
         this.partitionFieldGetters =
                 Arrays.stream(partitionColumns)
@@ -56,7 +64,8 @@ public LinkedHashMap<String, String> generatePartValues(InternalRow in) {
 
         for (int i = 0; i < partitionFieldGetters.length; i++) {
             Object field = partitionFieldGetters[i].getFieldOrNull(in);
-            String partitionValue = field != null ? field.toString() : null;
+            String partitionValue =
+                    TypeUtils.castPartitionValueToString(field, types.get(i), legacyPartitionName);
             if (StringUtils.isNullOrWhitespaceOnly(partitionValue)) {
                 partitionValue = defaultPartValue;
             }

paimon-common/src/main/java/org/apache/paimon/utils/TypeUtils.java

@@ -18,6 +18,8 @@
 
 package org.apache.paimon.utils;
 
+import org.apache.paimon.casting.CastExecutor;
+import org.apache.paimon.casting.CastExecutors;
 import org.apache.paimon.data.BinaryString;
 import org.apache.paimon.data.Decimal;
 import org.apache.paimon.data.GenericArray;
@@ -88,6 +90,24 @@ public static RowType project(RowType inputType, List<String> names) {
                         .collect(Collectors.toList()));
     }
 
+    public static String castPartitionValueToString(
+            Object value, DataType type, boolean legacyPartitionName) {
+        if (value == null) {
+            return null;
+        }
+        if (legacyPartitionName) {
+            return value.toString();
+        }
+
+        CastExecutor<Object, Object> castExecutor =
+                (CastExecutor<Object, Object>) CastExecutors.resolve(type, VarCharType.STRING_TYPE);
+        if (castExecutor == null) {
+            throw new UnsupportedOperationException(type + " is not supported");
+        }
+        Object result = castExecutor.cast(value);
+        return result == null ? null : result.toString();
+    }
+
     public static Object castFromString(String s, DataType type) {
         return castFromStringInternal(s, type, false);
     }

paimon-core/src/main/java/org/apache/paimon/AbstractFileStore.java

@@ -105,7 +105,8 @@ public FileStorePathFactory pathFactory() {
                 options.partitionDefaultName(),
                 options.fileFormat().getFormatIdentifier(),
                 options.dataFilePrefix(),
-                options.changelogFilePrefix());
+                options.changelogFilePrefix(),
+                options.legacyPartitionName());
     }
 
     @Override

paimon-core/src/main/java/org/apache/paimon/KeyValueFileStore.java

@@ -206,7 +206,8 @@ private Map<String, FileStorePathFactory> format2PathFactory() {
                                         options.partitionDefaultName(),
                                         format,
                                         options.dataFilePrefix(),
-                                        options.changelogFilePrefix())));
+                                        options.changelogFilePrefix(),
+                                        options.legacyPartitionName())));
         return pathFactoryMap;
     }
 

paimon-core/src/main/java/org/apache/paimon/operation/AbstractFileStoreWrite.java

@@ -88,6 +88,7 @@ public abstract class AbstractFileStoreWrite<T> implements FileStoreWrite<T> {
     protected CompactionMetrics compactionMetrics = null;
     protected final String tableName;
     private boolean isInsertOnly;
+    private boolean legacyPartitionName;
 
     protected AbstractFileStoreWrite(
             SnapshotManager snapshotManager,
@@ -97,7 +98,8 @@ protected AbstractFileStoreWrite(
             String tableName,
             int totalBuckets,
             RowType partitionType,
-            int writerNumberMax) {
+            int writerNumberMax,
+            boolean legacyPartitionName) {
         this.snapshotManager = snapshotManager;
         this.scan = scan;
         this.indexFactory = indexFactory;
@@ -107,6 +109,7 @@ protected AbstractFileStoreWrite(
         this.writers = new HashMap<>();
         this.tableName = tableName;
         this.writerNumberMax = writerNumberMax;
+        this.legacyPartitionName = legacyPartitionName;
     }
 
     @Override
@@ -469,7 +472,8 @@ private List<DataFileMeta> scanExistingFileMetas(
                                 ? "partition "
                                         + getPartitionComputer(
                                                         partitionType,
-                                                        PARTITION_DEFAULT_NAME.defaultValue())
+                                                        PARTITION_DEFAULT_NAME.defaultValue(),
+                                                        legacyPartitionName)
                                                 .generatePartValues(partition)
                                 : "table";
                 throw new RuntimeException(

paimon-core/src/main/java/org/apache/paimon/operation/MemoryFileStoreWrite.java

@@ -75,7 +75,8 @@ public MemoryFileStoreWrite(
                 tableName,
                 options.bucket(),
                 partitionType,
-                options.writeMaxWritersToSpill());
+                options.writeMaxWritersToSpill(),
+                options.legacyPartitionName());
         this.options = options;
         this.cacheManager = new CacheManager(options.lookupCacheMaxMemory());
     }

paimon-core/src/main/java/org/apache/paimon/utils/FileStorePathFactory.java

@@ -56,11 +56,13 @@ public FileStorePathFactory(
             String defaultPartValue,
             String formatIdentifier,
             String dataFilePrefix,
-            String changelogFilePrefix) {
+            String changelogFilePrefix,
+            boolean legacyPartitionName) {
         this.root = root;
         this.uuid = UUID.randomUUID().toString();
 
-        this.partitionComputer = getPartitionComputer(partitionType, defaultPartValue);
+        this.partitionComputer =
+                getPartitionComputer(partitionType, defaultPartValue, legacyPartitionName);
         this.formatIdentifier = formatIdentifier;
         this.dataFilePrefix = dataFilePrefix;
         this.changelogFilePrefix = changelogFilePrefix;
@@ -78,9 +80,10 @@ public Path root() {
 
     @VisibleForTesting
     public static InternalRowPartitionComputer getPartitionComputer(
-            RowType partitionType, String defaultPartValue) {
+            RowType partitionType, String defaultPartValue, boolean legacyPartitionName) {
         String[] partitionColumns = partitionType.getFieldNames().toArray(new String[0]);
-        return new InternalRowPartitionComputer(defaultPartValue, partitionType, partitionColumns);
+        return new InternalRowPartitionComputer(
+                defaultPartValue, partitionType, partitionColumns, legacyPartitionName);
     }
 
     public Path newManifestFile() {

paimon-core/src/test/java/org/apache/paimon/io/KeyValueFileReadWriteTest.java

@@ -228,7 +228,8 @@ protected KeyValueFileWriterFactory createWriterFactory(String pathStr, String f
                         CoreOptions.PARTITION_DEFAULT_NAME.defaultValue(),
                         format,
                         CoreOptions.DATA_FILE_PREFIX.defaultValue(),
-                        CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue());
+                        CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue(),
+                        CoreOptions.PARTITION_GENERATE_LEGCY_NAME.defaultValue());
         int suggestedFileSize = ThreadLocalRandom.current().nextInt(8192) + 1024;
         FileIO fileIO = FileIOFinder.find(path);
         Options options = new Options();
@@ -244,7 +245,8 @@ protected KeyValueFileWriterFactory createWriterFactory(String pathStr, String f
                         CoreOptions.PARTITION_DEFAULT_NAME.defaultValue(),
                         CoreOptions.FILE_FORMAT.defaultValue().toString(),
                         CoreOptions.DATA_FILE_PREFIX.defaultValue(),
-                        CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue()));
+                        CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue(),
+                        CoreOptions.PARTITION_GENERATE_LEGCY_NAME.defaultValue()));
 
         return KeyValueFileWriterFactory.builder(
                         fileIO,

paimon-core/src/test/java/org/apache/paimon/manifest/ManifestFileMetaTestBase.java

@@ -146,7 +146,8 @@ protected ManifestFile createManifestFile(String pathStr) {
                                 "default",
                                 CoreOptions.FILE_FORMAT.defaultValue(),
                                 CoreOptions.DATA_FILE_PREFIX.defaultValue(),
-                                CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue()),
+                                CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue(),
+                                CoreOptions.PARTITION_GENERATE_LEGCY_NAME.defaultValue()),
                         Long.MAX_VALUE,
                         null)
                 .create();

paimon-core/src/test/java/org/apache/paimon/manifest/ManifestFileTest.java

@@ -102,7 +102,8 @@ private ManifestFile createManifestFile(String pathStr) {
                         "default",
                         CoreOptions.FILE_FORMAT.defaultValue().toString(),
                         CoreOptions.DATA_FILE_PREFIX.defaultValue(),
-                        CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue());
+                        CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue(),
+                        CoreOptions.PARTITION_GENERATE_LEGCY_NAME.defaultValue());
         int suggestedFileSize = ThreadLocalRandom.current().nextInt(8192) + 1024;
         FileIO fileIO = FileIOFinder.find(path);
         return new ManifestFile.Factory(

paimon-core/src/test/java/org/apache/paimon/manifest/ManifestListTest.java

@@ -106,7 +106,8 @@ private ManifestList createManifestList(String pathStr) {
                         "default",
                         CoreOptions.FILE_FORMAT.defaultValue().toString(),
                         CoreOptions.DATA_FILE_PREFIX.defaultValue(),
-                        CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue());
+                        CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue(),
+                        CoreOptions.PARTITION_GENERATE_LEGCY_NAME.defaultValue());
         return new ManifestList.Factory(FileIOFinder.find(path), avro, "zstd", pathFactory, null)
                 .create();
     }

paimon-core/src/test/java/org/apache/paimon/utils/FileStorePathFactoryTest.java

@@ -87,7 +87,8 @@ public void testCreateDataFilePathFactoryWithPartition() {
                         "default",
                         CoreOptions.FILE_FORMAT.defaultValue().toString(),
                         CoreOptions.DATA_FILE_PREFIX.defaultValue(),
-                        CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue());
+                        CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue(),
+                        CoreOptions.PARTITION_GENERATE_LEGCY_NAME.defaultValue());
 
         assertPartition("20211224", 16, pathFactory, "/dt=20211224/hr=16");
         assertPartition("20211224", null, pathFactory, "/dt=20211224/hr=default");
@@ -124,6 +125,7 @@ public static FileStorePathFactory createNonPartFactory(Path root) {
                 PARTITION_DEFAULT_NAME.defaultValue(),
                 CoreOptions.FILE_FORMAT.defaultValue().toString(),
                 CoreOptions.DATA_FILE_PREFIX.defaultValue(),
-                CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue());
+                CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue(),
+                CoreOptions.PARTITION_GENERATE_LEGCY_NAME.defaultValue());
     }
 }

paimon-flink/paimon-flink-common/src/main/java/org/apache/paimon/flink/FlinkCatalog.java

@@ -1075,9 +1075,12 @@ private List<CatalogPartitionSpec> getPartitionSpecs(
                 getPartitionEntries(table, tablePath, partitionSpec);
         org.apache.paimon.types.RowType partitionRowType = table.schema().logicalPartitionType();
 
+        CoreOptions options = new CoreOptions(table.options());
         InternalRowPartitionComputer partitionComputer =
                 FileStorePathFactory.getPartitionComputer(
-                        partitionRowType, new CoreOptions(table.options()).partitionDefaultName());
+                        partitionRowType,
+                        options.partitionDefaultName(),
+                        options.legacyPartitionName());
 
         return partitionEntries.stream()
                 .map(

paimon-flink/paimon-flink-common/src/main/java/org/apache/paimon/flink/sink/partition/PartitionMarkDone.java

@@ -71,7 +71,8 @@ public static PartitionMarkDone create(
                 new InternalRowPartitionComputer(
                         coreOptions.partitionDefaultName(),
                         table.schema().logicalPartitionType(),
-                        table.partitionKeys().toArray(new String[0]));
+                        table.partitionKeys().toArray(new String[0]),
+                        coreOptions.legacyPartitionName());
 
         PartitionMarkDoneTrigger trigger =
                 PartitionMarkDoneTrigger.create(coreOptions, isRestored, stateStore);

paimon-flink/paimon-flink-common/src/test/java/org/apache/paimon/flink/source/TestChangelogDataReadWrite.java

@@ -107,7 +107,8 @@ public TestChangelogDataReadWrite(String root) {
                         "default",
                         CoreOptions.FILE_FORMAT.defaultValue().toString(),
                         CoreOptions.DATA_FILE_PREFIX.defaultValue(),
-                        CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue());
+                        CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue(),
+                        CoreOptions.PARTITION_GENERATE_LEGCY_NAME.defaultValue());
         this.snapshotManager = new SnapshotManager(LocalFileIO.create(), new Path(root));
         this.commitUser = UUID.randomUUID().toString();
     }

paimon-hive/paimon-hive-catalog/src/main/java/org/apache/paimon/hive/HiveMetastoreClient.java

@@ -56,11 +56,13 @@ public class HiveMetastoreClient implements MetastoreClient {
             ClientPool<IMetaStoreClient, TException> clients)
             throws TException, InterruptedException {
         this.identifier = identifier;
+        CoreOptions options = new CoreOptions(schema.options());
         this.partitionComputer =
                 new InternalRowPartitionComputer(
-                        new CoreOptions(schema.options()).partitionDefaultName(),
+                        options.partitionDefaultName(),
                         schema.logicalPartitionType(),
-                        schema.partitionKeys().toArray(new String[0]));
+                        schema.partitionKeys().toArray(new String[0]),
+                        options.legacyPartitionName());
 
         this.clients = clients;
         this.sd =

paimon-spark/paimon-spark-common/src/main/scala/org/apache/paimon/spark/PaimonPartitionManagement.scala

@@ -18,6 +18,7 @@
 
 package org.apache.paimon.spark
 
+import org.apache.paimon.CoreOptions
 import org.apache.paimon.metastore.MetastoreClient
 import org.apache.paimon.operation.FileStoreCommit
 import org.apache.paimon.table.FileStoreTable
@@ -31,7 +32,6 @@ import org.apache.spark.sql.catalyst.util.CharVarcharUtils
 import org.apache.spark.sql.connector.catalog.SupportsAtomicPartitionManagement
 import org.apache.spark.sql.types.StructType
 
-import java.util
 import java.util.{Map => JMap, Objects, UUID}
 
 import scala.collection.JavaConverters._
@@ -52,7 +52,8 @@ trait PaimonPartitionManagement extends SupportsAtomicPartitionManagement {
         val rowDataPartitionComputer = new InternalRowPartitionComputer(
           fileStoreTable.coreOptions().partitionDefaultName(),
           partitionRowType,
-          table.partitionKeys().asScala.toArray)
+          table.partitionKeys().asScala.toArray,
+          CoreOptions.fromMap(table.options()).legacyPartitionName)
 
         rows.map {
           r =>

paimon-spark/paimon-spark-common/src/main/scala/org/apache/paimon/spark/commands/DeleteFromPaimonTableCommand.scala

@@ -83,7 +83,8 @@ case class DeleteFromPaimonTableCommand(
         val rowDataPartitionComputer = new InternalRowPartitionComputer(
           table.coreOptions().partitionDefaultName(),
           table.schema().logicalPartitionType(),
-          table.partitionKeys.asScala.toArray
+          table.partitionKeys.asScala.toArray,
+          table.coreOptions().legacyPartitionName()
         )
         val dropPartitions = matchedPartitions.map {
           partition => rowDataPartitionComputer.generatePartValues(partition).asScala.asJava

paimon-spark/paimon-spark-common/src/main/scala/org/apache/paimon/spark/sources/StreamHelper.scala

@@ -49,12 +49,15 @@ private[spark] trait StreamHelper {
   private lazy val partitionSchema: StructType =
     SparkTypeUtils.fromPaimonRowType(TypeUtils.project(table.rowType(), table.partitionKeys()))
 
-  private lazy val partitionComputer: InternalRowPartitionComputer =
+  private lazy val partitionComputer: InternalRowPartitionComputer = {
+    val options = new CoreOptions(table.options)
     new InternalRowPartitionComputer(
-      new CoreOptions(table.options).partitionDefaultName,
+      options.partitionDefaultName,
       TypeUtils.project(table.rowType(), table.partitionKeys()),
-      table.partitionKeys().asScala.toArray
+      table.partitionKeys().asScala.toArray,
+      options.legacyPartitionName()
     )
+  }
 
   // Used to get the initial offset.
   lazy val streamScanStartingContext: StartingContext = streamScan.startingContext()

paimon-spark/paimon-spark-common/src/test/java/org/apache/paimon/spark/SparkFileIndexITCase.java

@@ -130,7 +130,8 @@ protected void foreachIndexReader(Consumer<FileIndexReader> consumer)
                         new CoreOptions(new Options()).partitionDefaultName(),
                         CoreOptions.FILE_FORMAT.defaultValue().toString(),
                         CoreOptions.DATA_FILE_PREFIX.defaultValue(),
-                        CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue());
+                        CoreOptions.CHANGELOG_FILE_PREFIX.defaultValue(),
+                        CoreOptions.PARTITION_GENERATE_LEGCY_NAME.defaultValue());
 
         Table table = fileSystemCatalog.getTable(Identifier.create("db", "T"));
         ReadBuilder readBuilder = table.newReadBuilder();