[GitHub] [hudi] Reimus commented on issue #5915: [SUPPORT] Schema Evolution - Changing field type from Date to String is not supported

[GitBox <gi...@apache.org>]

Reimus commented on issue #5915:
URL: https://github.com/apache/hudi/issues/5915#issuecomment-1163824902

   @minihippo 
   No, just a regular field.
   It was included in the data skipping index though.
   
   Here is a creation / update spark.write commands I'm using to add/save data
   ```
    ds.write
         .format("hudi")
         .mode(SaveMode.Append)
         .option(DataSourceWriteOptions.PRECOMBINE_FIELD.key, "ts")
         .option(DataSourceWriteOptions.RECORDKEY_FIELD.key, "id")
         .option(DataSourceWriteOptions.PARTITIONPATH_FIELD.key, "ym")
         .option(DataSourceWriteOptions.OPERATION.key, DataSourceWriteOptions.UPSERT_OPERATION_OPT_VAL)
         .option(HoodieWriteConfig.TBL_NAME.key, tableName)
         .option(DataSourceWriteOptions.RECONCILE_SCHEMA.key, "true")
         .option(DataSourceWriteOptions.TABLE_TYPE.key, DataSourceWriteOptions.MOR_TABLE_TYPE_OPT_VAL)
         .option(DataSourceWriteOptions.OPERATION.key, DataSourceWriteOptions.UPSERT_OPERATION_OPT_VAL)
         .option(HoodieTableConfig.TIMELINE_TIMEZONE.key, HoodieTimelineTimeZone.UTC.name)
         .option(HoodieWriteConfig.SCHEMA_EVOLUTION_ENABLE.key, "true")
         .option(HoodieWriteConfig.AVRO_SCHEMA_VALIDATE_ENABLE.key, "true")
         .option(HoodieWriteConfig.WRITE_CONCURRENCY_MODE.key, WriteConcurrencyMode.OPTIMISTIC_CONCURRENCY_CONTROL.name())
         .option(HoodieIndexConfig.BLOOM_FILTER_TYPE.key, BloomFilterTypeCode.DYNAMIC_V0.name)
         .option(HoodieIndexConfig.BLOOM_FILTER_NUM_ENTRIES_VALUE.key, String.valueOf(100000))
         .option(HoodieIndexConfig.BLOOM_INDEX_USE_METADATA.key, "true")
         .option(HoodieIndexConfig.BLOOM_INDEX_FILTER_DYNAMIC_MAX_ENTRIES.key, String.valueOf(1000000))
         .option(HoodieLockConfig.HIVE_DATABASE_NAME.key, databaseName)
         .option(HoodieLockConfig.HIVE_TABLE_NAME.key, tableName)
         .option(HoodieLockConfig.HIVE_METASTORE_URI.key, env.spark.hiveMetastore)
         .option(HoodieLockConfig.LOCK_PROVIDER_CLASS_NAME.key, classOf[org.apache.hudi.hive.HiveMetastoreBasedLockProvider].getName)
         .option(HoodieStorageConfig.PARQUET_MAX_FILE_SIZE.key, String.valueOf(256 * 1024 * 1024))
         .option(HoodieStorageConfig.PARQUET_BLOCK_SIZE.key, String.valueOf(256 * 1024 * 1024))
         .option(HoodieCompactionConfig.AUTO_CLEAN.key, "true")
         .option(HoodieCompactionConfig.FAILED_WRITES_CLEANER_POLICY.key, HoodieFailedWritesCleaningPolicy.LAZY.name)
   
         .option(HoodieCompactionConfig.CLEANER_POLICY.key, HoodieCleaningPolicy.KEEP_LATEST_BY_HOURS.name())
         .option(HoodieCompactionConfig.CLEANER_HOURS_RETAINED.key, String.valueOf(24))
         .option(HoodieCompactionConfig.PARQUET_SMALL_FILE_LIMIT.key, String.valueOf(104857600))
   
         .option(HoodieMetadataConfig.COLUMN_STATS_INDEX_FOR_COLUMNS.key, "ym,ymd,date,ts,lvl1.ymd,lvl1.lvl2.date")
         .option(HoodieMetadataConfig.BLOOM_FILTER_INDEX_FOR_COLUMNS.key, "id,col1,col2")
         .option(HoodieMetadataConfig.POPULATE_META_FIELDS.key, "true")
         .option(HoodieMetadataConfig.ENABLE_METADATA_INDEX_COLUMN_STATS.key, "true")
         .option(HoodieMetadataConfig.ENABLE_METADATA_INDEX_BLOOM_FILTER.key, "true")
         .option(HoodieMetadataConfig.ENABLE.key, "true")
         .save("/tmp/hudi")
   ```
   
   Partition field is `ym` field (string) - ymd is a regular date field.
   


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