yihua commented on code in PR #13046:
URL: https://github.com/apache/hudi/pull/13046#discussion_r2019616518
##########
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/table/upgrade/SevenToEightUpgradeHandler.java:
##########
@@ -178,23 +179,68 @@ static void upgradePartitionFields(HoodieWriteConfig
config, HoodieTableConfig t
}
static void upgradeMergeMode(HoodieTableConfig tableConfig,
Map<ConfigProperty, String> tablePropsToAdd) {
- if (tableConfig.getPayloadClass() != null
- &&
tableConfig.getPayloadClass().equals(OverwriteWithLatestAvroPayload.class.getName()))
{
- if (HoodieTableType.COPY_ON_WRITE == tableConfig.getTableType()) {
+ String payloadClass = tableConfig.getPayloadClass();
+ String preCombineField = tableConfig.getPreCombineField();
+ if (isCustomPayloadClass(payloadClass)) {
+ // This contains a special case: HoodieMetadataPayload.
+ tablePropsToAdd.put(
+ HoodieTableConfig.PAYLOAD_CLASS_NAME,
+ payloadClass);
+ tablePropsToAdd.put(
+ HoodieTableConfig.RECORD_MERGE_MODE,
+ RecordMergeMode.CUSTOM.name());
+ tablePropsToAdd.put(
+ HoodieTableConfig.RECORD_MERGE_STRATEGY_ID,
+ HoodieRecordMerger.PAYLOAD_BASED_MERGE_STRATEGY_UUID);
+ } else if (StringUtils.nonEmpty(preCombineField)) {
+ // This contains a special case: OverwriteWithLatestPayload with
preCombine field.
+ tablePropsToAdd.put(
+ HoodieTableConfig.PAYLOAD_CLASS_NAME,
+ DefaultHoodieRecordPayload.class.getName());
Review Comment:
For table version 8, the merge mode, payload class and custom merger configs
(strategy ID and implementation class) are always consistent. So the upgrade
process should maintain that.
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