vinothchandar commented on a change in pull request #1457: [HUDI-741] Added
checks to validate Hoodie's schema evolution.
URL: https://github.com/apache/incubator-hudi/pull/1457#discussion_r400284466
##########
File path:
hudi-client/src/main/java/org/apache/hudi/client/HoodieWriteClient.java
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@@ -457,6 +461,37 @@ private void
saveWorkloadProfileMetadataToInflight(WorkloadProfile profile, Hood
private JavaRDD<WriteStatus> upsertRecordsInternal(JavaRDD<HoodieRecord<T>>
preppedRecords, String commitTime,
HoodieTable<T> hoodieTable, final boolean isUpsert) {
+ if (getConfig().getSchemaCheck()) {
+ // Ensure that the current writerSchema is compatible with the latest
schema of this
+ // dataset.
+ // When inserting/updating data, we read records using the schema saved
in the
+ // data/log files and convert them to the GenericRecords with
writerSchema.
+ // Hence, we need to ensure that this conversion can take place without
errors.
+ try {
+ SchemaUtil schemaUtil = new SchemaUtil(hoodieTable.getMetaClient());
+ MessageType savedParquetSchema = schemaUtil.getDataSchema();
+ Schema savedSchema =
schemaUtil.convertParquetSchemaToAvro(savedParquetSchema);
+ Schema writerSchema =
HoodieWriteHandle.createHoodieWriteSchema(config.getSchema());
+ if (! schemaUtil.isSchemaCompatible(savedSchema, writerSchema)) {
+ String msg = "WriterSchema is not compatible with the schema present
in the Table";
+ LOG.error(msg);
Review comment:
lets have this as a single ERROR statement?
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