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[HUDI-1129] Improving schema evolution support in hudi (#2927)

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* Adding support to ingest records with old schema after table's schema is evolved

* Rebasing against latest master

- Trimming test file to be < 800 lines
- Renaming config names

* Addressing feedback

Co-authored-by: Vinoth Chandar <vinoth@apache.org>
This commit is contained in:
Sivabalan Narayanan
2021-08-10 12:15:37 -04:00
committed by GitHub
parent 73d898322b
commit 1196736185
22 changed files with 778 additions and 213 deletions
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7
hudi-spark-datasource/hudi-spark-common/src/main/scala/org/apache/hudi/DataSourceOptions.scala
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@@ -308,6 +308,13 @@ object DataSourceWriteOptions {
.defaultValue(classOf[HiveSyncTool].getName)
.withDocumentation("Sync tool class name used to sync to metastore. Defaults to Hive.")
val RECONCILE_SCHEMA: ConfigProperty[Boolean] = ConfigProperty
.key("hoodie.datasource.write.reconcile.schema")
.defaultValue(false)
.withDocumentation("When a new batch of write has records with old schema, but latest table schema got "
+ "evolved, this config will upgrade the records to leverage latest table schema(default values will be "
+ "injected to missing fields). If not, the write batch would fail.")
// HIVE SYNC SPECIFIC CONFIGS
// NOTE: DO NOT USE uppercase for the keys as they are internally lower-cased. Using upper-cases causes
// unexpected issues with config getting reset