nsivabalan commented on pull request #2334:
URL: https://github.com/apache/hudi/pull/2334#issuecomment-812516130
Yeah, I did verify by enabling schema compatability check. it will fail if
we try to evolve a field from double to int.
```
scala> dfFromData5.write.format("hudi").
| options(getQuickstartWriteConfigs).
| option(PRECOMBINE_FIELD_OPT_KEY, "preComb").
| option(RECORDKEY_FIELD_OPT_KEY, "rowId").
| option(PARTITIONPATH_FIELD_OPT_KEY, "partitionId").
| option("hoodie.index.type","SIMPLE").
| option(TABLE_NAME, tableName).
| option("hoodie.avro.schema.validate","true").
| mode(Append).
| save(basePath)
org.apache.hudi.exception.HoodieUpsertException: Failed upsert schema
compatibility check.
at
org.apache.hudi.table.HoodieTable.validateUpsertSchema(HoodieTable.java:629)
at
org.apache.hudi.client.SparkRDDWriteClient.upsert(SparkRDDWriteClient.java:152)
at
org.apache.hudi.DataSourceUtils.doWriteOperation(DataSourceUtils.java:214)
at
org.apache.hudi.HoodieSparkSqlWriter$.write(HoodieSparkSqlWriter.scala:186)
at org.apache.hudi.DefaultSource.createRelation(DefaultSource.scala:145)
at
org.apache.spark.sql.execution.datasources.SaveIntoDataSourceCommand.run(SaveIntoDataSourceCommand.scala:45)
at
org.apache.spark.sql.execution.command.ExecutedCommandExec.sideEffectResult$lzycompute(commands.scala:70)
at
org.apache.spark.sql.execution.command.ExecutedCommandExec.sideEffectResult(commands.scala:68)
at
org.apache.spark.sql.execution.command.ExecutedCommandExec.doExecute(commands.scala:86)
at
org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$1.apply(SparkPlan.scala:131)
at
org.apache.spark.sql.execution.SparkPlan$$anonfun$execute$1.apply(SparkPlan.scala:127)
at
org.apache.spark.sql.execution.SparkPlan$$anonfun$executeQuery$1.apply(SparkPlan.scala:155)
at
org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151)
at
org.apache.spark.sql.execution.SparkPlan.executeQuery(SparkPlan.scala:152)
at org.apache.spark.sql.execution.SparkPlan.execute(SparkPlan.scala:127)
at
org.apache.spark.sql.execution.QueryExecution.toRdd$lzycompute(QueryExecution.scala:83)
at
org.apache.spark.sql.execution.QueryExecution.toRdd(QueryExecution.scala:81)
at
org.apache.spark.sql.DataFrameWriter$$anonfun$runCommand$1.apply(DataFrameWriter.scala:677)
at
org.apache.spark.sql.DataFrameWriter$$anonfun$runCommand$1.apply(DataFrameWriter.scala:677)
at
org.apache.spark.sql.execution.SQLExecution$$anonfun$withNewExecutionId$1.apply(SQLExecution.scala:80)
at
org.apache.spark.sql.execution.SQLExecution$.withSQLConfPropagated(SQLExecution.scala:127)
at
org.apache.spark.sql.execution.SQLExecution$.withNewExecutionId(SQLExecution.scala:75)
at
org.apache.spark.sql.DataFrameWriter.runCommand(DataFrameWriter.scala:677)
at
org.apache.spark.sql.DataFrameWriter.saveToV1Source(DataFrameWriter.scala:286)
at org.apache.spark.sql.DataFrameWriter.save(DataFrameWriter.scala:272)
at org.apache.spark.sql.DataFrameWriter.save(DataFrameWriter.scala:230)
... 72 elided
Caused by: org.apache.hudi.exception.HoodieException: Failed schema
compatibility check for writerSchema
:{"type":"record","name":"hudi_trips_cow_record","namespace":"hoodie.hudi_trips_cow","fields":[{"name":"_hoodie_commit_time","type":["null","string"],"doc":"","default":null},{"name":"_hoodie_commit_seqno","type":["null","string"],"doc":"","default":null},{"name":"_hoodie_record_key","type":["null","string"],"doc":"","default":null},{"name":"_hoodie_partition_path","type":["null","string"],"doc":"","default":null},{"name":"_hoodie_file_name","type":["null","string"],"doc":"","default":null},{"name":"rowId","type":["string","null"]},{"name":"partitionId","type":["string","null"]},{"name":"preComb","type":["long","null"]},{"name":"name","type":["string","null"]},{"name":"versionId","type":["string","null"]},{"name":"doubleToInt","type":["int","null"]}]},
table schema
:{"type":"record","name":"hudi_trips_cow_record","namespace":"hoodie.hudi_trips_cow","fields":[{"name":"_hoodie_co
mmit_time","type":["null","string"],"doc":"","default":null},{"name":"_hoodie_commit_seqno","type":["null","string"],"doc":"","default":null},{"name":"_hoodie_record_key","type":["null","string"],"doc":"","default":null},{"name":"_hoodie_partition_path","type":["null","string"],"doc":"","default":null},{"name":"_hoodie_file_name","type":["null","string"],"doc":"","default":null},{"name":"rowId","type":["string","null"]},{"name":"partitionId","type":["string","null"]},{"name":"preComb","type":["long","null"]},{"name":"name","type":["string","null"]},{"name":"versionId","type":["string","null"]},{"name":"doubleToInt","type":["double","null"]}]},
base path :file:/tmp/hudi_trips_cow
at org.apache.hudi.table.HoodieTable.validateSchema(HoodieTable.java:621)
at
org.apache.hudi.table.HoodieTable.validateUpsertSchema(HoodieTable.java:627)
... 97 more
```
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