ChiehFu opened a new issue, #8780:
URL: https://github.com/apache/hudi/issues/8780
**Describe the problem you faced**
Hi,
I have a use case where I want to change the hudi precombine field of an
insert_overwrite (with combine-before-insert enabled) table due the existing
precombine field being not sufficient to break the tie when records having the
same primary keys show up.
Considering that the table has a lot of historical data, I wanted to
directly update the precombine field without needing to re-onboard the entire
table and re-ingest all historical data.
I've attempted to directly set `hoodie.datasource.write.precombine.field` to
the new field with a spark job, but received hudi exception for config
conflict. (The stack trace is attached at the end)
Also, in `hoodie.properties` file there is a property named
`hoodie.table.precombine.field`, I wonder if this is the source of truth field
hudi refers to for precombine field, and if it's safe to directly update that
field in the file to force hudi to switch to the new field without risking the
table being corrupted?
Could you please provide some guidance on this?
**Environment Description**
* Hudi version : 12.0.3
* Spark version : 3.3.0
* Hive version : 3.1.3
* Hadoop version : 3.3.3
* Storage (HDFS/S3/GCS..) : S3
* Running on Docker? (yes/no) : no
**Additional context**
Add any other context about the problem here.
**Stacktrace**
```
ERROR Client: Application diagnostics message: User class threw exception:
org.apache.hudi.exception.HoodieException: Config conflict(key current value
existing value):
PreCombineKey: sort_key_a sort_key_b
at
org.apache.hudi.HoodieWriterUtils$.validateTableConfig(HoodieWriterUtils.scala:166)
at
org.apache.hudi.HoodieSparkSqlWriter$.write(HoodieSparkSqlWriter.scala:90)
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:75)
at
org.apache.spark.sql.execution.command.ExecutedCommandExec.sideEffectResult(commands.scala:73)
at
org.apache.spark.sql.execution.command.ExecutedCommandExec.executeCollect(commands.scala:84)
at
org.apache.spark.sql.execution.QueryExecution$$anonfun$eagerlyExecuteCommands$1.$anonfun$applyOrElse$1(QueryExecution.scala:103)
at
org.apache.spark.sql.catalyst.QueryPlanningTracker$.withTracker(QueryPlanningTracker.scala:107)
at
org.apache.spark.sql.execution.SQLExecution$.withTracker(SQLExecution.scala:224)
at
org.apache.spark.sql.execution.SQLExecution$.executeQuery$1(SQLExecution.scala:114)
at
org.apache.spark.sql.execution.SQLExecution$.$anonfun$withNewExecutionId$7(SQLExecution.scala:139)
at
org.apache.spark.sql.catalyst.QueryPlanningTracker$.withTracker(QueryPlanningTracker.scala:107)
at
org.apache.spark.sql.execution.SQLExecution$.withTracker(SQLExecution.scala:224)
at
org.apache.spark.sql.execution.SQLExecution$.$anonfun$withNewExecutionId$6(SQLExecution.scala:139)
at
org.apache.spark.sql.execution.SQLExecution$.withSQLConfPropagated(SQLExecution.scala:245)
at
org.apache.spark.sql.execution.SQLExecution$.$anonfun$withNewExecutionId$1(SQLExecution.scala:138)
at org.apache.spark.sql.SparkSession.withActive(SparkSession.scala:779)
at
org.apache.spark.sql.execution.SQLExecution$.withNewExecutionId(SQLExecution.scala:68)
at
org.apache.spark.sql.execution.QueryExecution$$anonfun$eagerlyExecuteCommands$1.applyOrElse(QueryExecution.scala:100)
at
org.apache.spark.sql.execution.QueryExecution$$anonfun$eagerlyExecuteCommands$1.applyOrElse(QueryExecution.scala:96)
at
org.apache.spark.sql.catalyst.trees.TreeNode.$anonfun$transformDownWithPruning$1(TreeNode.scala:615)
at
org.apache.spark.sql.catalyst.trees.CurrentOrigin$.withOrigin(TreeNode.scala:177)
at
org.apache.spark.sql.catalyst.trees.TreeNode.transformDownWithPruning(TreeNode.scala:615)
at
org.apache.spark.sql.catalyst.plans.logical.LogicalPlan.org$apache$spark$sql$catalyst$plans$logical$AnalysisHelper$$super$transformDownWithPruning(LogicalPlan.scala:30)
at
org.apache.spark.sql.catalyst.plans.logical.AnalysisHelper.transformDownWithPruning(AnalysisHelper.scala:267)
at
org.apache.spark.sql.catalyst.plans.logical.AnalysisHelper.transformDownWithPruning$(AnalysisHelper.scala:263)
at
org.apache.spark.sql.catalyst.plans.logical.LogicalPlan.transformDownWithPruning(LogicalPlan.scala:30)
at
org.apache.spark.sql.catalyst.plans.logical.LogicalPlan.transformDownWithPruning(LogicalPlan.scala:30)
at
org.apache.spark.sql.catalyst.trees.TreeNode.transformDown(TreeNode.scala:591)
at
org.apache.spark.sql.execution.QueryExecution.eagerlyExecuteCommands(QueryExecution.scala:96)
at
org.apache.spark.sql.execution.QueryExecution.commandExecuted$lzycompute(QueryExecution.scala:83)
at
org.apache.spark.sql.execution.QueryExecution.commandExecuted(QueryExecution.scala:81)
at
org.apache.spark.sql.execution.QueryExecution.assertCommandExecuted(QueryExecution.scala:124)
at
org.apache.spark.sql.DataFrameWriter.runCommand(DataFrameWriter.scala:860)
at
org.apache.spark.sql.DataFrameWriter.saveToV1Source(DataFrameWriter.scala:390)
at
org.apache.spark.sql.DataFrameWriter.saveInternal(DataFrameWriter.scala:363)
at org.apache.spark.sql.DataFrameWriter.save(DataFrameWriter.scala:239)
```
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