voonhous opened a new pull request, #10247:
URL: https://github.com/apache/hudi/pull/10247
…and decimal types
### Change Logs
Hudi-on-Flink reads currently fails when reading parquet files after these
two COMPREHENSIVE schema evolution involving DECIMAL types are applied:
1. **Adding** a DECIMAL field into a struct
2. **Reordering** a DECIMAL field in a struct
This PR aims to address the above Hudi-on-Flink read issues.
**Error log for adding a decimal field into a struct**
```log
ClassCastException:
org.apache.hudi.table.format.cow.vector.ParquetDecimalVector cannot be cast to
org.apache.flink.table.data.columnar.vector.writable.WritableColumnVector
at
org.apache.hudi.table.format.cow.ParquetSplitReaderUtil.createWritableColumnVector(ParquetSplitReaderUtil.java:547)
at
org.apache.hudi.table.format.cow.ParquetSplitReaderUtil.createWritableColumnVector(ParquetSplitReaderUtil.java:441)
at
org.apache.hudi.table.format.cow.vector.reader.ParquetColumnarRowSplitReader.createWritableVectors(ParquetColumnarRowSplitReader.java:216)
at
org.apache.hudi.table.format.cow.vector.reader.ParquetColumnarRowSplitReader.<init>(ParquetColumnarRowSplitReader.java:156)
at
org.apache.hudi.table.format.cow.ParquetSplitReaderUtil.genPartColumnarRowReader(ParquetSplitReaderUtil.java:149)
at
org.apache.hudi.table.format.RecordIterators.getParquetRecordIterator(RecordIterators.java:72)
at
org.apache.hudi.table.format.mor.MergeOnReadInputFormat.getBaseFileIterator(MergeOnReadInputFormat.java:362)
at
org.apache.hudi.table.format.mor.MergeOnReadInputFormat.getBaseFileIterator(MergeOnReadInputFormat.java:337)
at
org.apache.hudi.table.format.mor.MergeOnReadInputFormat.open(MergeOnReadInputFormat.java:201)
at
org.apache.hudi.source.StreamReadOperator.processSplits(StreamReadOperator.java:202)
at
org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$1.runThrowing(StreamTaskActionExecutor.java:50)
at
org.apache.flink.streaming.runtime.tasks.mailbox.Mail.run(Mail.java:90)
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.processMailsNonBlocking(MailboxProcessor.java:353)
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.processMail(MailboxProcessor.java:317)
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:201)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:822)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:771)
at
org.apache.flink.runtime.taskmanager.Task.runWithSystemExitMonitoring(Task.java:958)
at
org.apache.flink.runtime.taskmanager.Task.restoreAndInvoke(Task.java:937)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:751)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:569)
at java.lang.Thread.run(Thread.java:748)
```
**Error log for adding a decimal field into a struct**
```log
ClassCastException:
org.apache.flink.table.data.columnar.vector.heap.HeapBytesVector cannot be cast
to org.apache.flink.table.data.columnar.vector.DecimalColumnVector
at
org.apache.flink.table.data.columnar.vector.VectorizedColumnBatch.getDecimal(VectorizedColumnBatch.java:118)
at
org.apache.flink.table.data.columnar.ColumnarRowData.getDecimal(ColumnarRowData.java:128)
at
org.apache.flink.table.data.RowData.lambda$createFieldGetter$89bd9445$1(RowData.java:233)
at
org.apache.flink.table.data.RowData.lambda$createFieldGetter$25774257$1(RowData.java:296)
at
org.apache.flink.table.runtime.typeutils.RowDataSerializer.copyRowData(RowDataSerializer.java:170)
at
org.apache.flink.table.runtime.typeutils.RowDataSerializer.copy(RowDataSerializer.java:131)
at
org.apache.flink.table.runtime.typeutils.RowDataSerializer.copy(RowDataSerializer.java:48)
at
org.apache.flink.table.runtime.typeutils.RowDataSerializer.copyRowData(RowDataSerializer.java:170)
at
org.apache.flink.table.runtime.typeutils.RowDataSerializer.copy(RowDataSerializer.java:131)
at
org.apache.flink.table.runtime.typeutils.RowDataSerializer.copy(RowDataSerializer.java:48)
at
org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.pushToOperator(CopyingChainingOutput.java:80)
at
org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.collect(CopyingChainingOutput.java:57)
at
org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.collect(CopyingChainingOutput.java:29)
at
org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:56)
at
org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:29)
at
org.apache.flink.streaming.api.operators.StreamSourceContexts$ManualWatermarkContext.processAndCollect(StreamSourceContexts.java:474)
at
org.apache.flink.streaming.api.operators.StreamSourceContexts$WatermarkContext.collect(StreamSourceContexts.java:572)
at
org.apache.flink.streaming.api.operators.StreamSourceContexts$SwitchingOnClose.collect(StreamSourceContexts.java:144)
at
org.apache.hudi.source.StreamReadOperator.consumeAsMiniBatch(StreamReadOperator.java:228)
at
org.apache.hudi.source.StreamReadOperator.processSplits(StreamReadOperator.java:207)
at
org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$1.runThrowing(StreamTaskActionExecutor.java:50)
at
org.apache.flink.streaming.runtime.tasks.mailbox.Mail.run(Mail.java:90)
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.processMailsNonBlocking(MailboxProcessor.java:353)
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.processMail(MailboxProcessor.java:317)
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:201)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:822)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:771)
at
org.apache.flink.runtime.taskmanager.Task.runWithSystemExitMonitoring(Task.java:958)
at
org.apache.flink.runtime.taskmanager.Task.restoreAndInvoke(Task.java:937)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:751)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:569)
at java.lang.Thread.run(Thread.java:748)
```
### Impact
None
### Risk level (write none, low medium or high below)
None
### Documentation Update
_Describe any necessary documentation update if there is any new feature,
config, or user-facing change_
- _The config description must be updated if new configs are added or the
default value of the configs are changed_
- _Any new feature or user-facing change requires updating the Hudi website.
Please create a Jira ticket, attach the
ticket number here and follow the
[instruction](https://hudi.apache.org/contribute/developer-setup#website) to
make
changes to the website._
### Contributor's checklist
- [X] Read through [contributor's
guide](https://hudi.apache.org/contribute/how-to-contribute)
- [ ] Change Logs and Impact were stated clearly
- [ ] Adequate tests were added if applicable
- [ ] CI passed
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