danny0405 opened a new pull request, #7874:
URL: https://github.com/apache/hudi/pull/7874
### Change Logs
In HoodieMergeHandle, there is such a code snippet:
```java
protected void writeIncomingRecords() throws IOException {
// write out any pending records (this can happen when inserts are
turned into updates)
Iterator<HoodieRecord<T>> newRecordsItr = (keyToNewRecords instanceof
ExternalSpillableMap)
? ((ExternalSpillableMap)keyToNewRecords).iterator() :
keyToNewRecords.values().iterator();
while (newRecordsItr.hasNext()) {
HoodieRecord<T> hoodieRecord = newRecordsItr.next();
if (!writtenRecordKeys.contains(hoodieRecord.getRecordKey())) {
writeInsertRecord(hoodieRecord);
}
}
}
```
, after
https://github.com/apache/hudi/commit/f8028a400ebe7a64d7745fae90e769306a8a07a7,
the map is changes to be as immutabe, thus `keyToNewRecords.values()` is
invoked and throws error!
### Impact
FIx the compaction code path
### Risk level (write none, low medium or high below)
low
### 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
- [ ] 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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