thswlsqls opened a new pull request, #9066: URL: https://github.com/apache/paimon/pull/9066
### Purpose fix #9064 - `AvroSchemaConverter` handles `MULTISET` and `MAP` in one branch, so a non-string element gets the array-of-record encoding. - `AvroSchemaVisitor.visit()` recognized only `MapType` in its `ARRAY` branch and cast everything else to the `final` class `ArrayType`, so any `MULTISET` with a non-string element threw `ClassCastException` on write and read, even though `validateDataFields` passed. ORC and Parquet already accept that schema. - Reuse the converter's `extractKeyTypeToAvroMap`/`extractValueTypeToAvroMap` there, keeping schema creation and visiting on one source. The converter is untouched, so the written encoding is unchanged. - Correct the avro `MAP`/`MULTISET` rows in `fileformat.md`: the `MAP` row says the key must be a string type, but `FormatReadWriteTest`'s `nonStrKeyMap = MAP(INT, ...)` already passes on avro. ### Tests - Added `AvroFormatReadWriteTest#testMultisetWithNonStringElement` (round trip; throws without the fix) and `#testMultisetWithStringElement` (regression guard). - `mvn -pl paimon-format -DfailIfNoTests=false clean install` — 531 tests passed, 0 failures. No existing test used `MULTISET`. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
