yunfengzhou-hub commented on PR #4611:
URL: https://github.com/apache/paimon/pull/4611#issuecomment-2510636951
> I am concern about the serialization for watermark spec, can you create
some test for compatibility? (You can create schema file from old Paimon, and
read it in tests)
@JingsongLi `FlinkCatalogPropertiesUtilTest` has recorded the serialization
result as follows
```java
Map<String, String> expected = new HashMap<>();
String watermarkPrefix = compoundKey(SCHEMA, WATERMARK, 0);
expected.put(compoundKey(watermarkPrefix, WATERMARK_ROWTIME), "test_time");
expected.put(
compoundKey(watermarkPrefix, WATERMARK_STRATEGY_EXPR),
"`test_time` - INTERVAL '0.001' SECOND");
expected.put(compoundKey(watermarkPrefix, WATERMARK_STRATEGY_DATA_TYPE),
"TIMESTAMP(3)");
```
This code stands for the serialization result since the older versions of
Paimon. This PR does not change this part of code, which means the
compatibility should be guaranteed.
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