[jira] [Created] (FLINK-6765) PojoSerializer returns wrong ConvertDeserializer when migration is required

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-6765:
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             Summary: PojoSerializer returns wrong ConvertDeserializer when migration is required
                 Key: FLINK-6765
                 URL: https://issues.apache.org/jira/browse/FLINK-6765
             Project: Flink
          Issue Type: Bug
          Components: Type Serialization System
    Affects Versions: 1.3.0, 1.4.0
            Reporter: Till Rohrmann


The {{PojoSerializer}} returns the wrong the ConvertDeserializer when migration is required. The reason is the following line in PojoSerializer.java:698:

{code}
if (compatResult.getConvertDeserializer() != null) {
        rebuiltCache.put(previousCachedEntry.getKey(), cachedSerializer);
} else {
        return CompatibilityResult.requiresMigration();
}
{code}

which should be imo

{code}
if (compatResult.getConvertDeserializer() != null) {
        rebuiltCache.put(previousCachedEntry.getKey(), compatResult.getConvertDeserializer());
} else {
        return CompatibilityResult.requiresMigration();
}
{code}



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