vvysotskyi commented on a change in pull request #1810: DRILL-7271: Refactor
Metadata interfaces and classes to contain all needed information for the File
based Metastore
URL: https://github.com/apache/drill/pull/1810#discussion_r296737602
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/planner/common/DrillStatsTable.java
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@@ -452,53 +456,54 @@ public static ObjectMapper getMapper() {
.addDeserializer(TypeProtos.MajorType.class, new MajorTypeSerDe.De())
.addDeserializer(SchemaPath.class, new SchemaPath.De());
mapper.registerModule(deModule);
+ mapper.registerSubtypes(new NamedType(NumericEquiDepthHistogram.class,
"numeric-equi-depth"));
Review comment:
It would be nice, but I think I can break backward compatibility since it
was defined earlier here:
https://github.com/apache/drill/blob/05a1a3a888a7408bde683acc36f406fbd2459254/exec/java-exec/src/main/java/org/apache/drill/exec/planner/common/Histogram.java#L31
So all previously created stats files wouldn't be deserialized correctly.
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