afilipchik commented on a change in pull request #862: Add support for
composite key
URL: https://github.com/apache/incubator-hudi/pull/862#discussion_r327735139
##########
File path:
hudi-utilities/src/main/java/org/apache/hudi/utilities/keygen/TimestampBasedKeyGenerator.java
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@@ -102,7 +109,12 @@ public HoodieKey getKey(GenericRecord record) {
"Unexpected type for partition field: " +
partitionVal.getClass().getName());
}
- return new HoodieKey(DataSourceUtils.getNestedFieldValAsString(record,
recordKeyField),
+ return new HoodieKey(
+ fields.stream()
+ .map(
+ recordKeyField ->
+ DataSourceUtils.getNestedFieldValAsString(record,
recordKeyField))
+ .collect(Collectors.joining(".")),
Review comment:
Hey, not sure I understood the edge case example. Here is how we are using
it:
We have an object with id and a version. Version suppose to monotonically
increase, and we want to be able to dedub based on key and the version (there
should be at most 1 object with the same id and version).
Our config looks like:
hoodie.datasource.write.recordkey.field=object.id,object.version for insert
table and
What can go wrong with this one?
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