afilipchik commented on a change in pull request #862: Add support for
composite key
URL: https://github.com/apache/incubator-hudi/pull/862#discussion_r319641781
##########
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:
I think it can be anything.
HoodieKey(String recordKey, String partitionPath)
so I'm just creating a long key: bla.bla1.bla2. Can be bla:bla1:bla2
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