narendly commented on a change in pull request #933: Fix MetadataStoreDirectory
routing data cache refresh bug
URL: https://github.com/apache/helix/pull/933#discussion_r405089840
##########
File path:
metadata-store-directory-common/src/main/java/org/apache/helix/msdcommon/datamodel/TrieRoutingData.java
##########
@@ -48,6 +48,10 @@ public TrieRoutingData(Map<String, List<String>>
routingData)
throw new InvalidRoutingDataException("routingData cannot be null or
empty");
}
+ if (!containsShardingKey(routingData)) {
+ throw new InvalidRoutingDataException("routingData needs at least 1
sharding key");
+ }
Review comment:
Okay. Is this clear in our documentation, both in code and user manual? We
need to document this behavior so it's crystal clear to anyone that looks at
this code.
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