narendly commented on a change in pull request #788: Implement request
forwarding for ZkRoutingDataWriter
URL: https://github.com/apache/helix/pull/788#discussion_r384313523
##########
File path:
helix-rest/src/main/java/org/apache/helix/rest/metadatastore/accessor/ZkRoutingDataWriter.java
##########
@@ -146,31 +144,14 @@ public synchronized boolean deleteShardingKey(String
realm, String shardingKey)
if (_zkClient.isClosed()) {
throw new IllegalStateException("ZkClient is closed!");
}
- ZNRecord znRecord =
- _zkClient.readData(MetadataStoreRoutingConstants.ROUTING_DATA_PATH +
"/" + realm, true);
- if (znRecord == null || !znRecord
- .getListField(MetadataStoreRoutingConstants.ZNRECORD_LIST_FIELD_KEY)
- .contains(shardingKey)) {
- // This realm does not exist or shardingKey doesn't exist. Return true!
- return true;
- }
-
znRecord.getListField(MetadataStoreRoutingConstants.ZNRECORD_LIST_FIELD_KEY)
- .remove(shardingKey);
- // Overwrite this ZNRecord with the sharding key removed
- try {
- _zkClient
- .writeData(MetadataStoreRoutingConstants.ROUTING_DATA_PATH + "/" +
realm, znRecord);
- } catch (Exception e) {
- LOG.error(
- "Failed to write the data back in deleteShardingKey()! Namespace:
{}, Realm: {}, ShardingKey: {}",
- _namespace, realm, shardingKey, e);
- return false;
- }
- return true;
+ return deleteZkShardingKey(realm, shardingKey);
}
- // TODO: Forward the request to leader
- return true;
+ String url_suffix =
+ "namespaces/" + _namespace + "/metadata-store-realms/" + realm +
"/sharding-keys/"
+ + shardingKey;
+ return forwardRequestToLeader(url_suffix, "delete", "deleteShardingKey",
+ Response.Status.OK.getStatusCode());
Review comment:
String literals.
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