pkuwm commented on a change in pull request #955: Fix MSD routing data
refreshing for update methods
URL: https://github.com/apache/helix/pull/955#discussion_r410078265
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File path:
helix-rest/src/main/java/org/apache/helix/rest/metadatastore/ZkMetadataStoreDirectory.java
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@@ -304,42 +314,35 @@ public boolean deleteShardingKey(String namespace,
String realm, String sharding
*/
@Override
public void refreshRoutingData(String namespace) {
- // Safe to ignore the callback if any of the maps are null.
- // If routingDataMap is null, then it will be populated by the constructor
anyway
- // If routingDataMap is not null, then it's safe for the callback function
to update it
- if (_routingZkAddressMap == null || _realmToShardingKeysMap == null
- || _routingDataReaderMap == null || _routingDataWriterMap == null) {
- LOG.warn(
- "refreshRoutingData callback called before ZKMetadataStoreDirectory
was fully initialized. Skipping refresh!");
Review comment:
@NealSun96 Thanks for the explanation.
After I check the code carefully, I don't see what you said is the case.
`ZkRoutingDataReader` is initialized after the maps are created. So I think
this check is safe to remove.
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