ngsg commented on code in PR #5771:
URL: https://github.com/apache/hive/pull/5771#discussion_r2179212901
##########
ql/src/java/org/apache/hadoop/hive/ql/metadata/Hive.java:
##########
@@ -6006,11 +6009,20 @@ public HiveMetaHook getHook(
}
};
+ IMetaStoreClient thriftClient = new ThriftHiveMetaStoreClient(conf,
allowEmbedded);
+ IMetaStoreClient clientWithLocalCache = new
HiveMetaStoreClientWithLocalCache(conf, thriftClient);
+ IMetaStoreClient sessionLevelClient = new SessionHiveMetaStoreClient(conf,
clientWithLocalCache);
+ IMetaStoreClient clientWithHook = new
HookEnabledMetaStoreClientProxy(conf, hookLoader, sessionLevelClient);
Review Comment:
The current implementation has both `temp table -> hook` and `hook -> temp
table` access pattern, and due to the following `hook -> temp table` dependency
in Iceberg hook, we have decided to access `hook` before `session(temp table)`.
https://github.com/apache/hive/blob/be59bd0b445096e431c18bbfa0d682c78ba18b76/iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/HiveIcebergMetaHook.java#L225-L227
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