henrib commented on code in PR #5882:
URL: https://github.com/apache/hive/pull/5882#discussion_r2265976587
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standalone-metastore/metastore-rest-catalog/src/main/java/org/apache/iceberg/rest/HMSCachingCatalog.java:
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@@ -63,6 +69,48 @@ public List<Namespace> listNamespaces(Namespace nmspc)
throws NoSuchNamespaceExc
return hiveCatalog.listNamespaces(nmspc);
}
+ @Override
+ public Table loadTable(TableIdentifier identifier) {
+ final Cache<TableIdentifier, Table> cache = this.tableCache;
+ final HiveCatalog catalog = this.hiveCatalog;
+ final TableIdentifier canonicalized = identifier.toLowerCase();
+ Table cachedTable = cache.getIfPresent(canonicalized);
+ if (cachedTable != null) {
+ String location = catalog.getTableLocation(canonicalized);
Review Comment:
To ensure the cached table is not stale, we check against the stored
reference that the location it points to is still current. This situation
(staleness) can occur if users are updating the table from HMS/Hive
concurrently with through Catalog and/or HA. @okumin do you concur ?
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