sunxiaojian commented on code in PR #9003:
URL: https://github.com/apache/gravitino/pull/9003#discussion_r2485860737
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iceberg/iceberg-common/src/main/java/org/apache/gravitino/iceberg/common/authentication/kerberos/HiveBackendProxy.java:
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@@ -110,11 +112,20 @@ private ClientPool<IMetaStoreClient, TException>
resetIcebergHiveClientPool()
final Field m = HiveCatalog.class.getDeclaredField("clients");
m.setAccessible(true);
- // TODO: we need to close the original client pool and thread pool, or it
will cause memory
- // leak.
- ClientPool<IMetaStoreClient, TException> newClientPool =
+ // Get and close the old client pool before replacing it
Review Comment:
@yuqi1129 When creating a 'cronPoolCache', it uses the custom thread pool
'scheduled ExecutionService' from IcebergHiveCachedClientPool. When calling
`IcebergHiveCachedClientPool.close()', the thread pool will be directly shut
down.
https://github.com/apache/gravitino/blob/35a2dc1183ffd8dcee4b7bc6d99c8fb962720dab/iceberg/iceberg-common/src/main/java/org/apache/gravitino/iceberg/common/utils/IcebergHiveCachedClientPool.java#L143
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