StefanXiepj commented on a change in pull request #2649:
URL: https://github.com/apache/iceberg/pull/2649#discussion_r641532345
##########
File path:
hive-metastore/src/main/java/org/apache/iceberg/hive/CachedClientPool.java
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@@ -65,6 +65,8 @@ private synchronized void init() {
.removalListener((key, value, cause) -> ((HiveClientPool)
value).close())
.build();
}
+ // cleanup cache before jvm exit, avoid some clients may not be closed.
+ Runtime.getRuntime().addShutdownHook(new
Thread(CachedClientPool::cleanupCache));
Review comment:
If a large number of tasks exit, many connections may not be closed. But
as you said, this is not a serious problem.
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