[GitHub] [iceberg] pvary commented on a diff in pull request #7310: Hive: Clean up expired metastore clients

["pvary (via GitHub)" <gi...@apache.org>]

pvary commented on code in PR #7310:
URL: https://github.com/apache/iceberg/pull/7310#discussion_r1169469620


##########
hive-metastore/src/main/java/org/apache/iceberg/hive/CachedClientPool.java:
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@@ -97,10 +99,15 @@ HiveClientPool clientPool() {
 
   private synchronized void init() {
     if (clientPoolCache == null) {
+      // Since Caffeine does not ensure that removalListener will be involved after expiration
+      // We use a scheduler with 2 threads to clean up expired clients.

Review Comment:
   Why this is size 2? Why not 1?



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