okumin commented on code in PR #5639:
URL: https://github.com/apache/hive/pull/5639#discussion_r1950229849


##########
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/datasource/HikariCPDataSourceProvider.java:
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@@ -55,6 +56,7 @@ public DataSource create(Configuration hdpConfig, int 
maxPoolSize) throws SQLExc
     Properties properties = replacePrefix(
         DataSourceProvider.getPrefixedProperties(hdpConfig, HIKARI));
     long connectionTimeout = hdpConfig.getLong(CONNECTION_TIMEOUT_PROPERTY, 
30000L);
+    long maxLifetime = hdpConfig.getLong(MAX_LIFETIME, 3600000L);

Review Comment:
   @dengzhhu653 @zabetak 
   
   > To me, the default of LEAK_DETECTION_THRESHOLD is too long, we can turn 
down this value, what do you think?
   > Regarding the value of the threshold I agree with @dengzhhu653 that 1h is 
probably too long and it makes sense to lower it. In fact, since it is a debug 
property maybe we should keep it disabled by default (i.e., 0). I don't know 
how easy it is to pick a value that is useful in every use-case of the 
metastore.
   
   It makes sense to lower the threshold.
   I have no strong opinion about 0 vs moderate minutes. I'd keep it to be 
positive based on the report of HIVE-25482, as the parameter is not harmless 
anyway. 0 is also an option as we don't know a specific case where HIVE-25482 
is needed.
   
   The updated revision configures 10 minutes, cleaning up the class leveraging 
`getPrefixedProperties`. 0 seconds vs 10 minutes vs else could be still 
controversial.



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