Stamatis Zampetakis created HIVE-29046:
------------------------------------------
Summary: Avoid unecessary perf overhead from handling deprecated
properties in MetastoreConf
Key: HIVE-29046
URL: https://issues.apache.org/jira/browse/HIVE-29046
Project: Hive
Issue Type: Improvement
Components: Standalone Metastore
Reporter: Stamatis Zampetakis
Assignee: Stamatis Zampetakis
Currently, on every creation of a new MetastoreConf instance we are [looping
through ~400
ConfVars|https://github.com/apache/hive/blob/90b48ff2fe68e14ebdd02ca718814114384f99e5/standalone-metastore/metastore-common/src/main/java/org/apache/hadoop/hive/metastore/conf/MetastoreConf.java#L2249]
enumeration entries to detect and register deprecated properties.
The deprecated properties are static and known at compile time so there is no
reason to search and register them on every creation of a new Configuration
instance. The current logic is resource wasteful and unnecessary. In addition,
the presence of deprecation information inside the ConfVars enumeration leads
to boilerplate code that is not really necessary.
The deprecation logic can be moved in a static block and the all the code for
the bookeeping deprecated properties in ConfVars can be dropped.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
