deniskuzZ commented on code in PR #6651:
URL: https://github.com/apache/hive/pull/6651#discussion_r3665302494
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standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/handler/BaseHandler.java:
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@@ -271,7 +271,10 @@ private void initDefaultSchema() throws MetaException {
if (tablelocks == null) {
int numTableLocks = MetastoreConf.getIntVar(conf,
MetastoreConf.ConfVars.METASTORE_NUM_STRIPED_TABLE_LOCKS);
- tablelocks = Striped.lock(numTableLocks);
+ // lazyWeakLock: lock objects are allocated on first use and held via
weak references,
+ // so unused stripes are GC'd. A large stripe count keeps hash
collisions between
+ // unrelated (db, tbl) keys without paying permanent memory cost.
+ tablelocks = Striped.lazyWeakLock(numTableLocks);
Review Comment:
cc @dengzhhu653
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