sankarh commented on a change in pull request #537: HIVE-19430 :
ObjectStore.cleanNotificationEvents OutOfMemory on large number of pending
events
URL: https://github.com/apache/hive/pull/537#discussion_r257202597
##########
File path:
standalone-metastore/metastore-common/src/main/java/org/apache/hadoop/hive/metastore/conf/MetastoreConf.java
##########
@@ -555,6 +555,9 @@ public static ConfVars getMetaConf(String name) {
EVENT_DB_LISTENER_TTL("metastore.event.db.listener.timetolive",
"hive.metastore.event.db.listener.timetolive", 86400, TimeUnit.SECONDS,
"time after which events will be removed from the database listener
queue"),
+ CLEAN_MAX_EVENTS("metastore.event.db.clean.maxevents",
+ "hive.metastore.event.db.clean.maxevents", 10000,
+ "Limit on number events to be cleaned at a time in metastore
cleanNotificationEvents call, to avoid OOM"),
Review comment:
Also, shall mention that if passed as 0 or negative values, then all expired
events will be cleaned.
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