[ https://issues.apache.org/jira/browse/SPARK-23129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
zhoukang updated SPARK-23129: ----------------------------- Summary: Lazy init DiskMapIterator#deserializeStream to reduce memory usage when ExternalAppendOnlyMap spill too many times (was: Lazy init DiskMapIterator#deserializeStream to reduce memory usage when ExternalAppendOnlyMap spill too much times) > Lazy init DiskMapIterator#deserializeStream to reduce memory usage when > ExternalAppendOnlyMap spill too many times > ------------------------------------------------------------------------------------------------------------------- > > Key: SPARK-23129 > URL: https://issues.apache.org/jira/browse/SPARK-23129 > Project: Spark > Issue Type: Improvement > Components: Spark Core > Affects Versions: 2.1.0 > Reporter: zhoukang > Assignee: zhoukang > Priority: Major > Fix For: 2.3.0 > > > Currently,the deserializeStream in ExternalAppendOnlyMap#DiskMapIterator init > when DiskMapIterator instance created.This will cause memory use overhead > when ExternalAppendOnlyMap spill too much times. > We can avoid this by making deserializeStream init when it is used the first > time. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org