[ https://issues.apache.org/jira/browse/SPARK-20883?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Shixiong Zhu resolved SPARK-20883. ---------------------------------- Resolution: Fixed Fix Version/s: 2.3.0 > Improve StateStore APIs for efficiency > -------------------------------------- > > Key: SPARK-20883 > URL: https://issues.apache.org/jira/browse/SPARK-20883 > Project: Spark > Issue Type: Improvement > Components: Structured Streaming > Affects Versions: 2.2.0 > Reporter: Tathagata Das > Assignee: Tathagata Das > Fix For: 2.3.0 > > > Current state store API has a bunch of problems that causes too many > transient objects causing memory pressure. > - StateStore.get() returns Options which forces creation of Some/None objects > for every get > - StateStore.iterator() returns tuples which forces creation of new tuple for > each record returned > - StateStore.updates() requires the implementation to keep track of updates, > while this is used minimally (only by Append mode in streaming aggregations). > This can be totally removed. -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org