[ https://issues.apache.org/jira/browse/AMBARI-17818?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gopal V updated AMBARI-17818: ----------------------------- Status: Open (was: Patch Available) > Tez & Hive: Memory management should use scaled down Xmx for sizing buffers > --------------------------------------------------------------------------- > > Key: AMBARI-17818 > URL: https://issues.apache.org/jira/browse/AMBARI-17818 > Project: Ambari > Issue Type: Bug > Components: stacks > Reporter: Gopal V > Assignee: Gopal V > Attachments: AMBARI-17818.1.patch > > > The defaults in Ambari assume 80% of the YARN container size is allocate to > the user heap (Xmx). > On top of this particular restriction, the allocation blocks are divided into > Eden/Survivor/Tenured - a single allocation spanning 40% of the heap might > fail for tez runtime.io.sort.mb. > Scale down the Tez sort size and map join by 0.8x to match Xmx. -- This message was sent by Atlassian JIRA (v6.3.4#6332)