[ https://issues.apache.org/jira/browse/KUDU-2855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Todd Lipcon resolved KUDU-2855. ------------------------------- Resolution: Fixed Fix Version/s: 1.11.0 > Lazy-create DeltaMemStores on first update > ------------------------------------------ > > Key: KUDU-2855 > URL: https://issues.apache.org/jira/browse/KUDU-2855 > Project: Kudu > Issue Type: Improvement > Components: perf, tserver > Reporter: Todd Lipcon > Assignee: HeLifu > Priority: Major > Fix For: 1.11.0 > > > Currently DeltaTracker::DoOpen creates a DeltaMemStore for each DRS. If we > assume that most DRS don't have any deltas, this ends up wasting quite a bit > of memory. Looking at one TS in a production cluster, about 1GB of the ~14G > heap is being used by DMS. Of that, 464MB is data and the remainder is > overhead. > This would likely improve other code paths too to fast-path out any > DMS-related code. -- This message was sent by Atlassian JIRA (v7.6.14#76016)