[ https://issues.apache.org/jira/browse/KUDU-3180?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
YifanZhang reassigned KUDU-3180: -------------------------------- Assignee: YifanZhang > kudu don't always prefer to flush MRS/DMS that anchor more memory > ----------------------------------------------------------------- > > Key: KUDU-3180 > URL: https://issues.apache.org/jira/browse/KUDU-3180 > Project: Kudu > Issue Type: Improvement > Reporter: YifanZhang > Assignee: YifanZhang > Priority: Major > Attachments: image-2020-08-04-20-26-53-749.png, > image-2020-08-04-20-28-00-665.png > > > Current time-based flush policy always give a flush op a high score if we > haven't flushed for the tablet in a long time, that may lead to starvation of > ops that could free more memory. > We set -flush_threshold_mb=32, -flush_threshold_secs=1800 in a cluster, and > find that some small MRS/DMS flushes has a higher perf score than big MRS/DMS > flushes and compactions, which seems not so reasonable. > !image-2020-08-04-20-26-53-749.png|width=1424,height=317!!image-2020-08-04-20-28-00-665.png|width=1414,height=327! -- This message was sent by Atlassian Jira (v8.3.4#803005)