[ https://issues.apache.org/jira/browse/KUDU-3055?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Grant Henke updated KUDU-3055: ------------------------------ Labels: scalability (was: ) > Lazily open cold tablets > ------------------------ > > Key: KUDU-3055 > URL: https://issues.apache.org/jira/browse/KUDU-3055 > Project: Kudu > Issue Type: New Feature > Components: master, tablet, tserver > Reporter: Andrew Wong > Priority: Major > Labels: scalability > > It might be useful in larger deployments to have the ability to lazily > bootstrap cold tablets. > Currently, WAL replay consumes a significant amount of bootstrapping time. If > we know certain tablets are read infrequently, we ought to be able to > indicate that we only want to bootstrap and replay the WALs for tablets that > have been accessed recently. > [This patch|https://github.com/apache/kudu/commit/ca957fb] gave us a metric > for hotness and coldness at the replica level -- we might want to consider > aggregating this on the master to determine what partitions are hot and cold, > and have the master signal to the appropriate tablet servers upon registering > that certain replicas should be bootstrapped. We might also consider > bootstrapping when a client first calls {{OpenTable()}}. -- This message was sent by Atlassian Jira (v8.3.4#803005)