[ https://issues.apache.org/jira/browse/PHOENIX-6125?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Viraj Jasani updated PHOENIX-6125: ---------------------------------- Release Note: we have new split policy introduced for SYSTEM.TASK which for now is just extending DisabledRegionSplitPolicy. As part of an upgrade to 4.16/5.1, updating split policy will be taken care of unless it was already updated manually. Hence, before 4.16/5.1 upgrade, if operator has already manually updated split policy of SYSTEM.TASK, an exception will be thrown during upgrade to 4.16 which would mandate an operator intervention to perform: 1. Merging SYSTEM.TASK regions into one single region (if multiple regions were already available before 4.16/5.1 upgrade) 2. Remove split policy of the table manually. > Make sure SYSTEM.TASK does not split > ------------------------------------ > > Key: PHOENIX-6125 > URL: https://issues.apache.org/jira/browse/PHOENIX-6125 > Project: Phoenix > Issue Type: Improvement > Affects Versions: 5.0.0, 4.15.0 > Reporter: Chinmay Kulkarni > Assignee: Viraj Jasani > Priority: Major > Fix For: 5.1.0, 4.16.0 > > Attachments: PHOENIX-6125.4.x.000.patch > > > To avoid problems such as > [PHOENIX-5945|https://issues.apache.org/jira/browse/PHOENIX-5945] we can just > prevent SYSTEM.TASK from splitting. > Currently we only store relatively rare tasks inside SYSTEM.TASK and so we > should probably be safe to assume that it only spans a single region. Note > that we will also have to handle changing the split policy during the upgrade > path for 4.15 operators. -- This message was sent by Atlassian Jira (v8.3.4#803005)