[ https://issues.apache.org/jira/browse/PHOENIX-6035?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xinyi Yan updated PHOENIX-6035: ------------------------------- Fix Version/s: (was: 4.16.0) 4.17.0 4.16.1 > Extend phoenix.allow.system.catalog.rollback or introduce a new config to > completely rollback changes introduced by Splittable SYSTEM.CATALOG > --------------------------------------------------------------------------------------------------------------------------------------------- > > Key: PHOENIX-6035 > URL: https://issues.apache.org/jira/browse/PHOENIX-6035 > Project: Phoenix > Issue Type: Improvement > Affects Versions: 5.0.0, 4.15.0 > Reporter: Chinmay Kulkarni > Priority: Critical > Fix For: 5.1.0, 4.16.1, 4.17.0 > > > Currently, https://issues.apache.org/jira/browse/PHOENIX-3534 just makes sure > that SYSTEM.CATALOG does not split and continues writing parent column > metadata with view metadata. Clients that want 4.15/4.x features without > needing SYSTEM.CATALOG to be splittable can already just provide > phoenix.system.catalog.splittable=false. We should extend the > phoenix.allow.system.catalog.rollback config so that when it is true, it will > include the following: > * Continue writing parent->child links to SYSTEM.CATALOG instead of using > SYSTEM.CHILD_LINK > * Not use SYSTEM.TASK for dropping child views but directly issue the drop > view commands since SYSTEM.CATALOG is on a single region anyways > * In the upgrade path for 4.16, if this config is on, we will have to > reliably also do the following: > # Move all parent->child links from SYSTEM.CHILD_LINK to SYSTEM.CATALOG > # Clean the SYSTEM.TASK table and execute all unscheduled DropChildViewsTask > tasks > Basically, for a 4.15 client with phoenix.allow.system.catalog.rollback=true, > at the end of their upgrade to 4.16, the SYSTEM.CHILD_LINK table should be > empty and unused henceforth and the SYSTEM.TASK table should not contain any > DropChildViewsTask tasks and should be unused for the purpose of DROP > TABLE/VIEW <parent table/view name> CASCADE DDLs henceforth. -- This message was sent by Atlassian Jira (v8.3.4#803005)