[ https://issues.apache.org/jira/browse/HIVE-20699?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Eugene Koifman reassigned HIVE-20699: ------------------------------------- Assignee: Vaibhav Gumashta (was: Eugene Koifman) > Query based compactor for full CRUD Acid tables > ----------------------------------------------- > > Key: HIVE-20699 > URL: https://issues.apache.org/jira/browse/HIVE-20699 > Project: Hive > Issue Type: New Feature > Components: Transactions > Affects Versions: 3.1.0 > Reporter: Eugene Koifman > Assignee: Vaibhav Gumashta > Priority: Major > > Currently the Acid compactor is implemented as generated MR job > ({{CompactorMR.java}}). > It could also be expressed as a Hive query that reads from a given partition > and writes data back to the same partition. This will merge the deltas and > 'apply' the delete events. The simplest would be to just use Insert > Overwrite but that will change all ROW__IDs which we don't want. > Need to implement this in a way that preserves ROW__IDs and creates a new > {{base_x}} directory to handle Major compaction. > Minor compaction will be investigated separately. -- This message was sent by Atlassian JIRA (v7.6.3#76005)