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James Taylor edited comment on PHOENIX-4694 at 4/19/18 10:10 PM: ----------------------------------------------------------------- The lock on the parent during creation of a view is need to prevent a race condition between creating a view and adding/dropping a column from a base table. This will no longer be required after PHOENIX-3534. For now, we can reduce contention by not locking the parent during drop as that's not required. Please review, [~vincentpoon]. was (Author: jamestaylor): The lock on the parent during creation of a view is need to prevent a race condition between creating a view and adding/dropping a column from a base table. This will no longer be required after PHOENIX-3534. For now, we can reduce contention by not locking the parent during drop as that's not required. > Prevent locking of parent table when dropping view to reduce contention > ----------------------------------------------------------------------- > > Key: PHOENIX-4694 > URL: https://issues.apache.org/jira/browse/PHOENIX-4694 > Project: Phoenix > Issue Type: Bug > Reporter: James Taylor > Priority: Major > Fix For: 4.14.0, 5.0.0 > > Attachments: PHOENIX-4694.patch > > > When there are many views with the same parent table, there's a lot of > contention when adding new views and dropping existing views. The lock is > only necessary when creating/dropping indexes, so should be removed in the > case of views. -- This message was sent by Atlassian JIRA (v7.6.3#76005)