I tracked the issue down to modifying the same column twice.
pt-online-schema-change --execute --alter "CHANGE thumbnail thumbnail BLOB, CHANGE thumbnail thumbnail varchar(255) CHARACTER SET utf8" D=app_live,t=avatars
will throw an error about the column missing.
I am not going to file a new bug.
I tracked the issue down to modifying the same column twice.
pt-online- schema- change --execute --alter "CHANGE thumbnail thumbnail BLOB, CHANGE thumbnail thumbnail varchar(255) CHARACTER SET utf8" D=app_live, t=avatars
will throw an error about the column missing.
I am not going to file a new bug.