Creating lots of distributed tables concurrently results in deadlock

One of our users does the following transaction concurrently for many tables and sees deadlocks:

```
BEGIN;
i) Creates a table and distributes it and create index.
ii) INSERT INTO local table (metadata)
iii) CREATE a coordinator table.
iv) set permissions on distributed table.
END;
```

I looked at the code for few hours, but don't have much clues yet.