[BUG] Join queries with multiple tables as join right fails with stack overflow error

[LantaoJin]

What is the bug?

search source=table_a
  | INNER JOIN on column1 = column5 table_b, table_b_2
  | fields column1, column2, column3, column5

Failed with stack overflow error.

We can disable it to support two-table join only. But should we support query such as following query?

search source=table_a
  | INNER JOIN on column1 = column5 [search source = table_b, table_b_2 ]
  | fields column1, column2, column3, column5

This query will stackoverflow in Spark internal as well.