<issue_start><issue_comment>Title: An option `distributed-sequence` of `default_index_type` seems not work properly.
username_0: +-----------------+---+---+---+
|__index_level_0__|  a|  b|  c|
+-----------------+---+---+---+
|                0|  1|  2|  3|
|                2|  1|  1|  2|
|                4|  2|  6|  1|
|                7|  3| 10|  4|
|                3|  1|  4|  5|
|                6|  2|  8|  6|
|                5|  2|  9|  2|
|                8|  3|  7|  3|
|                9|  3|  5|  6|
|                1|  1|  3|  5|
+-----------------+---+---+---+
```

i expected that the default index has ascending order like below, but it's not.

```
+-----------------+---+---+---+
|__index_level_0__|  a|  b|  c|
+-----------------+---+---+---+
|                0|  1|  2|  3|
|                1|  1|  3|  5|
|                2|  1|  1|  2|
|                3|  1|  4|  5|
|                4|  2|  6|  1|
|                5|  2|  9|  2|
|                6|  2|  8|  6|
|                7|  3| 10|  4|
|                8|  3|  7|  3|
|                9|  3|  5|  6|
+-----------------+---+---+---+
```

is it a bug? or is this the correct behavior?
<issue_comment>username_0: i have had some misunderstood, close<issue_closed>