sort-merge-fdlimit.log ( failed)

test link: tests/sort/sort-merge-fdlimit.sh
FAIL: tests/sort/sort-merge-fdlimit
===================================

12
5
13
11
1
10
9
6
14
7
16
2
3
17
15
4
8
sort: failed to open temporary file: Too many open files
FAIL tests/sort/sort-merge-fdlimit.sh (exit status: 1)