sort-merge-fdlimit.log ( failed)

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

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