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[MINOR][INFRA] Suppress warning in check-license

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### What changes were proposed in this pull request?
This PR aims to suppress the warning `File exists` in check-license

### Why are the changes needed?

**BEFORE**
```
% dev/check-license
Attempting to fetch rat
RAT checks passed.

% dev/check-license
mkdir: target: File exists
RAT checks passed.
```

**AFTER**
```
% dev/check-license
Attempting to fetch rat
RAT checks passed.

% dev/check-license
RAT checks passed.
```

### Does this PR introduce _any_ user-facing change?
No.

### How was this patch tested?
Manually do dev/check-license twice.

Closes #30460 from williamhyun/checklicense.

Authored-by: William Hyun <williamhyun3@gmail.com>
Signed-off-by: HyukjinKwon <gurwls223@apache.org>
This commit is contained in:
William Hyun 2020-11-23 10:38:40 +09:00 committed by HyukjinKwon
parent df4a1c2256
commit a459238523
1 changed files with 1 additions and 1 deletions
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dev/check-license
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@ -67,7 +67,7 @@ mkdir -p "$FWDIR"/lib
exit 1
}
mkdir target
mkdir -p target
$java_cmd -jar "$rat_jar" -E "$FWDIR"/dev/.rat-excludes -d "$FWDIR" > target/rat-results.txt
if [ $? -ne 0 ]; then