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check the buffer size #453

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check the buffer size #453

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2 changes: 2 additions & 0 deletions ...lient/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/fs/TestDFSIO.java
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Original file line number Diff line number Diff line change
Expand Up @@ -550,6 +550,8 @@ public Long doIO(Reporter reporter,
InputStream in = (InputStream)this.stream;
long actualSize = 0;
while (actualSize < totalSize) {
if(bufferSize <= 0)
throw new IllegalArgumentException("buffer size should be positive integer.");
int curSize = in.read(buffer, 0, bufferSize);
if(curSize < 0) break;
actualSize += curSize;
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