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https://issues.apache.org/jira/browse/HADOOP-8853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16506470#comment-16506470
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Joseph Smith commented on HADOOP-8853:
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Looks like a duplicate to HADOOP-11901
> BytesWritable setsize unchecked
> -------------------------------
>
> Key: HADOOP-8853
> URL: https://issues.apache.org/jira/browse/HADOOP-8853
> Project: Hadoop Common
> Issue Type: Bug
> Components: io
> Affects Versions: 2.0.1-alpha
> Reporter: Sven Meys
> Priority: Major
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> When setting an array of length 1183230720 (in my case), the method will
> return a negative array index exception.
> Cause is the following method.
> public void setSize(int size) {
> if (size > getCapacity()) {
> setCapacity(size * 3 / 2);
> }
> this.size = size;
> }
> size * 3 has precedence which means that for any value greater than
> 715.827.882 (682,6 MB), the result will overflow and become negative. Thus
> this method is unsafe.
> It would be nice to have this hidden feature documented or have a failsafe in
> place.
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