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https://issues.apache.org/jira/browse/ACCUMULO-740?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Keith Turner resolved ACCUMULO-740.
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Resolution: Fixed
Assignee: Keith Turner
I looked at 1.4, this bug will not occur there. I do not think it will ever
call the function w/ a zero length array. Code changes for 1.5 introduced the
possibility of calling the function with a zero length array.
I do not think this bug fix needs to be back ported to 1.4
> Infinite loop in RFile code
> ---------------------------
>
> Key: ACCUMULO-740
> URL: https://issues.apache.org/jira/browse/ACCUMULO-740
> Project: Accumulo
> Issue Type: Bug
> Reporter: Keith Turner
> Assignee: Keith Turner
> Fix For: 1.5.0
>
>
> Saw an infinite loop in RFile code when new on demand indexing was turned on
> and table contained zero length values. I think this is only an issue in
> trunk, but need to analyze 1.4 code to make sure it does not happen.
> The problematic code is
> {noformat}
> org.apache.accumulo.core.file.rfile.RelativeKey.read(DataInput in,
> MByteSequence mbseq, int len){...}
> {noformat}
> When the input mbseq is backed by a zero length array, an infinite loop will
> occur. Also noticed that the code could overflow the integer and cause an
> inifinite loop (a key or value > 2^30 would be needed to trigger this). I
> suspect 1.4 will never generate an input that will cause the infinite loop,
> but I am not 100% sure about this.
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