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https://issues.apache.org/jira/browse/HDFS-3488?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin Patrick McCabe updated HDFS-3488:
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Status: Patch Available (was: Open)
> BlockPoolSliceScanner#getNewBlockScanTime does not handle numbers > 31 bits
> properly
> ------------------------------------------------------------------------------------
>
> Key: HDFS-3488
> URL: https://issues.apache.org/jira/browse/HDFS-3488
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Priority: Minor
> Attachments: HDFS-3488.001.patch
>
>
> This code does not handle the case where period > 2**31 properly:
> {code}
> long period = Math.min(scanPeriod,
> Math.max(blockMap.size(),1) * 600 * 1000L);
> int periodInt = Math.abs((int)period);
> return System.currentTimeMillis() - scanPeriod +
> DFSUtil.getRandom().nextInt(periodInt);
> {code}
> So, for example, if period = 0x100000000, we'll map that to 0, and so forth.
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