Colin Patrick McCabe created HDFS-3488:
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Summary: 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
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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