Yu Li created HBASE-15324:
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Summary: Jitter may cause desiredMaxFileSize overflow in
ConstantSizeRegionSplitPolicy and trigger unexpected split
Key: HBASE-15324
URL: https://issues.apache.org/jira/browse/HBASE-15324
Project: HBase
Issue Type: Bug
Affects Versions: 1.1.3, 2.0.0
Reporter: Yu Li
Assignee: Yu Li
We introduce jitter for region split decision in HBASE-13412, but the following
line in {{ConstantSizeRegionSplitPolicy}} may cause long value overflow if
MAX_FILESIZE is specified to Long.MAX_VALUE:
{code}
this.desiredMaxFileSize += (long)(desiredMaxFileSize * (RANDOM.nextFloat() -
0.5D) * jitter);
{code}
In our case we specify MAX_FILESIZE to Long.MAX_VALUE to prevent target region
to split.
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