getLastIncrement() can miss some key-values
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Key: HBASE-3396
URL: https://issues.apache.org/jira/browse/HBASE-3396
Project: HBase
Issue Type: Bug
Affects Versions: 0.90.0
Reporter: Prakash Khemani
Assignee: Jonathan Gray
In getLastIncrement() there is an assumption that memstore only scan will never
return multiple versions of a kv
// found everything we were looking for, done
if (results.size() == expected) {
return results;
}
Based on this assumption the code does an early out after it finds the expected
number of key-value pairs in the memstore. But what if there were multiple
versions of the same kv returned by the memstore scan? I think it is possible
when the memstore has a snapshot pending to be written out. A version of the
key can be returned each from the online and from the snapshot memory.
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