Chang chen created HBASE-17375:
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Summary: PrefixTreeArrayReversibleScanner#previousRowInternal
doesn't work correctly
Key: HBASE-17375
URL: https://issues.apache.org/jira/browse/HBASE-17375
Project: HBase
Issue Type: Bug
Affects Versions: 0.98.24, 0.98.23, 1.1.7
Reporter: Chang chen
Recently, we find our hbase compaction thread never end. After investigation, I
believe it's the bug of PrefixTreeArrayReversibleScanner#previousRowInternal.
{code}
private boolean previousRowInternal() {
//...
while (!beforeFirst) {
//....
// what if currentRowNode is nub?
if (currentRowNode.hasOccurrences()) {// escape clause
currentRowNode.resetFanIndex();
return true;// found some values
}
}
{code}
Assume we have following cells:
{quote}
<A,a> 1
<A,v> 1
<Aaeeee,a> 1
<Aaeeee,v> 1
<Abc,a> 1
<Abc,v> 1
<Abde,a> 1
<Abde,v> 1
{quote}
If the current row is {color:red}Abc{color}, then the preivous row should be
*Aaeeee*,. However previousRowInternal return {color:red}A{color}
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