Zhou wenjian created HBASE-7337:
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Summary: SingleColumnValueFilter seems to get unavailble data
Key: HBASE-7337
URL: https://issues.apache.org/jira/browse/HBASE-7337
Project: HBase
Issue Type: Bug
Components: Filters
Affects Versions: 0.94.3, 0.96.0
Environment: 0.94
Reporter: Zhou wenjian
Assignee: Zhou wenjian
Fix For: 0.96.0, 0.94.4
put multi versions of a row.
r1 cf:q version:1 value:1
r1 cf:q version:2 value:3
r1 cf:q version:3 value:2
the filter in scan is set as below:
SingleColumnValueFilter valueF = new SingleColumnValueFilter(
family,qualifier,CompareOp.EQUAL,new BinaryComparator(Bytes
.toBytes("2")));
then i found all of the three versions will be emmitted, then i set
latestVersionOnly to false, the result does no change.
public ReturnCode filterKeyValue(KeyValue keyValue) {
// System.out.println("REMOVE KEY=" + keyValue.toString() + ", value=" +
Bytes.toString(keyValue.getValue()));
if (this.matchedColumn) {
// We already found and matched the single column, all keys now pass
return ReturnCode.INCLUDE;
} else if (this.latestVersionOnly && this.foundColumn) {
// We found but did not match the single column, skip to next row
return ReturnCode.NEXT_ROW;
}
if (!keyValue.matchingColumn(this.columnFamily, this.columnQualifier)) {
return ReturnCode.INCLUDE;
}
foundColumn = true;
if (filterColumnValue(keyValue.getBuffer(),
keyValue.getValueOffset(), keyValue.getValueLength())) {
return this.latestVersionOnly? ReturnCode.NEXT_ROW: ReturnCode.INCLUDE;
}
this.matchedColumn = true;
return ReturnCode.INCLUDE;
}
>From the code above, it seeems that version 3 will be first emmited, and set
>matchedColumn to false, which leads the following version 2 and 1 emmited too.
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