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https://issues.apache.org/jira/browse/HBASE-7337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13532066#comment-13532066
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Zhou wenjian commented on HBASE-7337:
-------------------------------------
[~anoopsamjohn]
actually i did get all the versions.
when using SCVF, it is not allowed to set version in the scan for it will get
data againset SCVF,do you mean it?
> 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 true, which leads the following version 2 and 1 emmited too.
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