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https://issues.apache.org/jira/browse/HBASE-1807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12749980#action_12749980
]
Andrew Purtell commented on HBASE-1807:
---------------------------------------
One minor optimization:
{code}
public ReturnCode filterKeyValue(KeyValue v) {
- if (doCompare(rowCompareOp, rowComparator, v.getBuffer(),
- v.getKeyOffset(), v.getKeyLength())) {
- return ReturnCode.NEXT_ROW;
}
ReturnCode rc = ReturnCode.INCLUDE;
if (doCompare(familyCompareOp, familyComparator, v.getBuffer(),
v.getFamilyOffset(), v.getFamilyLength())) {
rc = ReturnCode.SKIP;
}
if (rc == ReturnCode.INCLUDE) {
if (v.getQualifierLength() > 0) {
if (doCompare(qualifierCompareOp, qualifierComparator, v.getBuffer(),
v.getQualifierOffset(), v.getQualifierLength())) {
rc = ReturnCode.SKIP;
}
}
}
return rc;
}
{code}
since I just realized that filterKeyValue is only called if filterRowKey passes.
> KeyFilter for filtering based on comparsions of row, column, and qualifiers
> of KeyValues
> ----------------------------------------------------------------------------------------
>
> Key: HBASE-1807
> URL: https://issues.apache.org/jira/browse/HBASE-1807
> Project: Hadoop HBase
> Issue Type: New Feature
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
> Priority: Minor
> Fix For: 0.20.0
>
> Attachments: HBASE-1807.patch
>
>
> From: Angus He up on hbase-user:
> {quote}
> Subject: Is there any ways to retrieve values whose columns match specific
> regular expression?
> Is this functionality available in the current implementation? If not, is
> there any plans on this?
> {quote}
> See attached patch. Low impact change, can go into 0.20.0.
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