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Shrijeet Paliwal commented on HBASE-6468: ----------------------------------------- {quote} FirstKeyValueMatchingQualifiersFilter -> When a CF contains qualifier a,b,c and the qualifiers provided are b and c, what will happen to the KVs for qualifier 'a' ? Will this be included in the Result? Is this expected? {quote} Depends on whether or not first KV matching any of the columns associated with filter have been seen yet or not. {quote} Can the qualifiers be accommodated in FirstKeyOnlyFilter only? Do we need a new Filter? Just a though from my side. By default FirstKeyOnlyFilter allow only the 1st KV (from all the qualifiers) from a CF to come in the Result and will filter out other KVs. Specifying a set of qualifiers to FirstKeyOnlyFilter will restrict the selection of the 1st KV from a any of these qualifiers only. It will filter out all KVs from other qualifiers. {quote} FKVMatchingQualifiersFilter has a peculiar behavior hence (extending it from FirstKeyOnlyFilter and) creating a new filter made sense. > RowCounter may return incorrect result if column name is specified in command > line > ---------------------------------------------------------------------------------- > > Key: HBASE-6468 > URL: https://issues.apache.org/jira/browse/HBASE-6468 > Project: HBase > Issue Type: Bug > Affects Versions: 0.90.5 > Reporter: Shrijeet Paliwal > Attachments: > 0001-HBASE-6468-RowCounter-may-return-incorrect-result.patch, > 0002-HBASE-6468-RowCounter-may-return-incorrect-result.patch > > > The RowCounter use FirstKeyOnlyFilter regardless of whether or not the > command line argument specified a column family (or family:qualifier). > In case when no qualifier was specified as argument, the scan will > give correct result. However in the other case the scan instance may > have been set with columns other than the very first column in the > row, causing scan to get nothing as the FirstKeyOnlyFilter removes > everything else. > https://issues.apache.org/jira/browse/HBASE-6042 is related. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira