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https://issues.apache.org/jira/browse/HBASE-5257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13481462#comment-13481462
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Ted Yu commented on HBASE-5257:
-------------------------------
bq. 4) Finally modify ColumnPaginationFilter to return
SEEK_NEXT_COL,INCLUDE_AND_SEEK_NEXT_COL instead of
SKIP,INCLUDE_AND_SEEK_NEXT_COL respectively. Similarly for ColumnCountGetFilter
I guess you meant this:
4) Finally modify ColumnPaginationFilter to return
SEEK_NEXT_COL,INCLUDE_AND_SEEK_NEXT_COL instead of SKIP,SEEK_NEXT_COL
respectively. Similarly for ColumnCountGetFilter
@Varun:
If you can provide a patch as you outlined above, that would be nice.
> Allow filter to be evaluated after version handling
> ---------------------------------------------------
>
> Key: HBASE-5257
> URL: https://issues.apache.org/jira/browse/HBASE-5257
> Project: HBase
> Issue Type: Improvement
> Reporter: Lars Hofhansl
>
> There are various usecases and filter types where evaluating the filter
> before version are handled either do not make sense, or make filter handling
> more complicated.
> Also see this comment in ScanQueryMatcher:
> {code}
> /**
> * Filters should be checked before checking column trackers. If we do
> * otherwise, as was previously being done, ColumnTracker may increment
> its
> * counter for even that KV which may be discarded later on by Filter.
> This
> * would lead to incorrect results in certain cases.
> */
> {code}
> So we had Filters after the column trackers (which do the version checking),
> and then moved it.
> Should be at the discretion of the Filter.
> Could either add a new method to FilterBase (maybe excludeVersions() or
> something). Or have a new Filter wrapper (like WhileMatchFilter), that should
> only be used as outmost filter and indicates the same (maybe
> ExcludeVersionsFilter).
> See latest comments on HBASE-5229 for motivation.
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