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https://issues.apache.org/jira/browse/HBASE-15410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16155580#comment-16155580
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Chia-Ping Tsai commented on HBASE-15410:
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{code}
+ private Set<Filter> seekHintFilter = new HashSet<>();
{code}
Why use HashSet rather than List?
> Utilize the max seek value when all Filters in MUST_PASS_ALL FilterList
> return SEEK_NEXT_USING_HINT
> ---------------------------------------------------------------------------------------------------
>
> Key: HBASE-15410
> URL: https://issues.apache.org/jira/browse/HBASE-15410
> Project: HBase
> Issue Type: Improvement
> Reporter: Ted Yu
> Assignee: Ted Yu
> Labels: filter, perfomance
> Attachments: 15410.v1.patch, 15410.v2.patch, 15410-wip.patch
>
>
> As Preston mentioned in the comment in HBASE-15243:
> https://issues.apache.org/jira/browse/HBASE-15243?focusedCommentId=15143557&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15143557
> An optimization for filters returning a SEEK_NEXT_USING_HINT would be to seek
> to the highest hint (Any previous/lower row won't be accepted by the filter
> returning that seek).
> This JIRA is to explore this potential optimization.
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