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https://issues.apache.org/jira/browse/HBASE-6618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13964558#comment-13964558
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Alex Baranau commented on HBASE-6618:
-------------------------------------
right. I mean it won't be human-friendly though still... I thought more about
smth like this:
{code}
new FuzzyRowFilter.Builder()
.any(<length>) // meaning "????" for 4
.range(<range_start_bytes>, <range_end_bytes>) // builder will check that
length of those is the same
.any(<length>)
.fixed(<couple_fixed_bytes>)
.build();
{code}
We may also overload with allowing strings if makes sense. So that e.g.
"???(11-88)??AAA" could be built with:
{code}
new FuzzyRowFilter.Builder()
.any(3)
.range("11", "88")
.any(2)
.fixed("AAA")
.build();
{code}
thoughts?
> Implement FuzzyRowFilter with ranges support
> --------------------------------------------
>
> Key: HBASE-6618
> URL: https://issues.apache.org/jira/browse/HBASE-6618
> Project: HBase
> Issue Type: New Feature
> Components: Filters
> Reporter: Alex Baranau
> Assignee: Alex Baranau
> Priority: Minor
> Fix For: 0.99.0
>
> Attachments: HBASE-6618-algo-desc-bits.png, HBASE-6618-algo.patch,
> HBASE-6618.patch, HBASE-6618_2.path, HBASE-6618_3.path, HBASE-6618_4.patch,
> HBASE-6618_5.patch
>
>
> Apart from current ability to specify fuzzy row filter e.g. for
> <userId_actionId> format as ????_0004 (where 0004 - actionId) it would be
> great to also have ability to specify the "fuzzy range" , e.g. ????_0004,
> ..., ????_0099.
> See initial discussion here: http://search-hadoop.com/m/WVLJdX0Z65
> Note: currently it is possible to provide multiple fuzzy row rules to
> existing FuzzyRowFilter, but in case when the range is big (contains
> thousands of values) it is not efficient.
> Filter should perform efficient fast-forwarding during the scan (this is what
> distinguishes it from regex row filter).
> While such functionality may seem like a proper fit for custom filter (i.e.
> not including into standard filter set) it looks like the filter may be very
> re-useable. We may judge based on the implementation that will hopefully be
> added.
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