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https://issues.apache.org/jira/browse/HBASE-3162?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Gray updated HBASE-3162:
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Fix Version/s: 0.90.0
Assignee: Jonathan Gray
Status: Patch Available (was: Open)
Patch up for review on rb.
> Add TimeRange support into Increment to optimize for counters that are
> partitioned on time
> ------------------------------------------------------------------------------------------
>
> Key: HBASE-3162
> URL: https://issues.apache.org/jira/browse/HBASE-3162
> Project: HBase
> Issue Type: Improvement
> Components: client, regionserver
> Affects Versions: 0.90.0
> Reporter: Jonathan Gray
> Assignee: Jonathan Gray
> Priority: Minor
> Fix For: 0.90.0
>
> Attachments: HBASE-3162-v1.patch
>
>
> In many use cases of increments, a given counter is only incremented during a
> specific window of time (ie. the counters are partitioned/sharded by time).
> With this kind of schema, you are constantly creating new counters. When a
> new counter is "created" (incremented the first time) you will always end up
> looking at a block from every file in the region because no previous value
> will exist. However, with the new TimeRange optimizations that skip files if
> they don't contain values of the TimeRange you're interested in, we could
> utilize that information to optimize the Get within the increment.
> This would be optional and an addition to the Increment class.
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