[jira] [Created] (HBASE-29568) Allow for a configurable "grace period" when using Time Based Priority

["Wellington Chevreuil (Jira)" <ji...@apache.org>]

Wellington Chevreuil created HBASE-29568:
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             Summary: Allow for a configurable "grace period" when using Time Based Priority
                 Key: HBASE-29568
                 URL: https://issues.apache.org/jira/browse/HBASE-29568
             Project: HBase
          Issue Type: Sub-task
            Reporter: Wellington Chevreuil


This aims to introduce a "grace period" functionality in the bucket cache time based priority feature, allowing blocks for the given CF marked for grace period to have its age ignored by the time priority logic. 

The use case here is that "cold" data may have to be accessed rarely, by some batch jobs, so that in these rare job runs, it can be temporarily placed in the cache, then de-prioritised again.



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