[GitHub] [accumulo] keith-turner commented on pull request #2258: Prevents compaction when tablet does not know of files

[GitBox <gi...@apache.org>]

keith-turner commented on pull request #2258:
URL: https://github.com/apache/accumulo/pull/2258#issuecomment-914572025


   > Asking for clarification - what happens if the check fails? Is it rescheduled or is that left up to the caller that scheduled the compaction?
   
   @EdColeman tablets are periodically examined and a compaction planner is asked to create zero or more compaction jobs (an immutable object the describes compaction work to do).  These jobs are queued to run later.  When the job actually goes to run, maybe things have changed (like this PR is checking for) in which case the job is ignored.  Later when the tablet is examined again, new jobs will be created that incorporate the changes.


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