[GitHub] morningman opened a new pull request #336: First commit of new tablet repair framework

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

morningman opened a new pull request #336: First commit of new tablet repair framework
URL: https://github.com/apache/incubator-doris/pull/336
 
 
   There are 3 new main classes
   
   1. TabletScanner
   
           This scanner is responsible for scanning all unhealthy tablets,
           and add them to the TabletFactory.
           It does not responsible for any scheduler of tablet repairing or balance.
   
   2. TabletFactory
   
           TabletFactory saved the tablets produced by TabletScanner and try to repair them.
           It also tries to balance the cluster load at each round.
   
   TabletScanner runs at a interval of 1 min.
   TabletFactory runs at a interval of 1 sec.
   And at each run, it will handle at most 10 tablets.
   A backend slots map is saved in TabletFactory, to limit the number of concurrent
   running tasks on one Backend.
   
   TODO:
   1. balance logic is not implemented yet.
   2. clone task finish report is not handled yet.
   3. no unit test cases.
   
   ISSUE: #335 

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