[GitHub] [incubator-pinot] Jackie-Jiang commented on issue #5402: Rebalancing the segments didn't work when there is only one kafka partition

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

Jackie-Jiang commented on issue #5402:
URL: https://github.com/apache/incubator-pinot/issues/5402#issuecomment-629712786


   Hi @buchireddy, this is the expected behavior because partition-based assignment is implicit for the LLC consuming segments.
   In order to rebalance the completed segments on to another set of servers, you can configure another tag for the servers to hold the completed segments and use the TagOverrideConfig to relocate the completed segments to that tag.
   
   E.g. your current TenantConfig is:
   ```
   {
     "broker": "testTable",
     "server": "testTable"
   }
   ```
   You can configure a new tag "testTable_OFFLINE" and tag some servers, then change your TenantConfig to:
   ```
   {
     "broker": "testTable",
     "server": "testTable",
     "tagOverrideConfig": {
       "realtimeConsuming": "testTable_REALTIME",
       "realtimeCompleted": "testTable_OFFLINE"
     }
   }
   ```
   Then the rebalancer will relocate the completed segments to the servers with tag "testTable_OFFLINE". We also have periodic task to automatically relocate the completed segments.


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