[jira] [Created] (HBASE-27676) Scan handlers in the RPC executor should match at least one scan queues

["Xiaolin Ha (Jira)" <ji...@apache.org>]

Xiaolin Ha created HBASE-27676:
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             Summary: Scan handlers in the RPC executor should match at least one scan queues
                 Key: HBASE-27676
                 URL: https://issues.apache.org/jira/browse/HBASE-27676
             Project: HBase
          Issue Type: Improvement
    Affects Versions: 2.5.3
            Reporter: Xiaolin Ha
            Assignee: Xiaolin Ha


{code:java}
int scanQueues = Math.max(0, (int) Math.floor(readQueues * callqScanShare));
int scanHandlers = Math.max(0, (int) Math.floor(readHandlers * callqScanShare));

if ((readQueues - scanQueues) > 0) {
  readQueues -= scanQueues;
  readHandlers -= scanHandlers;
} else {
  scanQueues = 0;
  scanHandlers = 0;
} {code}
When readQueues * callqScanShare < 1 but readHandlers * callqScanShare > 1, there will be some active scan handlers with NO scan queues.



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