[jira] [Created] (LUCENE-9066) Modal Strategy In Concurrent Query Execution

["Atri Sharma (Jira)" <ji...@apache.org>]

Atri Sharma created LUCENE-9066:
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             Summary: Modal Strategy In Concurrent Query Execution
                 Key: LUCENE-9066
                 URL: https://issues.apache.org/jira/browse/LUCENE-9066
             Project: Lucene - Core
          Issue Type: Improvement
            Reporter: Atri Sharma


When executing a query concurrently today, we do not take any sort of system statistics into account. For e.g. if the node is under high pressure, it is not advisable to spawn a large number of threads for a query since they are most likely to be blocked waiting for CPU to be available. However, the converse is that for a lightly loaded cluster, the query can consume as many threads as required.

 

This Jira tracks high level efforts in this direction. The first idea is to account the Executor's wait queue's size as a factor when allocating slices to a query's segments.



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