drill-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Padma Penumarthy (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-5287) Provide option to skip updates of ephemeral state changes in Zookeeper
Date Tue, 21 Feb 2017 21:43:44 GMT
Padma Penumarthy created DRILL-5287:
---------------------------------------

             Summary: Provide option to skip updates of ephemeral state changes in Zookeeper
                 Key: DRILL-5287
                 URL: https://issues.apache.org/jira/browse/DRILL-5287
             Project: Apache Drill
          Issue Type: Bug
    Affects Versions: 1.9.0
            Reporter: Padma Penumarthy
            Assignee: Padma Penumarthy
             Fix For: 1.10


We put transient profiles in zookeeper and update state as query progresses and changes states.
It is observed that this adds latency of ~45msec for each update in the query execution path.
This gets even worse when high number of concurrent queries are in progress. For concurrency=100,
the average query response time even for short queries  is 8 sec vs 0.2 sec with these updates
disabled. For short lived queries in a high-throughput scenario, it is of no value to update
state changes in zookeeper. We need an option to disable these updates for short running operational
queries.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

Mime
View raw message