drill-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Kunal Khatua (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (DRILL-5287) Provide option to skip updates of ephemeral state changes in Zookeeper
Date Tue, 28 Mar 2017 06:15:41 GMT

     [ https://issues.apache.org/jira/browse/DRILL-5287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kunal Khatua closed DRILL-5287.
-------------------------------

Verified by running a SQLLine session with the update disabled and running a sufficiently
long running query. The web-UI does not list the query in running state, but only when the
query is complete and the web-page refreshed. 

> 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
>              Labels: doc-impacting, ready-to-commit
>             Fix For: 1.10.0
>
>
> 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