Mailing-List: contact yarn-dev-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Date: Fri, 23 Jun 2017 13:36:06 +0000 (UTC)
From: "Zoltan Haindrich (JIRA)" <jira@apache.org>
To: yarn-dev@hadoop.apache.org
Message-ID: <JIRA.13082121.1498224920000.91908.1498224966000@Atlassian.JIRA>
In-Reply-To: <JIRA.13082121.1498224920000@Atlassian.JIRA>
References: <JIRA.13082121.1498224920000@Atlassian.JIRA> <JIRA.13082121.1498224920353@jira-lw-us.apache.org>
Subject: [jira] [Created] (YARN-6738) LevelDBCacheTimelineStore should reuse
 ObjectMapper instances
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
archived-at: Fri, 23 Jun 2017 13:36:11 -0000

Zoltan Haindrich created YARN-6738:
--------------------------------------

             Summary: LevelDBCacheTimelineStore should reuse ObjectMapper instances
                 Key: YARN-6738
                 URL: https://issues.apache.org/jira/browse/YARN-6738
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: timelineserver
            Reporter: Zoltan Haindrich


Using TezUI sometimes times out...and the cause of it was that the query was quite large; and the leveldb handler seems like recreates the {{ObjectMapper}} for every read - this is unfortunate; since the ObjectMapper have to rescan the class annotations which may take some time.

Keeping the objectmapper reduces the ATS call time from 17 seconds to 3 seconds for me...which was enough to get my tez-ui working again :)


--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

---------------------------------------------------------------------
To unsubscribe, e-mail: yarn-dev-unsubscribe@hadoop.apache.org
For additional commands, e-mail: yarn-dev-help@hadoop.apache.org