Mailing-List: contact notifications-help@accumulo.apache.org; run by ezmlm
Precedence: bulk
Reply-To: jira@apache.org
Date: Sat, 26 Oct 2013 01:52:30 +0000 (UTC)
From: "John Vines (JIRA)" <jira@apache.org>
To: notifications@accumulo.apache.org
Message-ID: <JIRA.12654843.1372202902058.6312.1382752350392@arcas>
In-Reply-To: <JIRA.12654843.1372202902058@arcas>
References: <JIRA.12654843.1372202902058@arcas>
Subject: [jira] [Commented] (ACCUMULO-1534) Tablet Server using large number
 of decompressors during a scan
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


    [ https://issues.apache.org/jira/browse/ACCUMULO-1534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13805944#comment-13805944 ] 

John Vines commented on ACCUMULO-1534:
--------------------------------------

So it sounds like this is a bug with the hadoop gzip library that we utilize? Is there a relevant bug in their JIRA for this?

> Tablet Server using large number of decompressors during a scan
> ---------------------------------------------------------------
>
>                 Key: ACCUMULO-1534
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1534
>             Project: Accumulo
>          Issue Type: Bug
>    Affects Versions: 1.4.3
>            Reporter: Mike Drob
>             Fix For: 1.5.1, 1.6.0
>
>
> I believe this issue is similar to ACCUMULO-665. We've run into a situation where a complex iterator tree creates a large number of decompressors from the underlying CodecPool for serving scans. Each decompressor holds on to a large buffer and the total volume ends up killing the tserver.
> We have verified that turning off compression makes this problem go away.


--
This message was sent by Atlassian JIRA
(v6.1#6144)