Mailing-List: contact commits-help@cassandra.apache.org; run by ezmlm
Precedence: bulk
Reply-To: dev@cassandra.apache.org
Date: Thu, 21 Jul 2016 05:57:20 +0000 (UTC)
From: "Wei Deng (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
Message-ID: <JIRA.12610898.1349736028000.92212.1469080640493@Atlassian.JIRA>
In-Reply-To: <JIRA.12610898.1349736028000@Atlassian.JIRA>
References: <JIRA.12610898.1349736028000@Atlassian.JIRA> <JIRA.12610898.1349736028640@arcas>
Subject: [jira] [Updated] (CASSANDRA-4778) leveled compaction does less work
 in L0 than intended
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
archived-at: Thu, 21 Jul 2016 05:57:22 -0000


     [ https://issues.apache.org/jira/browse/CASSANDRA-4778?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wei Deng updated CASSANDRA-4778:
--------------------------------
    Labels: compaction lcs  (was: compaction)

> leveled compaction does less work in L0 than intended
> -----------------------------------------------------
>
>                 Key: CASSANDRA-4778
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4778
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.1.2
>            Reporter: Jonathan Ellis
>            Assignee: Jonathan Ellis
>            Priority: Minor
>              Labels: compaction, lcs
>             Fix For: 1.1.6
>
>         Attachments: 4778.txt
>
>
> We have this code in the candidate loop:
> {code}
> .               if (SSTable.getTotalBytes(candidates) > maxSSTableSizeInBytes)
>                 {
>                     // add sstables from L1 that overlap candidates
>                     candidates.addAll(overlapping(candidates, generations[1]));
>                     break;
>                 }
> {code}
> thus, as soon as we have enough to compact to make one L1 sstable's worth of data, we stop collecting candidates.


--
This message was sent by Atlassian JIRA
(v6.3.4#6332)