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From "Chen Luo (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (ASTERIXDB-2243) Bloomfilter size is overly calculated for update-heavy workloads
Date Wed, 17 Jan 2018 17:06:00 GMT

     [ https://issues.apache.org/jira/browse/ASTERIXDB-2243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chen Luo resolved ASTERIXDB-2243.
---------------------------------
    Resolution: Fixed

> Bloomfilter size is overly calculated for update-heavy workloads
> ----------------------------------------------------------------
>
>                 Key: ASTERIXDB-2243
>                 URL: https://issues.apache.org/jira/browse/ASTERIXDB-2243
>             Project: Apache AsterixDB
>          Issue Type: Bug
>          Components: STO - Storage
>            Reporter: Chen Luo
>            Assignee: Chen Luo
>            Priority: Major
>
> The current bloom filter calculation assumes the data is append-only without updates.
Each bloom filter maintains the number of elements. When bulkload a new bloom filter through
merge, the new size is simply the sum of all sizes. However, in a update-heavy workloads,
even though the actual size of the merged disk component does not increase, the estimated
bloom filter size will keep increasing and consume too much space.
>  



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