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Posted to notifications@asterixdb.apache.org by "Chen Luo (JIRA)" <ji...@apache.org> on 2017/12/01 04:28:00 UTC

[jira] [Updated] (ASTERIXDB-2184) Immutable disk version of BTree

     [ https://issues.apache.org/jira/browse/ASTERIXDB-2184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chen Luo updated ASTERIXDB-2184:
--------------------------------
    Component/s: STO - Storage
                 HYR - Hyracks

> Immutable disk version of BTree
> -------------------------------
>
>                 Key: ASTERIXDB-2184
>                 URL: https://issues.apache.org/jira/browse/ASTERIXDB-2184
>             Project: Apache AsterixDB
>          Issue Type: Improvement
>          Components: HYR - Hyracks, STO - Storage
>            Reporter: Chen Luo
>            Assignee: Chen Luo
>
> BTree is currently heavily used in our codebase, e.g., for primary index, deleted keys, inverted index etc. Most of BTrees of a dataset are immutable, as they are from disk components. However, our current codebase only has one version of mutable BTree, which has quite a number of overhead on locking/concurrency control during normal operations.



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