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Posted to issues@kylin.apache.org by "liyang (JIRA)" <ji...@apache.org> on 2016/06/27 05:41:52 UTC

[jira] [Resolved] (KYLIN-1718) Grow ByteBuffer Dynamically in Cube Building and Query

     [ https://issues.apache.org/jira/browse/KYLIN-1718?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

liyang resolved KYLIN-1718.
---------------------------
    Resolution: Fixed

> Grow ByteBuffer Dynamically in Cube Building and Query
> ------------------------------------------------------
>
>                 Key: KYLIN-1718
>                 URL: https://issues.apache.org/jira/browse/KYLIN-1718
>             Project: Kylin
>          Issue Type: Improvement
>          Components: Job Engine, Query Engine
>    Affects Versions: v1.5.1, v1.5.2
>            Reporter: Yerui Sun
>            Assignee: liyang
>             Fix For: v1.5.3
>
>
> In Cube Building Mapper/Reducer and CubeVisitService, we use an allocated ByteBuffer to store encoded metrics value, with a constant size RowConstants.ROWVALUE_BUFFER_SIZE, which is 1MB by default.
> If the metrics value is larger than 1MB, such as high cardinality bitmap,  BufferOverflowException will be threw. We need grow the ByteBuffer if the exception occured.



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