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Posted to issues@impala.apache.org by "Sahil Takiar (JIRA)" <ji...@apache.org> on 2019/05/14 14:37:00 UTC

[jira] [Resolved] (IMPALA-8428) Add support for caching file handles on s3

     [ https://issues.apache.org/jira/browse/IMPALA-8428?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sahil Takiar resolved IMPALA-8428.
----------------------------------
       Resolution: Fixed
    Fix Version/s: Impala 3.3.0

> Add support for caching file handles on s3
> ------------------------------------------
>
>                 Key: IMPALA-8428
>                 URL: https://issues.apache.org/jira/browse/IMPALA-8428
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Backend
>    Affects Versions: Impala 3.3.0
>            Reporter: Joe McDonnell
>            Assignee: Sahil Takiar
>            Priority: Critical
>             Fix For: Impala 3.3.0
>
>
> The file handle cache is currently disabled for S3, as the S3 connector needed to implement proper unbuffer support. Now that https://issues.apache.org/jira/browse/HADOOP-14747 is fixed, Impala should provide an option to cache S3 file handles.
> This is particularly important for data caching, as accessing the data cache happens after obtaining a file handle. If getting a file handle is slow, the caching will be less effective.



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