[jira] [Updated] (IMPALA-8495) Impala Doc: Document Data Read Cache

["Alex Rodoni (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-8495?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alex Rodoni updated IMPALA-8495:
--------------------------------
    Labels: in_33  (was: future_release_doc in_33)

> Impala Doc: Document Data Read Cache
> ------------------------------------
>
>                 Key: IMPALA-8495
>                 URL: https://issues.apache.org/jira/browse/IMPALA-8495
>             Project: IMPALA
>          Issue Type: Task
>          Components: Docs
>    Affects Versions: Impala 3.3.0
>            Reporter: Michael Ho
>            Assignee: Alex Rodoni
>            Priority: Major
>              Labels: in_33
>             Fix For: Impala 3.3.0
>
>
> IMPALA-8341 introduces a data cache for remote reads. In particular, it caches data for non-local reads (e.g. S3, ABFS, ADLS). The data cache can be enabled setting the startup flag {{--data_cache=<dir1>,<dir2>,...,<dirN>:<quota>}} in which {{<dir1>,...,<dirN>}} are directories on local filesystem and {{quota}} is the storage consumption quota for each directory. Note that multiple Impala daemons running on the same host *must not* share cache directories.



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