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Posted to issues-all@impala.apache.org by "Alex Rodoni (Jira)" <ji...@apache.org> on 2019/08/28 22:01:02 UTC
[jira] [Closed] (IMPALA-8495) Impala Doc: Document Data Read Cache
[ https://issues.apache.org/jira/browse/IMPALA-8495?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alex Rodoni closed IMPALA-8495.
-------------------------------
Resolution: Fixed
> 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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