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Posted to issues@impala.apache.org by "Tim Armstrong (JIRA)" <ji...@apache.org> on 2017/08/08 15:12:00 UTC
[jira] [Resolved] (IMPALA-5661) Consider allowing configuration of
buffer pool size
[ https://issues.apache.org/jira/browse/IMPALA-5661?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tim Armstrong resolved IMPALA-5661.
-----------------------------------
Resolution: Fixed
Fix Version/s: Impala 2.10.0
IMPALA-5661: buffer pool limit
Adds the --buffer_pool_limit flag to control the buffer pool size.
It can be specified as either an absolute memory value or a percentage
of the process memory limit
Testing:
Started up a cluster with --buffer_pool_limit=10%, confirmed via
/metrics page that the buffer pool limit was reduced to ~800MB on
my system.
Change-Id: Ia64e21e0d5a7cf35a9064f365c6c86db13fbd73d
Reviewed-on: http://gerrit.cloudera.org:8080/7462
Reviewed-by: Matthew Jacobs <mj...@cloudera.com>
Tested-by: Impala Public Jenkins
> Consider allowing configuration of buffer pool size
> ---------------------------------------------------
>
> Key: IMPALA-5661
> URL: https://issues.apache.org/jira/browse/IMPALA-5661
> Project: IMPALA
> Issue Type: Sub-task
> Components: Backend
> Affects Versions: Impala 2.10.0
> Reporter: Tim Armstrong
> Assignee: Tim Armstrong
> Labels: resource-management
> Fix For: Impala 2.10.0
>
>
> Currently the buffer pool size is hard-coded to be 80% of the process memory limit. We expect that this is a reasonable default but it may be useful to add a safety value command line argument to allow control over this.
> E.g.
> --buffer_pool_limit=80% would be the default, and it could be set to values like --buffer_pool_size=70% or --buffer_pool_size=40g
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