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Posted to issues@impala.apache.org by "Tim Armstrong (JIRA)" <ji...@apache.org> on 2017/07/13 20:38:00 UTC

[jira] [Created] (IMPALA-5661) Consider allowing configuration of buffer pool size

Tim Armstrong created IMPALA-5661:
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             Summary: 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


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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