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https://issues.apache.org/jira/browse/DRILL-6076?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17469892#comment-17469892
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ASF GitHub Bot commented on DRILL-6076:
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jnturton edited a comment on pull request #1086:
URL: https://github.com/apache/drill/pull/1086#issuecomment-1006572837
I propose that we return to this after Drill 2.0 and the probable
ValueVector overhaul.
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> Reduce the default memory from a total of 13GB to 5GB
> -----------------------------------------------------
>
> Key: DRILL-6076
> URL: https://issues.apache.org/jira/browse/DRILL-6076
> Project: Apache Drill
> Issue Type: Task
> Reporter: Kunal Khatua
> Assignee: James Turton
> Priority: Critical
> Fix For: 2.0.0
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> Currently, the default memory requirements for Drill are about 13GB, with the
> following allocations:
> * 4GB Heap
> * 8GB Direct Memory
> * 1GB CodeCache
> * 512MB MaxPermSize
> Also, with Drill 1.12.0, the recommendation is to move to JDK8, which makes
> the MaxPermSize as irrelevant.
> With that, the default requirements total to 13GB, which is rather high. This
> is especially a problem for scenarios where people are trying out Drill and
> might be using this in a development environment where 13GB is too high.
> When using the public [test
> framework|https://github.com/mapr/drill-test-framework/] for Apache Drill, it
> was observed that the framework's functional and unit tests passed
> successfully with memory as little as 5GB; based on the following allocation:
> * 1GB Heap
> * 3GB Direct Memory
> * 512MB CodeCache
> * 512MB MaxPermSize
> Based on this finding, the proposal is to reduce the defaults from the
> current settings to the values just mentioned above. The drill-env.sh file
> already has details in the comments, along with the recommended values that
> reflect the original 13GB defaults.
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