Kunal Khatua created DRILL-6076:
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Summary: Reduce the default memory settings from a total of 13GB
to 5GB
Key: DRILL-6076
URL: https://issues.apache.org/jira/browse/DRILL-6076
Project: Apache Drill
Issue Type: Bug
Reporter: Kunal Khatua
Assignee: Kunal Khatua
Priority: Critical
Fix For: 1.13.0
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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