Can not set custom MAX_HEAP_SIZE and HEAP_NEWSIZE

[hq-git]

BUG REPORT

1. Please describe the issue you observed:

   • I want to run rocketmq container and set a limit for the max heap size.

   • I want to through adding a docker container environment variable e.g. MAX_HEAP_SIZE to set the limit for the max heap size.

   • The script https://github.com/apache/rocketmq-docker/blob/master/image-build/scripts/runbroker-customize.sh using calculate_heap_sizes function to calculate heap size, which often makes the MAX_HEAP_SIZE too large and causing OOM.

2. Please tell us about your environment:

   • Run multiple rocketmq containers on one host.

3. Other information (e.g. detailed explanation, logs, related issues, suggestions how to fix, etc):

   • The runbroker-customize.sh calculate_heap_sizes function will not overrides the values of MAX_HEAP_SIZE and HEAP_NEWSIZE variables, when they already have values.

[jsbxyyx]

broker setup
copy an runbroker.sh，runserver.sh
-v ./data/broker/bin/runbroker.sh:/home/rocketmq/rocketmq-${ROCKETMQ_VERSION}/bin/runbroker.sh
-v ./data/broker/bin/runserver.sh:/home/rocketmq/rocketmq-${ROCKETMQ_VERSION}/bin/runserver.sh

[supery-chen]

+1