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[7.x] Small README note on bumping memory for builds (#75247) #75306

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Aug 18, 2020
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[7.x] Small README note on bumping memory for builds (#75247) #75306

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10 changes: 10 additions & 0 deletions src/dev/build/README.md
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Expand Up @@ -16,6 +16,16 @@ node scripts/build --release
node scripts/build --skip-node-download --debug --no-oss
```

# Fixing out of memory issues

Building Kibana and its distributables can take a lot of memory to finish successfully. Builds do make use of child processes, which means you can increase the amount of memory available by specifying `NODE_OPTIONS="--max-old-space-size=VALUE-IN-MEGABYTES"`.

```sh

# Use 4GB instead of the standard 1GB for building
NODE_OPTIONS="--max-old-space-size=4096" node scripts/build --release
```

# Structure

The majority of this logic is extracted from the grunt build that has existed forever, and is designed to maintain the general structure grunt provides including tasks and config. The [build_distributables.js] file defines which tasks are run.
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