How to increase java heap size for SOLR in Linux environment

Original Question or Issue:	I was able to complete the Solr configuration. However, the indexed file count is -1. Please check and advise.
Environment:	Product - Filecloud Server Version - Any Platform - Any
Steps to Reproduce:
Error or Log Message:	fatal error: OutOfMemory encountered: Java heap space
Defect or Enhancement Number:
Cause:	SOLR crashes with an out-of-memory error. In some installations with large numbers of files (especially text-based documents), the heap memory is insufficient.
Resolution or Workaround:	Edit the file " /etc/default/solr.in.sh ". Look for the line below. `#SOLR_JAVA_MEM="-Xms512m -Xmx512m"` Uncomment it, and increase the value depending on the resource available on your machine. If possible, change it to `SOLR_JAVA_MEM="-Xms6144m -Xmx6144m".` After making changes, save the file and restart the Solr service by running the command below: `# service solr restart`
Notes:

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