How to comment a property in nifi.properties or bootstrap using cloudera manager?

[#1]

Hi,

I was trying to use nifi.provenance.repository.implementation=org.apache.nifi.provenance.WriteAheadProvenanceRepository. To do so i have to comment java.arg.13=-XX:+UseG1GC to get rid of any performance issues as per 
https://community.cloudera.com/t5/Community-Articles/HDF-CFM-NIFI-Best-practices-for-setting-up-a-hi...

However i find it difficult on how to do it via Cloudera Manager. 

Please help.

[#2]

Hello @bsivalingam83 

You may navigate to NiFi configuration and search for ignore.  To remove the “java.arg.13=-XX:+UseG1GC” you can add a property under the “bootstrap.conf ignored properties” section for “java.arg.13". Kindly let me know if this helps.

Br,

Tarun

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[#3]

Hello @tjangid,

Thanks for your reply. When i search for "ignore" under NiFi Configurations i was not getting any results. I also i checked in advanced category and i could find only "NiFi Node Advanced Configuration Snippet (Safety Valve) for staging/bootstrap.conf.xml" not any ignored section. Please let me know if am missing anything here.

Thanks,

Bala

[#4 · Accepted solution]

@bsivalingam83 

The ability to "ignore" properties in various NiFi config files was added with the CFM 1.0.1 release.

With older CFM versions (1.0.0) you can set a safety valve to overwrite the current set java.arg.13 value with something else:

Above simply defines a key=value pair which would simply not be used by NiFi bootstrap.  End result, NiFi no longer using G1GC and instead using the default Garbage Collector for your version of Java being used.

Hope this helps,

Matt

[#5]

Thanks @MattWho. Got it !!