question Re: How to comment a property in nifi.properties or bootstrap using cloudera manager? in Support Questions

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

bsivalingam83 — Tue, 15 Sep 2020 16:38:49 GMT

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-high/ta-p/244999

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

Please help.

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

tjangid — Thu, 08 Oct 2020 04:02:34 GMT

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

bsivalingam83 — Tue, 09 Feb 2021 20:50:21 GMT

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

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

MattWho — Wed, 10 Feb 2021 18:27:09 GMT

@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

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

bsivalingam83 — Thu, 11 Feb 2021 07:05:24 GMT

Thanks @MattWho. Got it !!