In HDP 2.3.2 tez.container.max.java.heap.fraction is an optional property to set; what are the ramifications for not setting this property?

[#1 · Accepted solution]

May I ask which document are you referencing to?

If my IDE services me correctly, this parameter is used only in two places (TezClientUtils and AMContainerHelpers), and if you don't set, it uses the default value 0.8 all the time.

[#2]

I hope I'm not misunderstanding the question, but if you didn't set, 0.8 is the default value:

public static final double TEZ_CONTAINER_MAX_JAVA_HEAP_FRACTION_DEFAULT = 0.8;

[#3]

Yes, I saw that in the documentation. But from reading the documentation from the Apache site, it leads one to believe that you can opt to not set this property. Is that correct?

[#4]

Yes, here's the link I was referencing: https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.2/bk_installing_manually_book/content/ref-ffe...

[#5]

If not set, 0.8 will be / should be used.

[#6]

Thanks @Hajime!