question Re: 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? in Archives of Support Questions (Read Only)

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?

cspencer — Wed, 01 Jun 2016 03:11:06 GMT

Re: 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?

hosako — Thu, 02 Jun 2016 05:08:15 GMT

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.

Re: 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?

hosako — Thu, 02 Jun 2016 05:08:16 GMT

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;

Re: 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?

cspencer — Thu, 02 Jun 2016 05:08:17 GMT

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?

Re: 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?

cspencer — Thu, 09 Jun 2016 20:28:21 GMT

Yes, here's the link I was referencing: https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.2/bk_installing_manually_book/content/ref-ffec9e6b-41f4-47de-b5cd-1403b4c4a7c8.1.html

Re: 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?

hosako — Fri, 10 Jun 2016 05:50:40 GMT

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

Re: 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?

cspencer — Fri, 10 Jun 2016 22:38:56 GMT

Thanks @Hajime!