Discuss Hitachi Vantara HCE-5920 Exam Topic 5 Question 82

You are running a Pentaho MapReduce (PMR) job that is facing on Hadoop. You review the YARN logs and determine that the mappers are generating out of memory errors.

Which action will resolve the mapper errors?

AEdit me Pentaho server startup script to increase the memory setting

BIncrease the Number of mapper tacks in the PMR step.

CSet the JVM memory parameters appropriately in the User Denned tab of the PMR step

DSet the Enable blocking option in the PMR step.

Suggested Answer: A

Get Premium HCE-5920 Questions as Interactive Web-Based Practice Test or PDF Real Exam Format Detailed Explanations Instant Access Get Your Practice Test

17 comments · newest first

Latrice 23 days ago

I feel like C is the most effective solution here.

Willow 28 days ago

A is a quick fix, but C addresses the root cause.

Barbra 1 month ago

C is definitely the way to go. Proper JVM settings are crucial.

Fletcher 1 month ago

D doesn't seem relevant to memory issues.

Kiera 1 month ago

B might just overload the system further.

Marg 2 months ago

A could work, but C is more targeted for the PMR step.

Nathan 2 months ago

I disagree, C seems more precise for JVM settings.

Lisha 2 months ago

I think option A is the best. More memory should help.

Phillip 2 months ago

Surprised that D is even an option, how would that help?

Tammi 2 months ago

I agree with A, but also consider C for fine-tuning.

Georgene 2 months ago

Wait, isn't increasing the number of mappers (B) just going to make it worse?

Phillip 3 months ago

I think C is the way to go, setting JVM parameters is key.

Chandra 3 months ago

Definitely A, more memory is usually the fix for OOM errors.

Florencia 3 months ago

I vaguely recall something about the Enable blocking option, but I’m not convinced it would directly address the memory issue we're facing here.

Lavonda 3 months ago

I think option C sounds familiar; we practiced setting JVM parameters in the User Defined tab during our last session. That might be the right approach.

Noel 3 months ago

I'm not entirely sure, but I feel like increasing the number of mapper tasks might not really help if the mappers are already running out of memory.

Zona 4 months ago

I remember we discussed memory settings in class, and I think option A could be a good choice to resolve the out of memory errors.

Hitachi Vantara HCE-5920 Exam - Topic 5 Question 82 Discussion