Apache Spark Memory Management | Unified Memory Management

[@bramar1278]

I really appreciate your time and efforts in making quality videos. Please explain us how these different memory allocations cause problems or exceptions. How to solve these exceptions or problems. A screen shot of the possible issues and code/configuration changes to solve the issue will be really helpful and we would be really greatful if you could provide these details as well. Once again I appreciate your work and efforts

[@anupambiswas2588]

Very well explained. But a follow up video on the practical implementation will be appreciated. Anyways great effort!!

[@shubhamshingi4657]

very good explanation and up to the point, thanks for this

[@gopinathchandrasekaran5235]

Great Video !!

[@sanskarsuman589]

you said that reservedmemory is a part of executor memory but in diagram you are showing 1gb of executor memory plus 300 m of reserved memory???

[@nibeshranjanprusty9818]

Hi Sir,the doubts fog clearing from mind after watching your spark videos,kindly make one session on real-time project from requirement to deployment it will very helpful ,Thank you.

[@sureshu5671]

Good information. thanks

[@engineerbaaniya4846]

Well explained

[@gobieee1]

good explanation, btw, Is there any way to increase the executor memory dynamically?

[@shyamsundar8665]

What is the reserved used for or responsible for ?

[@rajendraprasad8656]

Hi, Your videos are giving a good real time knowledge on spark and i thank you for that.. Could you please make a video on how to submit spark code(Pyspark) using shell script. also how to submit a spark job using shell script if both can be done differently. Thanks in advance

[@Ahyan-muhsin]

how do we find out if any executor is overallocated memory with --executor-memory but actually the job needs very less memory than provided executor memory parameter . Does this cause spark executer to reserve this memory and not being useful for other executors ?

[@gsekhar4367]

Can u pls do video on data skewness and on schema registry

[@sujaykbful]

Can you explain erasure coding vs replication

[@TheMan.0010]

amazing

[@DataSavvy]

Thanks Mani

[@saurabhgulati2505]

Where does resource manager such as yarn overhead lies in executor memory?

[@veereshhosagoudar875]

Reserved memory is heap memory

[@tanushreenagar3116]

nice

[@SuperDinu4u]

If execution memory can evict blocks of data from storage memory, what happens to those evicted blocks if they are to be consumed again Will they be computed again and stored again

[@pratiksingh9480]

@Data Savvy Same question I too have . When execution memory evicts storage memory , does it spill to disk ?

[@saurav0777]

Can u pls show how to monitor this memory usage and distribution via spark URL in your next upload?

[@i_ambhosale]

If data size is 16Gb and memory is 20GB what will use cache or persist?

[@shubhamgupta9375]

How to verify this if storage memory is not evicting execution memory

[@projjalchakraborty1806]

How to resolve OOM using above discussed concept???

[@pradipchinuke1539]

१ video on How to validate data..?

[@DataSavvy]

Thanks... Added this to my list

[@zillala4553]

@@DataSavvy thank you 👍👍

[@fuatylmaz9132]

I respect your effort but I expected more detailed video not such a basic video

[@TheMan.0010]

Hello sir, I have some questions if you could answer in free time when i read spark.read.csv(and provide inferSchema=True) Does it take all rows to guess the datatype of a column what is sampleRatio option in spark.read.csv ? is it related to infershema can i tell spark to use all rows while infering the schema for a column

[@rajdeepsinghborana2409]

Sir Is Hadoop and Spark are dying 😞

[@pratiksingh9480]

चचा kahan se sun liye

[@rajdeepsinghborana2409]

@@pratiksingh9480 yhi se chachaa 😂

[@bramar1278]

Hi Harjeet, I am experienced professional who need some help in understanding current market conditions for future planning purposes (a kind of short call for mentoring). Please let me know if you can provide 10-15 min time.

[@BishalKarki-pe8hs]

vak mugi