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Why Rocks DB logging of edgeHub is written filesystem?

See original GitHub issue

Expected Behavior

it is question. I am beginner so I may wrong this question.

I want to use tempfs /tmp/edgeHub because Rocks DB of edgeHub is very hard written at NAND disk (flash storage). So the disk lifespan was very short. (I know how to configuration of using tempfs at iothub.)

I think docker containers logging of defacto standard architecture is stdout. Why Rocks DB don’t use stdout & tempfs instead of rootfs? The product don’t wanted to inform log information to end user?

Current Behavior

I hope The edgeHub of Rocks DB logging to tempfs or stdout.

Steps to Reproduce

Send to edgeHub about many msg/sec,

Context (Environment)

Raspi 2 microsd TLC 16GB

Device (Host) Operating System

Architecture

arm32

Container Operating System

Raspi

Runtime Versions

iotedged

iotedge 1.0.7

Edge Agent

EdgeAgent1.0.7

Edge Hub

iEdgeHub 1.0.7

Docker

moby-engine_3.0.5_armhf

Logs

Additional Information

Issue Analytics

State:
Created 4 years ago
Reactions:1
Comments:15 (4 by maintainers)

Top GitHub Comments

1reaction

myagleycommented, Jun 5, 2019

No, the LSM tree persists directly to the filesystem. It doesn’t directly use stdout. The use of RocksDB is an internal implementation detail. It is not a public interface and isn’t expected to be interacted with directly by a user. The user interacts with it via the various Edge Hub APIs over mqtt/ampq/http etc.

0reactions

fabrizioguelicommented, Jan 21, 2020

Hello, Any news on the offline feature that @myagley was talking about? (Bound the message on RocksDB by size in addition to the time based limits that we have today)

When the limit is reached it would be useful to have a behavior similar to a circular buffer.

Has this functionality already been implemented?

Thanks for your support

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