libhdfs-rs | Pure Rust Implementation of HDFS Client | Object Storage library

by hyunsik Rust Version: Current License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | libhdfs-rs Summary

libhdfs-rs is a Rust library typically used in Storage, Object Storage applications. libhdfs-rs has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Pure Rust Implementation of HDFS Client (not yet ready)

Support

Quality

Security

License

Reuse

Support

libhdfs-rs has a low active ecosystem.

It has 3 star(s) with 2 fork(s). There are 4 watchers for this library.

It had no major release in the last 6 months.

libhdfs-rs has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of libhdfs-rs is current.

Quality

libhdfs-rs has no bugs reported.

Security

libhdfs-rs has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

libhdfs-rs is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

libhdfs-rs releases are not available. You will need to build from source code and install.

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libhdfs-rs Key Features

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libhdfs-rs Examples and Code Snippets

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Community Discussions

Trending Discussions on Object Storage

Distributed secure MinIO in docker-compose

How to use openstack on client side

How to hard delete objects older than n-days in LakeFS?

How are objects from derived classes constructed in C++

Setting up distributed erasure code using minio on a local network on premise

What to keep as the cyber duck connection server endpoint URL in IBM-Cloud-cloud object storage

Ceph backfilling and available space decrease

Edit object data in IBM Cloud Object Storage or skip the first few rows when reading data

Could anyone explain to me very simply what prototypal inheritance is in the context of a task list in JavaScript? Extremely confused new JS student

ceph pg repair doesnt start right away

QUESTION

Distributed secure MinIO in docker-compose

Asked 2021-Dec-24 at 18:17

I have a quite complex system in Docker. Everything runs in a big docker-compose file. Previously everything runs on one (manager) node in my Docker Swarm so I have generated a CERT for my domain (with certbot) and I have used the below MinIO service in my compose file:

...

ANSWER

Answered 2021-Sep-24 at 20:46

I had to put the (Domain) CERT file to minio/certs/CAs folder instead of /root/.minio/certs folder. Furthermore I had to copy the CERT to the worker nodes (separated servers) if I didn't copy it to nodes the service didn't find it on the worker node.

The correct volumes parameter looks like as below:

Source https://stackoverflow.com/questions/68761241

QUESTION

How to use openstack on client side

Asked 2021-Dec-07 at 15:06

I try to make a upload/download services of files for my website, and i'm trying to use the object storage from openstack. The thing is, i have no problem doing it via php and openstack php sdk, but when i'm trying to do it via some javascript, i can't find a good sdk or methods. I'm not using node, I have a php server, and a javascript client. I would like to uploads or download files directly from the javascript client. I don't want the file to transfer through the php server. I managed to create openstack tokens with the php sdk, maybe i could send those to the javascript so then they can authenticate? It's been one week of searching with no solutions...

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ANSWER

Answered 2021-Dec-07 at 15:06

Openstack has a S3 plugin that can ease your search for a library/sdk.

Otherwise, you should forge a temporary URL server-side, I'm sure your PHP library has tooling for this. The URL can then be used client-side to PUT the file.

The temporary URL is forged in a way to open temporary write-only access for the upload. There is also the same kind of URL to open read-only access to some elements.

So, either the client requests for a place to upload to the PHP which sends back the URL, or simply have the client upload the file to your PHP that will forge the link and then redirect the request to the URL.

Source https://stackoverflow.com/questions/70262339

QUESTION

How to hard delete objects older than n-days in LakeFS?

Asked 2021-Nov-28 at 11:02

How to find and hard delete objects older than n-days in LakeFS? Later it'll be a scheduled job.

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ANSWER

Answered 2021-Nov-28 at 10:34

To do that you should use the Garbage Collection (GC) feature in lakeFS.

Note: This feature cleans objects from the storage only after they are deleted from your branches in lakeFS.

You will need to:

Define GC rules to set your desired retention period.

From the lakeFS UI, go to the repository you would like to hard delete objects from -> Settings -> Retention, and define the GC rule for each branch under the repository. For example -

Source https://stackoverflow.com/questions/70141714

QUESTION

How are objects from derived classes constructed in C++

Asked 2021-Nov-18 at 01:02

Im not a C++ pro, i've done mostly Java and C#. A teacher said something that confused me today. I've tried to validate the info by doing some research, but i ended up even more confused.

Lets say i have class A and class B. Class A is the base class and B is derived from A.

Now i already know that when an object of class B is made, the constructor from class A is called, and then the constructor from classe B is called. Similarly, when and object of class B is destroyed, the class B destructor is called, and then the ones from class A.

So far, my understanding was that Class B contains everything from class A except it's constructors and destructors. I thought that when an object from class B was built, only one object (of both types A and B) was created in memory.

Now my teacher is saying that when B is built, 2 separate objets are created and somehow "linked" together: one of class A and then one of class B. Both objects would exist in memory until the destruction of the class B object is called. Then the class B objet would be destroyed before the class A object is destroyed.

Which one is correct?

ps sorry if my english is so-so, it's not my native language...

Edit: ill try to rephrase:

I think: Class B contains all attributes and methods of class A. When i create an object from class B, only 1 object exists in memory. The constructor of class A is called just to initialize the part of my object that was originally from class A.

The teacher said: When i create an object from class B, 2 objects are created in memory. When i command the destruction of my object, the class B object that is in memory is destroyed first, and then the class A object that is also remaining in memory is destroyed. The teacher was never able to clarify how the class B object is able to use the methods and attributes of the class A object.

For me, this also seems to imply that there is a "ghost object" somewhere in memory that i am unaware of and of which i have almost no control.

...

ANSWER

Answered 2021-Nov-18 at 01:02

According to http://www.vishalchovatiya.com/memory-layout-of-cpp-object/#Layout_of_C_Object_With_Inheritance

These two classes:

Source https://stackoverflow.com/questions/70012841

QUESTION

Setting up distributed erasure code using minio on a local network on premise

Asked 2021-Aug-20 at 00:05

I was able to setup non EC mode easily, Now I am trying to setup minio server on local 3 node, as a distributed erasure code mode before I move to setup in the production. I want to replicate this setup in local network.

https://docs.min.io/docs/distributed-minio-quickstart-guide.html

Following the guide link :

I am running this command:

...

ANSWER

Answered 2021-Aug-20 at 00:05

The error message looks like there is a DNS issue with that hostname, use a valid resolvable hostname or IP's. As a side note four nodes is the minimum recommended for a production setup.

Source https://stackoverflow.com/questions/68778136

QUESTION

What to keep as the cyber duck connection server endpoint URL in IBM-Cloud-cloud object storage

Asked 2021-Aug-05 at 16:08

What to keep as the cyber duck connection server endpoint URL in IBM-Cloud-cloud object storage? My buckets details (Image) You can see my location in au-syd

My Cyberduck open connection prompt(Image)

What endpoint should I keep?? If i hve done ay mistake pls correct me.

Thanks in advance

...

ANSWER

Answered 2021-Aug-05 at 16:08

I think your Cyberduck version needs an update. I'm on version 7.10.0 (35184), which is current. I see an option for Server -- that's where you put your IBM endpoint. I used the public endpoint and it connects just fine, even to private-only buckets.

Try it like this:

Source https://stackoverflow.com/questions/68611645

QUESTION

Ceph backfilling and available space decrease

Asked 2021-Mar-30 at 08:10

I've recently just added an osd to my cluster and it started backfilling. The new osd disk max space is added to the cluster max size as expected. But there is a strange behaviour i can't understand. While backfilling is going on my max available space keeps decreasing. Is this expected behaviour? Will there be a available space increase after backfilling is done?

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ANSWER

Answered 2021-Mar-30 at 08:10

Yes, this is expected. I don't know the exact mechanism requiring this but during recovery/backfill the PGs that have to be remapped take additional space. After the remapping is finished you should see the expected results.

Source https://stackoverflow.com/questions/66856799

QUESTION

Edit object data in IBM Cloud Object Storage or skip the first few rows when reading data

Asked 2021-Mar-24 at 15:42

How to edit object data in IBM Cloud Object Storage or skip the first few rows when reading data.

I want to edit my files on IBM COS by using API directly, do we have any API can help to achieve? Thanks!

...

ANSWER

Answered 2021-Feb-25 at 09:51

The S3 API for Object Storage, including the IBM Cloud Object Storage (COS), has the concepts of bucket and object. The smallest level is object manipulation in a sense of uploading, downloading or deleting an object. Every file is an abstract object.

Thus, you cannot edit a spreadsheet or modify a video using that S3 API.

Source https://stackoverflow.com/questions/66331035

QUESTION

Could anyone explain to me very simply what prototypal inheritance is in the context of a task list in JavaScript? Extremely confused new JS student

Asked 2021-Mar-22 at 06:36

This is what I don't understand, and reading about it is over my head. I need a very dumbed down version to ever understand it:

Creating prototypal inheritance: Previously, you have created generic custom object for task that had a number of attributes (task name, description etc). Now, you will demonstrate your knowledge of prototypal inheritance by creating a top level task object and different types of tasks based on category. For example, you may have a task category of Grocery that will have different attributes than a task category of Education. However, both types of tasks will need to inherit some generic attributes and methods from the parent task object.

I also don't really understand how to store tasks as objects or why you would need to do this in the context of a task list, and how you would do it. I think this would be the first step before prototypal inheritance? Thank you to anyone who has the time to explain.

I'm currently failing my JavaScript Advanced class, so any tips are appreciated!

...

ANSWER

Answered 2021-Mar-22 at 06:36

$(document).ready(function () {
  var task = {
    name: "",
    description: "",
    status: "",
    eta: "",
    priority: "",
    owner: "",
    initiate() {
      console.log("Starting Task");
      this.status = "IN PROGRESS";
      console.log(this);
    },
    complete() {
      console.log("Ending Task");
      this.status = "COMPLETED";
      console.log(this);
    }
  };

  var education = {
    grade: "",
    studentName: "",
    subjects: [],
    __proto__: task
  };

  var grocery = {
    items: [],
    budget: "",
    spend: "",
    __proto__: task
  };

  education.grade = "10th";
  education.studentName = "Diana";
  education.subjects = ["Science", "History"];
  education.name = "Complete Assignments";
  education.description = "Useful for better grades";
  education.initiate();
  education.complete();
});

Source https://stackoverflow.com/questions/66740774

QUESTION

ceph pg repair doesnt start right away

Asked 2021-Mar-19 at 21:28

Every now and then i get a single pg inconsistency error on my cluster. As suggested by the docs I run ceph pg repair pg.id and the command gives "instructing pg x on osd y to repair" seems to be working as intended. However it doesn't start right away, what might be the cause of this? I'm running 24 hour scrubs so at any given time i have at least 8-10 pgs getting scrubbed or deep scrubbed. Do the pg processes such as scrubbing or repairing form a queue and does my repair command just wait for its turn? Or is there another issue behind this?

Edit:

Ceph health detail output :

...

ANSWER

Answered 2021-Mar-19 at 21:28

You have I/O errors, happen often due to faulty disks, as you see shard error :

Source https://stackoverflow.com/questions/66704113

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install libhdfs-rs

You can download it from GitHub.
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