qfs | Quantcast File System

by quantcast C++ Version: 2.2.5 License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(3)Vulnerabilities Install Support

kandi X-RAY | qfs Summary

qfs is a C++ library typically used in Big Data, Hadoop applications. qfs has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Quantcast File System (QFS) is a high-performance, fault-tolerant, distributed file system developed to support MapReduce processing, or other applications reading and writing large files sequentially. QFS used in Quantcast production cluster. QFS servers have been tested on 64-bit CentOS 6 extensively and run on Linux variants. The QFS client tools work on OS X and Cygwin as well. The implementation details and features of QFS are discussed in detail in the project wiki.

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Quality

Security

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Support

qfs has a low active ecosystem.

It has 632 star(s) with 163 fork(s). There are 101 watchers for this library.

It had no major release in the last 12 months.

There are 15 open issues and 93 have been closed. On average issues are closed in 371 days. There are 4 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of qfs is 2.2.5

Quality

qfs has 0 bugs and 0 code smells.

Security

qfs has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

qfs code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

qfs 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

qfs releases are available to install and integrate.

Installation instructions are not available. Examples and code snippets are available.

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qfs Key Features

No Key Features are available at this moment for qfs.

qfs Examples and Code Snippets

No Code Snippets are available at this moment for qfs.

Community Discussions

Trending Discussions on qfs

"Convert" zlib stream to gzip?

Problem with throw exceptions when stack are empty ..... Queue / stack implementation

kdb - sending large CSV from local to server

QUESTION

"Convert" zlib stream to gzip?

Asked 2021-Dec-10 at 21:34

I have a blob of data which is compressed with zlib, now I need to decompress it but only have gzip at hand in a Linux environment. No possibility of getting any other tools unfortunately. Is there any way to "convert" the zlib data into something that gzip can decompress?

I read this one: https://unix.stackexchange.com/questions/22834/how-to-uncompress-zlib-data-in-unix

Where it's basically said to add a 10 bytes header and pass it into gzip. However, when I try this I don't get any output. The out file is empty.

...

ANSWER

Answered 2021-Dec-10 at 20:35

You got it right. Strip the first two bytes and prepend those ten bytes. Then gzip -dc will complain about an "unexpected end of file", but it will nevertheless decompress and write the result to your output file.

Unless the zlib stream is corrupt to begin with.

Source https://stackoverflow.com/questions/70309416

QUESTION

Problem with throw exceptions when stack are empty ..... Queue / stack implementation

Asked 2021-Oct-23 at 18:01

I need to throw an exception when both stacks are empty but i dont know how I should write it.

I have to implement a queue with 2 stacks!

this is main

...

ANSWER

Answered 2021-Oct-23 at 18:01

You need to change this:

Source https://stackoverflow.com/questions/69690358

QUESTION

kdb - sending large CSV from local to server

Asked 2020-Nov-24 at 15:34

All, I'm having some trouble sending a large csv-based tables (6 cols x 1mm+ rows) table to my server. I can bring tables back from my server with no issues. I've tried a few methods but presently I'm trying to read the csv and send it over as a string to build the table on the server. Perhaps I'm overlooking something very simple when assigning variables in the server string?

In trying to find a solution, I have been testing .Q.fs as it reads rows and inserts to a table thinking that I could just send a string and rebuild the table on the server. https://code.kx.com/q/kb/loading-from-large-files/#using-qfs

...

ANSWER

Answered 2020-Nov-24 at 15:34

If you can hold the entire csv/table in memory client side. You could use the h(func;args) notation for ipc. Edit - corrected link: https://code.kx.com/q/learn/startingkdb/ipc/

Either use assign apply in the root namespace:

Source https://stackoverflow.com/questions/64977264

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

Vulnerabilities

No vulnerabilities reported

Install qfs

You can download it from GitHub.

Support

We welcome contributions to QFS in the form of enhancement requests, patches, additional tests, bug reports, new ideas, and so on. Please submit issues using our JIRA instance and refer to the QFS code contribution policy when contributing code.

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