indexr | source columnar data format designed for fast & realtime

by shunfei Java Version: indexr-0.6.1 License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(9)Vulnerabilities Install Support

kandi X-RAY | indexr Summary

indexr is a Java library typically used in Big Data, Spark, Hadoop applications. indexr has build file available, it has a Permissive License and it has low support. However indexr has 117 bugs and it has 2 vulnerabilities. You can download it from GitHub.

IndexR is a super fast columnar data format on HDFS, which focus on fast analytic, both for massive static(historical) data and rapidly ingesting realtime data. IndexR is designed for OLAP. IndexR is greatly suitable for building data warehouse based on Hadoop ecosystem. Please feel free to file any issues.

Support

Quality

Security

License

Reuse

Support

indexr has a low active ecosystem.

It has 443 star(s) with 132 fork(s). There are 65 watchers for this library.

It had no major release in the last 12 months.

There are 7 open issues and 28 have been closed. On average issues are closed in 45 days. There are 3 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of indexr is indexr-0.6.1

Quality

indexr has 117 bugs (7 blocker, 6 critical, 57 major, 47 minor) and 2344 code smells.

Security

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

indexr code analysis shows 2 unresolved vulnerabilities (0 blocker, 0 critical, 0 major, 2 minor).

There are 20 security hotspots that need review.

License

indexr 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

indexr releases are available to install and integrate.

Build file is available. You can build the component from source.

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

indexr saves you 23787 person hours of effort in developing the same functionality from scratch.

It has 46480 lines of code, 4208 functions and 514 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed indexr and discovered the below as its top functions. This is intended to give you an instant insight into indexr implemented functionality, and help decide if they suit your requirements.

Parse an expression .
Start ingest rows .
Moves the table to temporary tables .
Assigns balance to the given node .
Matches tokens .
Refresh segments .
Encode a list of Strings
Entry point .
Travel segment by pack
Validate setting .

Get all kandi verified functions for this library.

indexr Key Features

No Key Features are available at this moment for indexr.

indexr Examples and Code Snippets

No Code Snippets are available at this moment for indexr.

Community Discussions

Trending Discussions on indexr

How can I prevent my Quicksort Algorithm from throwing a StackOverflowException

Python pandas - Index lookup based on criteria

Improve code efficiency when iterating through each row: Pandas Dataframe

Find shortest distance between multiple points

XSLT : for-each-group to turn a set of xml nodes into concurrent variables

Problems with cv::Rectangle in C++

When doing multiple SQL queries should I try to use same connection?

MVC javascript - After reload Model object in javascript is not refreshed

Ajax call to WebAPI goes to Error instead of success

QUESTION

How can I prevent my Quicksort Algorithm from throwing a StackOverflowException

Asked 2021-Jun-08 at 20:13

Im trying to write a quicksort algorithm in C#, and I've been getting System.StackOverflowExceptions for the last while and can't figure out why.

Here is my Class:

...

ANSWER

Answered 2021-Jun-08 at 11:46

a stack overflow error usually happens when you have a error in your recursion , ie a function keeps calling itself until there is no room left in the stack to hold all the references,

the only obvious candidate is

Source https://stackoverflow.com/questions/67885345

QUESTION

Python pandas - Index lookup based on criteria

Asked 2021-Jan-03 at 23:17

I have an extract of a dataframe below:

...

ANSWER

Answered 2021-Jan-03 at 23:17

Let us try idxmim which will return the min value index

Source https://stackoverflow.com/questions/65555883

QUESTION

Improve code efficiency when iterating through each row: Pandas Dataframe

Asked 2018-Sep-29 at 08:06

The code below, calculates the duration and distance between two dataframes and if the duration and distance is less than a specific amount , a value is appended to a new dataframe.

The code below is computationally expensive especially for a large dataframe.

...

ANSWER

Answered 2018-Sep-29 at 02:09

If you want speed do not use iterrows() if you can avoid it. Vectorization can give you 50-fold or 100-fold improvement in speeds.

This is an example of how to use vectorization on your code:

Source https://stackoverflow.com/questions/52562962

QUESTION

Find shortest distance between multiple points

Asked 2018-Jul-01 at 20:09

Imagine a small dataset of xy coordinates. These points are grouped by a variable called indexR, there are 3 groups in total. All xy coordinates are in the same units. The data looks approximately like so:

...

ANSWER

Answered 2017-Sep-20 at 13:59

you can use cross joins to have all the points combinations, calculate the total distance between all three points, then take the minimum of that.

Source https://stackoverflow.com/questions/46323781

QUESTION

XSLT : for-each-group to turn a set of xml nodes into concurrent variables

Asked 2017-Dec-13 at 17:41

I'm struggling with the following transformation.

My source is an XML for which I don't know to the root node (it's created on the fly by an ETL and I can't output the XML. Hence the presumed_root).

XML Source

...

ANSWER

Answered 2017-Dec-13 at 17:41

I see a few issues with your XSLT...

You are selecting /IndexGroup in your for-each-group which would mean the root element of your XML would have to be IndexGroup.
You try to cast IndexDate as an xs:date, but the format DD/MM/YYYY is not a valid xs:date.
You're creating xsl:variable's instead of literal result elements for the children of IndexNumbers
Since you're grouping by IndexRate and then by IndexRate + IndexYear, I think you need to do two separate for-each-group's.

Here's what I would do...

XML Input

Source https://stackoverflow.com/questions/47796413

QUESTION

Problems with cv::Rectangle in C++

Asked 2017-Oct-18 at 12:48

I have a problem when drawing a rectangle in a cv :: mat. I am making a communication between Unity and C ++ to generate an Android application.

I use the webcamtexture camera of unity and I send the information of to C ++ using the PInvoke method. Once in the C ++ code, I want to draw a rectangle but I get more than one in the image (see image) and I really do not understand why. I hope you can help me I attach the C++ and C# code.

...

ANSWER

Answered 2017-Oct-18 at 12:48

Just for the sake of completeness I will post the answer.

The problem is in the line

Source https://stackoverflow.com/questions/46807846

QUESTION

When doing multiple SQL queries should I try to use same connection?

Asked 2017-Jul-22 at 15:58

So sometimes in my Java application I need to send multiple queries to my MySQL database in the same method.

I am using connection pooling in my application:

...

ANSWER

Answered 2017-Jul-22 at 15:58

That would mean running your own connection pooling on top of the existing connection pooling. To make these two layers interact cleanly will not be easy.

But you'd probably get a performance improvement by passing an opened Connection into your getEmployee() method, so that you can acquire your connection outside, use it for multiple consecutive calls, and then close it. But I can't tell how much performance difference it makes, and it surely makes your code less elegant, compared to the current architecture.

Source https://stackoverflow.com/questions/45256161

QUESTION

MVC javascript - After reload Model object in javascript is not refreshed

Asked 2017-May-23 at 06:36

In MVC application, I have a javascript that accesses Model elements as follows:

...

ANSWER

Answered 2017-May-23 at 06:36

You can put setColors() function in partial view. Should work.

Source https://stackoverflow.com/questions/44126691

QUESTION

Ajax call to WebAPI goes to Error instead of success

Asked 2017-May-19 at 07:17

I have a Ajax call to a WebApi method. My Call is looks like this:

...

ANSWER

Answered 2017-May-19 at 07:17

dataType: 'json',

Its mean return type of data from server should be json

Make sure are you returning json object to ajax success call back - if not then you need to change it to dataType: 'text',

Deprecation Notice: The jqXHR.success(), jqXHR.error(), and jqXHR.complete() callbacks are removed as of jQuery 3.0. You can use jqXHR.done(), jqXHR.fail(), and jqXHR.always() instead More detial please visit - Visit

I hope this will work fine for you - still you facing error please comment below

Source https://stackoverflow.com/questions/44059183

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

Vulnerabilities

No vulnerabilities reported

Install indexr

You can download it from GitHub.
You can use indexr like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the indexr component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .