Merge branch '0.5.1' into master

# Milvus 0.5.1 (TODO)

## Bug

## Feature

- \#90 - The server start error messages could be improved to enhance user experience

- \#104 - test_scheduler core dump

- \#115 - Using new structure for tasktable

## Improvement

- \#64 - Improvement dump function in scheduler

- \#80 - Print version information into log during server start

- \#82 - Move easyloggingpp into "external" directory

- \#92 - Speed up CMake build process

- \#96 - Remove .a file in milvus/lib for docker-version

- \#118 - Using shared_ptr instead of weak_ptr to avoid performance loss

- \#122 - Add unique id for Job

## Feature

## Task

# Milvus 0.5.0 (2019-10-21)

![Milvuslogo](https://github.com/milvus-io/docs/blob/master/assets/milvus_logo.png)

![LICENSE](https://img.shields.io/badge/license-Apache--2.0-brightgreen)

![Language](https://img.shields.io/badge/language-C%2B%2B-blue)

[![codebeat badge](https://codebeat.co/badges/e030a4f6-b126-4475-a938-4723d54ec3a7?style=plastic)](https://codebeat.co/projects/github-com-jinhai-cn-milvus-master)

![Release](https://img.shields.io/badge/release-v0.5.0-orange)

![Release_date](https://img.shields.io/badge/release_date-October-yellowgreen)

- [Slack Community](https://join.slack.com/t/milvusio/shared_invite/enQtNzY1OTQ0NDI3NjMzLWNmYmM1NmNjOTQ5MGI5NDhhYmRhMGU5M2NhNzhhMDMzY2MzNDdlYjM5ODQ5MmE3ODFlYzU3YjJkNmVlNDQ2ZTk)

- [Twitter](https://twitter.com/milvusio)

## What is Milvus

Milvus is an open source similarity search engine for massive feature vectors. Designed with heterogeneous computing architecture for the best cost efficiency. Searches over billion-scale vectors take only milliseconds with minimum computing resources.

Milvus is an open source similarity search engine for massive-scale feature vectors. Built with heterogeneous computing architecture for the best cost efficiency. Searches over billion-scale vectors take only milliseconds with minimum computing resources.

Milvus provides stable Python, Java and C++ APIs.

Keep up-to-date with newest releases and latest updates by reading Milvus [release notes](https://milvus.io/docs/en/releases/v0.5.0/).

Keep up-to-date with newest releases and latest updates by reading Milvus [release notes](https://milvus.io/docs/en/release/v0.5.0/).

- Heterogeneous computing

  Milvus is designed with heterogeneous computing architecture for the best performance and cost efficiency. 

  Milvus is built with heterogeneous computing architecture for the best performance and cost efficiency. 

- Multiple indexes

## Get started

### Hardware Requirements

### Hardware requirements

| Component | Recommended configuration           |

| --------- | ----------------------------------- |

| CPU       | Intel CPU Haswell or higher         |

| GPU       | NVIDIA Pascal series or higher      |

| Memory    | 8 GB or more (depends on data size) |

| Storage   | SATA 3.0 SSD or higher              |

| RAM       | 8 GB or more (depends on data size) |

| Hard drive| SATA 3.0 SSD or higher              |

### Install using docker

```shell

$ cd [Milvus sourcecode path]/core

./ubuntu_build_deps.sh

$ ./ubuntu_build_deps.sh

```

##### Step 2 Build

Refer to [this link](https://github.com/milvus-io/milvus-sdk-java/tree/master/examples) for the example code.

## Milvus roadmap

Please read our [roadmap](https://milvus.io/docs/en/roadmap/) to learn about upcoming features.

## Contribution guidelines

Contributions are welcomed and greatly appreciated. If you want to contribute to Milvus, please read our [contribution guidelines](CONTRIBUTING.md). This project adheres to the [code of conduct](CODE_OF_CONDUCT.md) of Milvus. By participating, you are expected to uphold this code.

Contributions are welcomed and greatly appreciated. Please read our [contribution guidelines](CONTRIBUTING.md) for detailed contribution workflow. This project adheres to the [code of conduct](CODE_OF_CONDUCT.md) of Milvus. By participating, you are expected to uphold this code.

We use [GitHub issues](https://github.com/milvus-io/milvus/issues/new/choose) to track issues and bugs. For general questions and public discussions, please join our community.

To connect with other users and contributors, welcome to join our [slack channel](https://join.slack.com/t/milvusio/shared_invite/enQtNzY1OTQ0NDI3NjMzLWNmYmM1NmNjOTQ5MGI5NDhhYmRhMGU5M2NhNzhhMDMzY2MzNDdlYjM5ODQ5MmE3ODFlYzU3YjJkNmVlNDQ2ZTk). 

## Milvus Roadmap

## Thanks

Please read our [roadmap](https://milvus.io/docs/en/roadmap/) to learn about upcoming features.

We greatly appreciate the help of the following people.

- [akihoni](https://github.com/akihoni) found a broken link and a small typo in the README file.

## Resources

[Milvus roadmap](https://milvus.io/docs/en/roadmap/)

## License

[Apache 2.0 license](LICENSE)

[Apache License 2.0](LICENSE)

String cron_timezone = "TZ=Asia/Shanghai"

String cron_string = BRANCH_NAME == "master" ? "H 0 * * * " : ""

cron_string =  BRANCH_NAME == "0.5.1" ? "H 1 * * * " : cron_string

pipeline {

    agent none

    triggers {

        cron """${cron_timezone}

            ${cron_string}"""

    }

    options {

        timestamps()

    }

                            steps {

                                container('milvus-test-env') {

                                    script {

                                        boolean isNightlyTest = isTimeTriggeredBuild()

                                        if (isNightlyTest) {

                                            load "${env.WORKSPACE}/ci/jenkins/jenkinsfile/singleDevNightlyTest.groovy"

                                        } else {

                                            load "${env.WORKSPACE}/ci/jenkins/jenkinsfile/singleDevTest.groovy"

                                        }

                                    }

                                }

                            }

                        }

                        stage ("Cleanup Dev") {

                            steps {

    }

}

boolean isTimeTriggeredBuild() {

    if (currentBuild.getBuildCauses('hudson.triggers.TimerTrigger$TimerTriggerCause').size() != 0) {

        return true

    }

    return false

}

try {

    def helmResult = sh script: "helm status ${env.PIPELINE_NAME}-${env.BUILD_NUMBER}-single-gpu", returnStatus: true

    if (!helmResult) {

        sh "helm del --purge ${env.PIPELINE_NAME}-${env.BUILD_NUMBER}-single-gpu"

    }

} catch (exc) {

    def helmResult = sh script: "helm status ${env.PIPELINE_NAME}-${env.BUILD_NUMBER}-single-gpu", returnStatus: true

    if (!helmResult) {

timeout(time: 60, unit: 'MINUTES') {

timeout(time: 30, unit: 'MINUTES') {

    dir ("ci/jenkins/scripts") {

        sh "./coverage.sh -o /opt/milvus -u root -p 123456 -t \$POD_IP"

        // Set some env variables so codecov detection script works correctly