Slider

Slider is a YARN application to deploy existing distributed applications on YARN, monitor them and make them larger or smaller as desired -even while the cluster is running.

Clusters can be stopped and restarted later; the distribution of the deployed application across the YARN cluster is persisted -enabling a best-effort placement close to the previous locations on a cluster start. Applications which remember the previous placement of data (such as HBase) can exhibit fast start-up times from this feature.

YARN itself monitors the health of 'YARN containers" hosting parts of the deployed application -it notifies the Slider manager application of container failure. Slider then asks YARN for a new container, into which Slider deploys a replacement for the failed component. As a result, Slider can keep the size of managed applications consistent with the specified configuration, even in the face of failures of servers in the cluster -as well as parts of the application itself

Open-Source Development

Apache Slider is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by Apache Incubator.

Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF.

Mailing Lists

We have a single mailing list for developers and users of Slider: dev@slider.incubator.apache.org

You can subscribe to this by emailing dev-subscribe@slider.incubator.apache.org from the email account to which you wish to subscribe from -and follow the instructions returned.
You can unsubscribe later by emailing dev-unsubscribe@slider.incubator.apache.org

There is a mailing list of every commit to the source code repository, commits@slider.incubator.apache.org. This is generally only of interest to active developers.

Bug reports

Bug reports and other issues can be filed on the Apache Jira server. Please use the SLIDER project for filing the issues.

Source code access

Read-only:

Read-write (for committers):

https://git-wip-us.apache.org/repos/asf/incubator-slider.git

License

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

 (http://www.apache.org/licenses/LICENSE-2.0)

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License. See accompanying LICENSE file.

Export Control

This distribution includes cryptographic software. The country in which you currently reside may have restrictions on the import, possession, use, and/or re-export to another country, of encryption software. BEFORE using any encryption software, please check your country's laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See http://www.wassenaar.org/ for more information.

The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software using or performing cryptographic functions with asymmetric algorithms. The form and manner of this Apache Software Foundation distribution makes it eligible for export under the License Exception ENC Technology Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for both object code and source code.

The following provides more details on the included cryptographic software:

Apache Slider uses the built-in java cryptography libraries. See Oracle's information regarding Java cryptographic export regulations for more details: http://www.oracle.com/us/products/export/export-regulations-345813.html

Apache Slider uses the SSL libraries from the Jetty project distributed by the Eclipse Foundation (http://eclipse.org/jetty).

License

apache/incubator-retired-slider

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