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Posted to dev@slider.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2014/07/11 06:23:04 UTC

[jira] [Created] (SLIDER-226) Provide mechanism for rolling upgrade

Ted Yu created SLIDER-226:
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             Summary: Provide mechanism for rolling upgrade
                 Key: SLIDER-226
                 URL: https://issues.apache.org/jira/browse/SLIDER-226
             Project: Slider
          Issue Type: Improvement
            Reporter: Ted Yu


SLIDER-223 paves the road for supporting rolling upgrade on Slider deployed cluster.
User can specify a different image for a running cluster with N instances for role R.
The rolling upgrade would restart each of the N instances while maintaining the invariant that there're at least N-1 active instances for role R.
After restart, new image would be effective.

This capability would, e.g., allow HBase to perform compatibility check across releases.



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