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From "Hari Sekhon (JIRA)" <>
Subject [jira] [Updated] (AMBARI-8749) Parallel Service Actions
Date Tue, 20 Jan 2015 16:45:34 GMT


Hari Sekhon updated AMBARI-8749:
    Environment: HDP 2.2  (was: HDP 2.1)

> Parallel Service Actions
> ------------------------
>                 Key: AMBARI-8749
>                 URL:
>             Project: Ambari
>          Issue Type: Improvement
>    Affects Versions: 1.7.0
>         Environment: HDP 2.2
>            Reporter: Hari Sekhon
> Ambari is still doing independent service actions in serial rather than in parallel.
This is basically wasting significant time waiting for different services to restart one after
another when one service starting back up doesn't depend on the other service behind which
they are waiting.
> Each service's actions should not wait on any other service except when there is a startup
dependency such as HBase, SolrCloud, HA ZKFC waiting on ZooKeeper for example.
> Given that HDFS Balancer action doesn't block an adjacent service restart there must
already be some mechanism for this parallelism in the code?
> Regards,
> Hari Sekhon

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