[jira] [Commented] (BIGTOP-2737) Spark charm doesn't handle HA or examples well

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BIGTOP-2737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15966593#comment-15966593 ] 

ASF GitHub Bot commented on BIGTOP-2737:
----------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/bigtop/pull/194


> Spark charm doesn't handle HA or examples well
> ----------------------------------------------
>
>                 Key: BIGTOP-2737
>                 URL: https://issues.apache.org/jira/browse/BIGTOP-2737
>             Project: Bigtop
>          Issue Type: Bug
>          Components: deployment
>    Affects Versions: 1.2.0
>            Reporter: Kevin W Monroe
>            Assignee: Kevin W Monroe
>            Priority: Minor
>             Fix For: 1.3.0
>
>
> The Spark charm can be reconfigured at runtime to work in local, standalone, standalone-HA (with zookeeper), or yarn modes.  In any of these modes, the user can run things like SparkPI to verify functionality.  There are a few problems with this in the current charm:
> - transitioning out of HA mode does not reset the zk connection string correctly
> - transitioning into HA mode before the zk ensemble has settled can cause the spark master to fetch invalid data from zk; ensure zk is settled before starting spark master
> - master/worker services are always started; ensure we start services relevant for the execution mode [0]
> - spark-examples.jar location has changed in spark2
> - the add-on benchmark suite (sparkbench from ibm) is not compatible with spark 2.1; include a pagerank benchmark that works across 1.5 and 2.1
> To ease future maintenance, the spark charm needs a good refactoring to simplify the reactive logic.  It's currently too hard to follow what is happening when the deployment topology changes.
> [0] - this may belong in the spark puppet recipe, but it's easy enough to fix in the charm while investigating a better place.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)