[jira] [Created] (AMBARI-14076) Stack Upgrade: ExecuteStage class to support a list of Tasks as opposed to a single one

["Alejandro Fernandez (JIRA)" <ji...@apache.org>]

Alejandro Fernandez created AMBARI-14076:
--------------------------------------------

             Summary: Stack Upgrade: ExecuteStage class to support a list of Tasks as opposed to a single one
                 Key: AMBARI-14076
                 URL: https://issues.apache.org/jira/browse/AMBARI-14076
             Project: Ambari
          Issue Type: Story
          Components: ambari-server
    Affects Versions: 2.2.0
            Reporter: Alejandro Fernandez
            Assignee: Alejandro Fernandez
             Fix For: 2.2.0


We have a limitation today in the Upgrade Packs used for NonRolling (Express) Upgrade in which the ExecteStage class can only have a single Task, and this results in a lot of repetition and verbose packs.

E.g.,
{code}
      <!--HBASE-->
      <execute-stage service="HBASE" component="HBASE_MASTER" title="Apply config changes for HBase Master">
        <task xsi:type="configure" id="hdp_2_3_0_0_hbase_master_set_global_memstore_size"/>
      </execute-stage>

      <execute-stage service="HBASE" component="HBASE_MASTER" title="Calculating HBase Properties">
        <task xsi:type="server_action" summary="Calculating HBase Properties" class="org.apache.ambari.server.serveraction.upgrades.HBaseConfigCalculation" />
      </execute-stage>

      <execute-stage service="HBASE" component="HBASE_MASTER" title="Apply config changes for HBase Master">
        <task xsi:type="configure" id="hdp_2_3_0_0_hbase_master_adjust_authorization_coprocessors"/>
      </execute-stage>
{code}

The ExecuteStage class is inside ClusterGrouping.java



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