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https://issues.apache.org/jira/browse/AMBARI-23127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siddharth Wagle resolved AMBARI-23127.
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Resolution: Fixed
> Allow default value of number of parallel tasks run during Upgrade to be
> customizable
> -------------------------------------------------------------------------------------
>
> Key: AMBARI-23127
> URL: https://issues.apache.org/jira/browse/AMBARI-23127
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 2.0.0
> Reporter: Siddharth Wagle
> Assignee: Siddharth Wagle
> Priority: Critical
> Labels: pull-request-available
> Fix For: 2.6.2
>
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> On large clusters of 1000+ nodes the default value of 100 for max degree of
> parallelism results in Stop and Start command batches of 100 hosts and
> resulting operation taking longer because of the default batch size. This
> Jira adds a possible override through ambari.properties.
> Property:
> {noformat}
> stack.upgrade.default.parallelism{noformat}
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