apex-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Pramod Immaneni (JIRA)" <j...@apache.org>
Subject [jira] [Created] (APEXCORE-339) Support ability to tag operators as idempotent or non-idempotent
Date Thu, 11 Feb 2016 23:59:18 GMT
Pramod Immaneni created APEXCORE-339:
----------------------------------------

             Summary: Support ability to tag operators as idempotent or non-idempotent
                 Key: APEXCORE-339
                 URL: https://issues.apache.org/jira/browse/APEXCORE-339
             Project: Apache Apex Core
          Issue Type: Bug
            Reporter: Pramod Immaneni
            Assignee: Pramod Immaneni


Certain application require idempotency and some others don't. Additionally operators such
as input operators need to be specially instrumented to exhibit idempotent behavior. Certain
output operators like database operators rely on idempotency. For these reasons we need ability
to label operators as idempotent or now, whether output operators require idempotency from
upstream operators or not. In case of a failure the platform should handle non-idempotent
streams by restarting the failed operator and all downsteram operators at the same checkpoint.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message