beam-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Thomas Groh (JIRA)" <j...@apache.org>
Subject [jira] [Created] (BEAM-811) DoFnLifecycleManager may call teardown on a DoFn multiple times
Date Mon, 24 Oct 2016 20:54:58 GMT
Thomas Groh created BEAM-811:
--------------------------------

             Summary: DoFnLifecycleManager may call teardown on a DoFn multiple times
                 Key: BEAM-811
                 URL: https://issues.apache.org/jira/browse/BEAM-811
             Project: Beam
          Issue Type: Bug
          Components: runner-direct
            Reporter: Thomas Groh
            Assignee: Thomas Groh
             Fix For: 0.4.0-incubating


Because the iterator returned by ConcurrentMap.iterator() is weakly consistent, we may obtain
a DoFn that is simultaneously removed from the map while iterating in DoFnLifecycleManager#removeAll
and removed via the explicit remove call in DoFnLifecycleManger#remove

Instead, utilize the Cache#invalidate() method and an appropriate RemovalListener to ensure
that DoFn instances that are removed are torn down, and exceptions are appropriately reported.



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

Mime
View raw message