[
https://issues.apache.org/jira/browse/BEAM-6315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16738449#comment-16738449
]
Maximilian Michels commented on BEAM-6315:
------------------------------------------
Updated the description and title to clarify the scope of the issue.
> UnboundedSourceWrapper checkpoints before starting Readers
> ----------------------------------------------------------
>
> Key: BEAM-6315
> URL: https://issues.apache.org/jira/browse/BEAM-6315
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Reporter: Maximilian Michels
> Priority: Minor
>
> When start has not been called on the Readers of CountingSource, the
> checkpoint may contain a null value which lets the AvroCoder fail with a
> NullpointerException.
> UnboundedSourceWrapper should not attempt to checkpoint before the readers
> have been started:
> {quote}getCheckpointMark not be called before \{@link #start\} has been
> called.{quote}
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
