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https://issues.apache.org/jira/browse/FLINK-6188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15994557#comment-15994557
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Aljoscha Krettek commented on FLINK-6188:
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Removing blocker status since FLINK-5808 was reverted.
> Some setParallelism() methods can't cope with default parallelism
> -----------------------------------------------------------------
>
> Key: FLINK-6188
> URL: https://issues.apache.org/jira/browse/FLINK-6188
> Project: Flink
> Issue Type: Bug
> Components: DataStream API
> Affects Versions: 1.3.0, 1.2.1
> Reporter: Aljoscha Krettek
> Assignee: Aljoscha Krettek
> Priority: Blocker
>
> Recent changes done for FLINK-5808 move default parallelism manifestation
> from eager to lazy, that is, the parallelism of operations that don't have an
> explicit parallelism is only set when generating the JobGraph. Some
> {{setParallelism()}} calls, such as
> {{SingleOutputStreamOperator.setParallelism()}} cannot deal with the fact
> that the parallelism of an operation might be {{-1}} (which indicates that it
> should take the default parallelism when generating the JobGraph).
> We should either revert the changes that fixed another user-facing bug for
> version 1.2.1 or fix the methods.
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