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https://issues.apache.org/jira/browse/NIFI-3216?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15830537#comment-15830537
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ASF subversion and git services commented on NIFI-3216:
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Commit 7f0171ffa25bfd8932e49b3367049b101799dea4 in nifi's branch
refs/heads/master from [~ijokarumawak]
[ https://git-wip-us.apache.org/repos/asf?p=nifi.git;h=7f0171f ]
NIFI-3216: Add N signals to Wait/Notify
- Support counters at Wait/Notify processors so that NiFi flow can be
configured to wait for N signals
- Extract Wait/Notify logics into WaitNotifyProtocol
- Added FragmentAttributes to manage commonly used fragment attributes
- Changed existing split processors to set 'fragment.identifier' and
'fragment.count', so that Wait can use those to wait for all splits
get processed
This closes #1420.
Signed-off-by: Bryan Bende <[email protected]>
> Add ability to wait for N signals to Wait/Notify processors
> -----------------------------------------------------------
>
> Key: NIFI-3216
> URL: https://issues.apache.org/jira/browse/NIFI-3216
> Project: Apache NiFi
> Issue Type: Improvement
> Affects Versions: 1.2.0
> Reporter: Bryan Bende
> Assignee: Koji Kawamura
> Fix For: 1.2.0
>
>
> The recently added Wait and Notify processors allow a flow file to be held at
> the Wait processor until a signal is received in the Notify processor. It
> would be nice to be able to wait for N signals before releasing.
> One way this could be done is to have a property like "Signal Count" on the
> Wait processor, and then count the keys in the cache starting with some
> pattern, and release when the # of keys equals the signal count.
> This would require the ability to get all the keys from the cache, or at
> least get all keys matching a pattern:
> https://issues.apache.org/jira/browse/NIFI-3214
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