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Posted to jira@kafka.apache.org by GitBox <gi...@apache.org> on 2021/07/08 20:38:26 UTC
[GitHub] [kafka] vvcephei commented on a change in pull request #11003: KAFKA-12360: Document new time semantics
vvcephei commented on a change in pull request #11003:
URL: https://github.com/apache/kafka/pull/11003#discussion_r666502523
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File path: docs/streams/developer-guide/config-streams.html
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@@ -241,8 +241,21 @@ <h4><a class="toc-backref" href="#id5">bootstrap.servers</a><a class="headerlink
</tr>
<tr class="row-even"><td>max.task.idle.ms</td>
<td>Medium</td>
- <td colspan="2">Maximum amount of time in milliseconds a stream task will stay idle while waiting for all partitions to contain data
- and avoid potential out-of-order record processing across multiple input streams.</td>
+ <td colspan="2">
+ <p>
+ This config controls whether joins and merges may produce out-of-order results.
+ The config value is the maximum amount of time in milliseconds a stream task will stay idle
+ when it is fully caught up on some (but not all) input partitions
+ to wait for producers to send additional records and avoid potential
+ out-of-order record processing across multiple input streams.
+ The default (zero) does not wait for producers to send more records,
+ but it does wait to fetch data that is already present on the brokers.
+ This default means that for records that are already present on the brokers,
+ Streams will process them in timestamp order.
+ The setting of -1 disables idling entirely and processes any locally available data,
Review comment:
Thanks!
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