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https://issues.apache.org/jira/browse/KAFKA-3794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15358238#comment-15358238
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ASF GitHub Bot commented on KAFKA-3794:
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GitHub user bbejeck opened a pull request:
https://github.com/apache/kafka/pull/1577
KAFKA-3794: added stream / table names as prefix to functions that pr…
…int to the console.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/bbejeck/kafka
KAFKA-3794-add-prefix-to-print-functions
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/1577.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1577
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commit f5334e134b0d6a743f24dcfd7d1d9cb6d92964c9
Author: bbejeck <bbej...@gmail.com>
Date: 2016-07-01T02:08:05Z
KAFKA-3794: added stream / table names as prefix to functions that print to
the console.
----
> Add Stream / Table prefix in print functions
> --------------------------------------------
>
> Key: KAFKA-3794
> URL: https://issues.apache.org/jira/browse/KAFKA-3794
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Reporter: Guozhang Wang
> Assignee: Bill Bejeck
> Labels: newbie, user-experience
>
> Currently the KTable/KStream.print() operator will print the key-value pair
> as it was forwarded to this operator. However, if there are multiple
> operators in the topologies with the same {{PrintStream}} (e.g. stdout),
> their printed key-value pairs will be interleaving on that stream channel.
> Hence it is better to add a prefix for different KStream/KTable.print
> operators. One proposal:
> 1) For KTable, it inherits a table name when created, and we can use that
> name as the prefix as {{[table-name]: key, value}}.
> 2) For KStream, we can overload the function with an additional "name"
> parameter that we use as the prefix; if it is not specified, then we can use
> the parent processor node name, which has the pattern like
> {{KSTREAM-JOIN-suffix_index}}.
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