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https://issues.apache.org/jira/browse/KAFKA-4819?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15888916#comment-15888916
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ASF GitHub Bot commented on KAFKA-4819:
---------------------------------------
GitHub user fhussonnois opened a pull request:
https://github.com/apache/kafka/pull/2612
KAFKA-4819: Expose states for active tasks to public API
Simple implementation of the feature :
[KAFKA-4819](https://issues.apache.org/jira/browse/KAFKA-4819)
KAFKA-4819
This PR adds a new method `threadStates` to public API of `KafkaStreams`
which returns all currently states of running threads and active tasks.
Below is a example for a simple topology consuming from topics; test-p2 and
test-p4.
[{"name":"StreamThread-1","state":"RUNNING","activeTasks":[{"id":"0_0",
"assignments":["test-p4-0","test-p2-0"],
"consumedOffsetsByPartition":[{"topicPartition":"test-p2-0","offset":"test-p2-0"}]},
{"id":"0_2", "assignments":["test-p4-2"], "consumedOffsetsByPartition":[]}]},
{"name":"StreamThread-2","state":"RUNNING","activeTasks":[{"id":"0_1",
"assignments":["test-p4-1","test-p2-1"],
"consumedOffsetsByPartition":[{"topicPartition":"test-p2-1","offset":"test-p2-1"}]},
{"id":"0_3", "assignments":["test-p4-3"], "consumedOffsetsByPartition":[]}]}]
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/fhussonnois/kafka KAFKA-4819
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/2612.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 #2612
----
commit 0f8b8123cabdbfcfb44fe59b9be20e13ac253c95
Author: Florian Hussonnois <florian.hussonn...@gmail.com>
Date: 2017-02-23T22:08:01Z
KAFKA-4819: Expose states for active tasks to public API
----
> Expose states of active tasks to public API
> -------------------------------------------
>
> Key: KAFKA-4819
> URL: https://issues.apache.org/jira/browse/KAFKA-4819
> Project: Kafka
> Issue Type: New Feature
> Components: streams
> Affects Versions: 0.10.2.0
> Reporter: Florian Hussonnois
> Priority: Minor
>
> In Kafka 0.10.1.0 the toString method of KafkaStreams class has been
> implemented mainly to ease topologies debugging. Also, the streams Metrics
> has been exposed to public API.
> But currently theres is no way to monitor kstreams tasks states, assignments
> or consumed offsets.
> I propose to expose the states of active tasks to the public API KafkaStreams.
> For instance, an application can expose a REST API to get the global state of
> a kstreams topology.
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