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https://issues.apache.org/jira/browse/KAFKA-3632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15336852#comment-15336852
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ASF GitHub Bot commented on KAFKA-3632:
---------------------------------------
GitHub user hachikuji opened a pull request:
https://github.com/apache/kafka/pull/1518
KAFKA-3632; remove fetcher metrics on shutdown and leader migration
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hachikuji/kafka port-kafka-3632-to-0.9
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/1518.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 #1518
----
commit a8edbed8220941e2df06c4f333262fe40d49bb9b
Author: Jason Gustafson <[email protected]>
Date: 2016-05-04T19:10:41Z
KAFKA-3632; remove fetcher metrics on shutdown and leader migration
Author: Jason Gustafson <[email protected]>
Reviewers: Ismael Juma <[email protected]>
Closes #1312 from hachikuji/KAFKA-3632
----
> ConsumerLag metrics persist after partition migration
> -----------------------------------------------------
>
> Key: KAFKA-3632
> URL: https://issues.apache.org/jira/browse/KAFKA-3632
> Project: Kafka
> Issue Type: Bug
> Components: core
> Affects Versions: 0.8.2.2, 0.9.0.1
> Environment: JDK 1.8, Linux
> Reporter: Brian Lueck
> Assignee: Jason Gustafson
> Priority: Minor
> Fix For: 0.10.0.0
>
>
> When a partition is migrated away from a broker, the ConsumerLag metric for
> the topic/partition gets 'stuck' at the current value. The only way to remove
> the metric is to restart the broker.
> This appears to be because in AbstractFetcherThread.scala there is no way of
> removing a metric. See...
> {code}
> class FetcherLagStats(metricId: ClientIdAndBroker) {
> private val valueFactory = (k: ClientIdTopicPartition) => new
> FetcherLagMetrics(k)
> val stats = new Pool[ClientIdTopicPartition,
> FetcherLagMetrics](Some(valueFactory))
> def getFetcherLagStats(topic: String, partitionId: Int): FetcherLagMetrics =
> {
> stats.getAndMaybePut(new ClientIdTopicPartition(metricId.clientId, topic,
> partitionId))
> }
> }
> {code}
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