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https://issues.apache.org/jira/browse/KAFKA-5341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16101975#comment-16101975
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ASF GitHub Bot commented on KAFKA-5341:
---------------------------------------
GitHub user lindong28 opened a pull request:
https://github.com/apache/kafka/pull/3583
KAFKA-5341; Add UnderMinIsrPartitionCount and per-partition UnderMinIsr
metrics (KIP-164)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/lindong28/kafka KAFKA-5341
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/3583.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 #3583
----
commit 93f541c249def6bdc158cb79592278d18cdf3ff8
Author: Dong Lin <lindon...@gmail.com>
Date: 2017-05-28T08:10:28Z
KAFKA-5341; Add UnderMinIsrPartitionCount and per-partition UnderMinIsr
metrics (KIP-164)
----
> Add UnderMinIsrPartitionCount and per-partition UnderMinIsr metrics
> -------------------------------------------------------------------
>
> Key: KAFKA-5341
> URL: https://issues.apache.org/jira/browse/KAFKA-5341
> Project: Kafka
> Issue Type: New Feature
> Reporter: Dong Lin
> Assignee: Dong Lin
>
> We currently have under replicated partitions, but we do not have a metric to
> track the number of partitions whose in-sync replicas count < minIsr.
> Partitions whose in-syn replicas count < minIsr will be unavailable to those
> producers who uses ack = all. It is important for Kafka operators to be
> notified of the existence of such partition because their existence reduces
> the availability of the Kafka service.
> More specifically, we can define a per-broker metric
> UnderMinIsrPartitionCount as "The number of partitions that this broker leads
> for which in-sync replicas count < minIsr." So if the RF was 3, and min ISR
> is 2, then when there are 2 replicas in ISR this partition would be in the
> under replicated partitions count. When there is 1 replica in ISR, this
> partition would also be in the UnderMinIsrPartitionCount.
> See
> https://cwiki.apache.org/confluence/display/KAFKA/KIP-164-+Add+UnderMinIsrPartitionCount+and+per-partition+UnderMinIsr+metrics
> for more detail.
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