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https://issues.apache.org/jira/browse/KAFKA-3062?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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xingang updated KAFKA-3062:
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Description:
Since Kafka require all the reading happen in the leader for the consistency.
If there could be possible for the reading can happen in replicas for a
eventually consistent, thus, for data of a Topic have a number of consumers,
among them, some consumers are Not latency-sensitive But Data-Loss sensitive
can fetch its data from replicas, in this case, it will pollute the Pagecache
for other consumers which are latency-sensitive
was:
Since Kafka require all the reading happens in the leader for the consistency.
If there could be possible for the reading can happens in replication, thus,
for data have a number of consumers, for the consumers Not latency-sensitive
But Data-Loss sensitive can fetch its data from replication, in this case, it
will pollute the Pagecache for other consumers which are latency-sensitive
> Read from kafka replication to get data likely Version based
> ------------------------------------------------------------
>
> Key: KAFKA-3062
> URL: https://issues.apache.org/jira/browse/KAFKA-3062
> Project: Kafka
> Issue Type: Improvement
> Reporter: xingang
>
> Since Kafka require all the reading happen in the leader for the consistency.
> If there could be possible for the reading can happen in replicas for a
> eventually consistent, thus, for data of a Topic have a number of consumers,
> among them, some consumers are Not latency-sensitive But Data-Loss sensitive
> can fetch its data from replicas, in this case, it will pollute the Pagecache
> for other consumers which are latency-sensitive
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